{"id":2501,"date":"2026-04-07T13:01:12","date_gmt":"2026-04-07T13:01:12","guid":{"rendered":"https:\/\/multahost.com\/blog\/?p=2501"},"modified":"2026-04-07T15:19:12","modified_gmt":"2026-04-07T15:19:12","slug":"vos3000-call-end-reasons","status":"publish","type":"post","link":"https:\/\/multahost.com\/blog\/vos3000-call-end-reasons\/","title":{"rendered":"VOS3000 Call End Reasons: Complete Error Code Reference Guide"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\" id=\"vos-3000-call-end-reasons-complete-error-code-reference-guide\">VOS3000 Call End Reasons: Complete Error Code Reference Guide<\/h1>\n\n\n\n<p><strong>VOS3000 call end reasons provide the definitive diagnostic information for understanding why VoIP calls fail, disconnect, or terminate abnormally.<\/strong> Every call processed through VOS3000 generates detailed termination data in the CDR (Call Detail Record) that identifies the exact reason for call completion. This comprehensive reference guide documents all server-side termination reasons, client error codes, SIP response mappings, and H.323 cause codes based on the official VOS3000 2.1.9.07 manual.<\/p>\n\n\n\n<p>\ud83d\udcde <strong>Need help diagnosing VOS3000 call failures?<\/strong> WhatsApp: <a href=\"https:\/\/wa.me\/8801911119966\" target=\"_blank\" rel=\"noreferrer noopener\">+8801911119966<\/a><\/p>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of Contents<\/h2><nav><ul><li><a href=\"#vos-3000-call-end-reasons-complete-error-code-reference-guide\">VOS3000 Call End Reasons: Complete Error Code Reference Guide<\/a><ul><li><a href=\"#\ud83d\udd0d-understanding-call-end-reasons-in-vos-3000\">\ud83d\udd0d Understanding VOS3000 Call End Reasons<\/a><ul><li><a href=\"#\ud83d\udcca-where-to-find-call-end-reasons\">\ud83d\udcca Where to Find VOS3000 Call End Reasons<\/a><\/li><\/ul><\/li><li><a href=\"#\ud83d\udccb-complete-vos-3000-server-side-termination-reasons\">\ud83d\udccb Complete VOS3000 Server-Side Termination Reasons<\/a><ul><li><a href=\"#\ud83d\udd34-account-related-termination-reasons\">\ud83d\udd34 Account-Related Termination Reasons<\/a><\/li><li><a href=\"#\ud83d\udd34-routing-related-termination-reasons\">\ud83d\udd34 Routing-Related Termination Reasons (VOS3000 Call End Reasons)<\/a><\/li><li><a href=\"#\ud83d\udd34-timeout-related-termination-reasons\">\ud83d\udd34 Timeout-Related Termination Reasons<\/a><\/li><li><a href=\"#\ud83d\udd34-number-restriction-termination-reasons\">\ud83d\udd34 Number Restriction Termination Reasons<\/a><\/li><li><a href=\"#\ud83d\udd34-forwarding-related-termination-reasons\">\ud83d\udd34 Forwarding-Related Termination Reasons<\/a><\/li><li><a href=\"#\ud83d\udd34-protocol-and-system-termination-reasons\">\ud83d\udd34 Protocol and System Termination Reasons<\/a><\/li><\/ul><\/li><li><a href=\"#\ud83d\udcde-sip-response-code-to-vos-3000-mapping\">\ud83d\udcde SIP Response Code to VOS3000 Mapping<\/a><ul><li><a href=\"#\ud83d\udcca-sip-4-xx-client-error-mapping\">\ud83d\udcca SIP 4xx Client Error Mapping<\/a><\/li><li><a href=\"#\ud83d\udcca-sip-5-xx-server-error-mapping\">\ud83d\udcca SIP 5xx Server Error Mapping<\/a><\/li><\/ul><\/li><li><a href=\"#\ud83d\udcde-h-323-cause-codes-complete-reference\">\ud83d\udcde H.323 Cause Codes Complete Reference<\/a><ul><li><a href=\"#\ud83d\udcca-h-323-q-931-cause-codes-table\">\ud83d\udcca H.323 Q.931 Cause Codes Table (VOS3000 Call End Reasons)<\/a><\/li><\/ul><\/li><li><a href=\"#\ud83d\udd27-cdr-analysis-and-diagnosis-flow\">\ud83d\udd27 CDR Analysis and Diagnosis Flow<\/a><ul><li><a href=\"#\ud83d\udd0d-vos-3000-call-end-reason-diagnosis-workflow\">\ud83d\udd0d VOS3000 Call End Reasons Diagnosis Workflow<\/a><\/li><\/ul><\/li><li><a href=\"#\ud83d\udcb0-vos-3000-support-services\">\ud83d\udcb0 VOS3000 Support Services<\/a><\/li><li><a href=\"#\ud83d\udd17-related-resources\">\ud83d\udd17 Related Resources (VOS3000 Call End Reasons)<\/a><\/li><li><a href=\"#\u2753-frequently-asked-questions\">\u2753 Frequently Asked Questions<\/a><ul><li><a href=\"#what-is-the-difference-between-response-timeout-and-connection-timeout\">What is the difference between &#8220;Response Timeout&#8221; and &#8220;Connection Timeout&#8221;?<\/a><\/li><li><a href=\"#why-do-i-see-different-error-codes-for-similar-failures\">Why do I see different error codes for similar failures?<\/a><\/li><li><a href=\"#how-can-i-filter-cdr-to-see-only-failed-calls\">How can I filter CDR to see only failed calls?<\/a><\/li><li><a href=\"#what-causes-codec-mismatch-errors\">What causes &#8220;Codec Mismatch&#8221; errors?<\/a><\/li><li><a href=\"#how-do-i-interpret-h-323-cause-codes-in-cdr\">How do I interpret H.323 cause codes in CDR?<\/a><\/li><\/ul><\/li><li><a href=\"#\ud83d\udcde-get-expert-vos-3000-troubleshooting-support\">\ud83d\udcde Get Expert VOS3000 Troubleshooting Support<\/a><\/li><li><a href=\"#\ud83d\udcde-need-call-center-setup-support\">\ud83d\udcde Need Professional VOS3000 Setup Support?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udd0d-understanding-call-end-reasons-in-vos-3000\">\ud83d\udd0d Understanding VOS3000 Call End Reasons<\/h2>\n\n\n\n<p>Reference: VOS3000 2.1.9.07 Manual, Section 4.5 (Pages 244-249)<\/p>\n\n\n\n<p>When a call terminates in VOS3000, the system records the termination reason in multiple CDR fields. Understanding these reasons is essential for maintaining call quality, optimizing routes, and troubleshooting recurring issues. The termination reason indicates whether the call ended normally, was rejected, timed out, or failed due to system configuration.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83d\udcca-where-to-find-call-end-reasons\">\ud83d\udcca Where to Find VOS3000 Call End Reasons<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udccd Location<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83e\udded Navigation Path<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udccb Information Available<\/th><\/tr><\/thead><tbody><tr><td><strong>Recent CDR<\/strong><\/td><td>Data Query \u2192 Recent CDR<\/td><td>Latest calls with termination reason column<\/td><\/tr><tr><td><strong>CDR Query<\/strong><\/td><td>Data Query \u2192 CDR<\/td><td>Historical CDR with advanced filtering<\/td><\/tr><tr><td><strong>Call Analysis<\/strong><\/td><td>Operation Management \u2192 Business Analysis<\/td><td>Detailed SIP\/H.323 signaling trace<\/td><\/tr><tr><td><strong>Debug Trace<\/strong><\/td><td>System \u2192 Debug trace<\/td><td>Real-time SIP message capture<\/td><\/tr><tr><td><strong>Database Direct<\/strong><\/td><td>MySQL vos3000_cdr table<\/td><td>Raw CDR data for custom analysis<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udccb-complete-vos-3000-server-side-termination-reasons\">\ud83d\udccb Complete VOS3000 Server-Side Termination Reasons<\/h2>\n\n\n\n<p>Reference: VOS3000 2.1.9.07 Manual, Section 4.5 (Pages 244-249)<\/p>\n\n\n\n<p>Server-side termination reasons are generated by VOS3000 when the softswitch itself terminates or rejects the call. These reasons provide the most detailed diagnostic information as they indicate the exact condition that prevented call completion. (VOS3000 Call End Reasons)<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83d\udd34-account-related-termination-reasons\">\ud83d\udd34 Account-Related Termination Reasons<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udea8 Termination Reason<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udccb Description<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udd0d Typical Cause<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u2705 Solution<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcd6 Page<\/th><\/tr><\/thead><tbody><tr><td><strong>Account Locked<\/strong><\/td><td>The account is currently locked\/disabled<\/td><td>Admin locked account, security trigger<\/td><td>Account Management \u2192 Change Status to Active<\/td><td>244<\/td><\/tr><tr><td><strong>Account Disabled<\/strong><\/td><td>Account status is disabled<\/td><td>Account deactivated by admin<\/td><td>Enable account in account management<\/td><td>244<\/td><\/tr><tr><td><strong>Account Expired<\/strong><\/td><td>Account validity period has ended<\/td><td>Expiry date passed<\/td><td>Extend expiry date (set to 2099-12-31)<\/td><td>244<\/td><\/tr><tr><td><strong>Insufficient Balance<\/strong><\/td><td>Account balance too low for call<\/td><td>Balance &lt; rate for destination<\/td><td>Add credit to account<\/td><td>244<\/td><\/tr><tr><td><strong>No Matching Account<\/strong><\/td><td>No account found to bill the call<\/td><td>Caller ID not mapped to account<\/td><td>Create account or fix caller ID mapping<\/td><td>245<\/td><\/tr><tr><td><strong>Account Not Online<\/strong><\/td><td>Called account not registered<\/td><td>Phone endpoint offline<\/td><td>Check phone registration status<\/td><td>245<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83d\udd34-routing-related-termination-reasons\">\ud83d\udd34 Routing-Related Termination Reasons (VOS3000 Call End Reasons)<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udea8 Termination Reason<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udccb Description<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udd0d Typical Cause<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u2705 Solution<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcd6 Page<\/th><\/tr><\/thead><tbody><tr><td><strong>NoAvailableRouter<\/strong><\/td><td>No routing gateway available<\/td><td>No gateway configured for destination<\/td><td>Add routing gateway with correct prefix<\/td><td>245<\/td><\/tr><tr><td><strong>Not Found<\/strong><\/td><td>Destination number not found<\/td><td>Prefix mismatch in gateway<\/td><td>Check gateway prefix configuration<\/td><td>245<\/td><\/tr><tr><td><strong>No Matching Rate<\/strong><\/td><td>No rate found for destination<\/td><td>Rate table missing prefix<\/td><td>Add rate entry for destination prefix<\/td><td>245<\/td><\/tr><tr><td><strong>The Called Not Online<\/strong><\/td><td>Called device not reachable<\/td><td>Gateway offline or no capacity<\/td><td>Check gateway status and capacity<\/td><td>245<\/td><\/tr><tr><td><strong>Connection Limit Exceeded<\/strong><\/td><td>Maximum concurrent calls reached<\/td><td>Line limit reached on account\/gateway<\/td><td>Increase line limit or add capacity<\/td><td>246<\/td><\/tr><tr><td><strong>Unregistered<\/strong><\/td><td>Endpoint not registered<\/td><td>Registration expired or failed<\/td><td>Verify device registration settings<\/td><td>246<\/td><\/tr><tr><td><strong>Rate Table Not Found<\/strong><\/td><td>No rate table assigned<\/td><td>Account missing rate table<\/td><td>Assign rate table to account<\/td><td>246<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83d\udd34-timeout-related-termination-reasons\">\ud83d\udd34 Timeout-Related Termination Reasons<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udea8 Termination Reason<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udccb Description<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u2699\ufe0f Related Parameter<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u2705 Solution<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcd6 Page<\/th><\/tr><\/thead><tbody><tr><td><strong>Response Timeout<\/strong><\/td><td>No answer from called party<\/td><td>SS_TIMEOUT_PHONE_HANGUP<\/td><td>Increase alerting timeout, check endpoint<\/td><td>246<\/td><\/tr><tr><td><strong>Connection Timeout<\/strong><\/td><td>No SIP response after retries<\/td><td>SS_SIP_SEND_RETRY, SS_SIP_RESEND_INTERVAL<\/td><td>Check network, firewall, gateway status<\/td><td>246<\/td><\/tr><tr><td><strong>Proceeding Timeout<\/strong><\/td><td>No 100 Trying progress<\/td><td>Gateway proceeding timeout<\/td><td>Check gateway connectivity<\/td><td>247<\/td><\/tr><tr><td><strong>Session Timeout<\/strong><\/td><td>Session timer refresh failed<\/td><td>SS_SIP_SESSION_TTL<\/td><td>Check session timer config, NAT keep-alive<\/td><td>247<\/td><\/tr><tr><td><strong>Connection Establishment Timeout<\/strong><\/td><td>Call setup incomplete<\/td><td>Mapping gateway timeout<\/td><td>Check gateway response time<\/td><td>247<\/td><\/tr><tr><td><strong>Alerting Timeout<\/strong><\/td><td>Ring timeout exceeded<\/td><td>Gateway alerting timer<\/td><td>Increase ring timeout in gateway config<\/td><td>247<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83d\udd34-number-restriction-termination-reasons\">\ud83d\udd34 Number Restriction Termination Reasons<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udea8 Termination Reason<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udccb Description<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udd0d Trigger<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u2705 Solution<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcd6 Page<\/th><\/tr><\/thead><tbody><tr><td><strong>Caller&#8217;s Number Restricted<\/strong><\/td><td>Caller ID length exceeds limit<\/td><td>SS_CALLERALLOWLENGTH exceeded<\/td><td>Adjust caller length parameter<\/td><td>247<\/td><\/tr><tr><td><strong>Called Number Restricted<\/strong><\/td><td>Callee number too long<\/td><td>Number length limit<\/td><td>Adjust called number length settings<\/td><td>247<\/td><\/tr><tr><td><strong>Caller&#8217;s Number Prefix Restricted<\/strong><\/td><td>Caller prefix not allowed<\/td><td>Gateway prefix filter<\/td><td>Update allowed prefixes in gateway<\/td><td>248<\/td><\/tr><tr><td><strong>Called Number Prefix Restricted<\/strong><\/td><td>Destination prefix blocked<\/td><td>Gateway prefix restriction<\/td><td>Check gateway prefix settings<\/td><td>248<\/td><\/tr><tr><td><strong>Call Restriction<\/strong><\/td><td>Call blocked by policy<\/td><td>Account authorization settings<\/td><td>Update account call authorization<\/td><td>248<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83d\udd34-forwarding-related-termination-reasons\">\ud83d\udd34 Forwarding-Related Termination Reasons<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udea8 Termination Reason<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udccb Description<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u2699\ufe0f Configuration<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcd6 Page<\/th><\/tr><\/thead><tbody><tr><td><strong>No-Answer Forwarding by Caller<\/strong><\/td><td>Caller has no-answer forwarding<\/td><td>Phone Management \u2192 Call Forwarding<\/td><td>248<\/td><\/tr><tr><td><strong>No-Answer Forwarding by Called<\/strong><\/td><td>Called has no-answer forwarding<\/td><td>Called phone forwarding settings<\/td><td>248<\/td><\/tr><tr><td><strong>Timed Forwarding<\/strong><\/td><td>Time-based forwarding active<\/td><td>Time period forwarding config<\/td><td>248<\/td><\/tr><tr><td><strong>On-Busy Forwarding<\/strong><\/td><td>Called busy, forwarded<\/td><td>Busy forwarding config<\/td><td>248<\/td><\/tr><tr><td><strong>Call Forwarding by Called<\/strong><\/td><td>Unconditional forwarding<\/td><td>Forwarding unconditional setting<\/td><td>249<\/td><\/tr><tr><td><strong>Forwarding Loop<\/strong><\/td><td>Infinite forwarding loop<\/td><td>Forwarding chain creates loop<\/td><td>249<\/td><\/tr><tr><td><strong>Do-Not-Disturb from Called<\/strong><\/td><td>Called has DND enabled<\/td><td>DND setting on phone<\/td><td>249<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83d\udd34-protocol-and-system-termination-reasons\">\ud83d\udd34 Protocol and System Termination Reasons<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udea8 Termination Reason<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udccb Description<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udca1 Notes<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcd6 Page<\/th><\/tr><\/thead><tbody><tr><td><strong>Protocol Limit<\/strong><\/td><td>Server cannot process protocol<\/td><td>Check protocol compatibility<\/td><td>249<\/td><\/tr><tr><td><strong>Busy<\/strong><\/td><td>Called number is busy<\/td><td>Normal termination<\/td><td>249<\/td><\/tr><tr><td><strong>Forcible Hang-Up<\/strong><\/td><td>Server terminated session<\/td><td>Admin action or system limit<\/td><td>249<\/td><\/tr><tr><td><strong>Hang-Up by Caller<\/strong><\/td><td>Caller ended normally<\/td><td>Normal termination<\/td><td>249<\/td><\/tr><tr><td><strong>Hang-Up by Called<\/strong><\/td><td>Called party ended call<\/td><td>Normal termination<\/td><td>249<\/td><\/tr><tr><td><strong>Session Closed by Called<\/strong><\/td><td>TCP closed without BYE<\/td><td>Network\/endpoint issue<\/td><td>249<\/td><\/tr><tr><td><strong>Session Closed by Caller<\/strong><\/td><td>Caller TCP closed<\/td><td>Check caller network<\/td><td>249<\/td><\/tr><tr><td><strong>Codec Mismatch<\/strong><\/td><td>No common codec<\/td><td>Enable transcoding<\/td><td>249<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcde-sip-response-code-to-vos-3000-mapping\">\ud83d\udcde SIP Response Code to VOS3000 Mapping<\/h2>\n\n\n\n<p>Reference: VOS3000 2.1.9.07 Manual, Section 4.5.2 (Page 247-248)<\/p>\n\n\n\n<p>When SIP responses are received from endpoints or gateways, VOS3000 maps these standard SIP codes to internal termination reasons. Understanding this mapping helps correlate SIP traces with CDR data. (VOS3000 Call End Reasons)<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83d\udcca-sip-4-xx-client-error-mapping\">\ud83d\udcca SIP 4xx Client Error Mapping<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcde SIP Code<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udccb SIP Name<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udd04 VOS3000 Mapping<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u26a1 Typical Cause<\/th><\/tr><\/thead><tbody><tr><td><strong>400<\/strong><\/td><td>Bad Request<\/td><td>Protocol Error<\/td><td>Malformed SIP message<\/td><\/tr><tr><td><strong>401<\/strong><\/td><td>Unauthorized<\/td><td>Auth Failed<\/td><td>Invalid credentials<\/td><\/tr><tr><td><strong>403<\/strong><\/td><td>Forbidden<\/td><td>Account Locked \/ IP Blocked<\/td><td>Access denied by policy<\/td><\/tr><tr><td><strong>404<\/strong><\/td><td>Not Found<\/td><td>Not Found<\/td><td>User\/destination unknown<\/td><\/tr><tr><td><strong>405<\/strong><\/td><td>Method Not Allowed<\/td><td>Protocol Limit<\/td><td>SIP method rejected<\/td><\/tr><tr><td><strong>406<\/strong><\/td><td>Not Acceptable<\/td><td>Codec Mismatch<\/td><td>SDP negotiation failed<\/td><\/tr><tr><td><strong>407<\/strong><\/td><td>Proxy Auth Required<\/td><td>Auth Failed<\/td><td>Proxy authentication needed<\/td><\/tr><tr><td><strong>408<\/strong><\/td><td>Request Timeout<\/td><td>Response Timeout<\/td><td>No SIP response received<\/td><\/tr><tr><td><strong>415<\/strong><\/td><td>Unsupported Media<\/td><td>Codec Mismatch<\/td><td>Media format rejected<\/td><\/tr><tr><td><strong>422<\/strong><\/td><td>Session Interval Too Small<\/td><td>Session Timer Error<\/td><td>Session timer too short<\/td><\/tr><tr><td><strong>480<\/strong><\/td><td>Temporarily Unavailable<\/td><td>Unregistered \/ Not Online<\/td><td>Endpoint unavailable<\/td><\/tr><tr><td><strong>484<\/strong><\/td><td>Address Incomplete<\/td><td>Number Restricted<\/td><td>Incomplete number<\/td><\/tr><tr><td><strong>486<\/strong><\/td><td>Busy Here<\/td><td>Busy<\/td><td>User busy<\/td><\/tr><tr><td><strong>487<\/strong><\/td><td>Request Terminated<\/td><td>Cancelled<\/td><td>Call cancelled<\/td><\/tr><tr><td><strong>488<\/strong><\/td><td>Not Acceptable Here<\/td><td>Codec Mismatch<\/td><td>SDP negotiation failed<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83d\udcca-sip-5-xx-server-error-mapping\">\ud83d\udcca SIP 5xx Server Error Mapping<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcde SIP Code<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udccb SIP Name<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udd04 VOS3000 Mapping<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u26a1 Typical Cause<\/th><\/tr><\/thead><tbody><tr><td><strong>500<\/strong><\/td><td>Server Internal Error<\/td><td>Protocol Error<\/td><td>Remote server error<\/td><\/tr><tr><td><strong>502<\/strong><\/td><td>Bad Gateway<\/td><td>Gateway Error<\/td><td>Invalid response from upstream<\/td><\/tr><tr><td><strong>503<\/strong><\/td><td>Service Unavailable<\/td><td>NoAvailableRouter<\/td><td>Server overloaded\/maintenance<\/td><\/tr><tr><td><strong>504<\/strong><\/td><td>Server Time-out<\/td><td>Connection Timeout<\/td><td>No response from upstream<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcde-h-323-cause-codes-complete-reference\">\ud83d\udcde H.323 Cause Codes Complete Reference<\/h2>\n\n\n\n<p>Reference: VOS3000 2.1.9.07 Manual, Section 4.5.3 (Page 248-249)<\/p>\n\n\n\n<p>For H.323 protocol calls, VOS3000 uses ITU-T Q.931 cause codes. These standard cause codes provide detailed information about call failures in traditional telephony and H.323-based VoIP systems.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83d\udcca-h-323-q-931-cause-codes-table\">\ud83d\udcca H.323 Q.931 Cause Codes Table (VOS3000 Call End Reasons)<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udd22 Code<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udccb Name<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcdd Meaning<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udd04 VOS3000 Action<\/th><\/tr><\/thead><tbody><tr><td><strong>1<\/strong><\/td><td>Unallocated Number<\/td><td>Number not assigned to any destination<\/td><td>Record as Not Found<\/td><\/tr><tr><td><strong>2<\/strong><\/td><td>No Route to Transit Net<\/td><td>No route through transit network<\/td><td>Record as NoAvailableRouter<\/td><\/tr><tr><td><strong>3<\/strong><\/td><td>No Route to Destination<\/td><td>No route to called number<\/td><td>Record as NoAvailableRouter<\/td><\/tr><tr><td><strong>6<\/strong><\/td><td>Channel Unacceptable<\/td><td>Channel not acceptable for call<\/td><td>Record as Connection Limit<\/td><\/tr><tr><td><strong>7<\/strong><\/td><td>Call Awarded<\/td><td>Call awarded, delivered to endpoint<\/td><td>Normal call handling<\/td><\/tr><tr><td><strong>8<\/strong><\/td><td>Preemption<\/td><td>Call preempted by higher priority<\/td><td>Record as Forcible Hang-Up<\/td><\/tr><tr><td><strong>16<\/strong><\/td><td>Normal Call Clearing<\/td><td>Call cleared normally<\/td><td>Record as Hang-Up by Caller\/Called<\/td><\/tr><tr><td><strong>17<\/strong><\/td><td>User Busy<\/td><td>User is busy<\/td><td>Record as Busy<\/td><\/tr><tr><td><strong>18<\/strong><\/td><td>No User Responding<\/td><td>No response from user<\/td><td>Record as Response Timeout<\/td><\/tr><tr><td><strong>19<\/strong><\/td><td>No Answer from User<\/td><td>User alerted but no answer<\/td><td>Record as Response Timeout<\/td><\/tr><tr><td><strong>20<\/strong><\/td><td>Subscriber Absent<\/td><td>Subscriber not available<\/td><td>Record as Unregistered<\/td><\/tr><tr><td><strong>21<\/strong><\/td><td>Call Rejected<\/td><td>Call was rejected<\/td><td>Record as call rejection<\/td><\/tr><tr><td><strong>22<\/strong><\/td><td>Number Changed<\/td><td>Number has been changed<\/td><td>Record as Not Found<\/td><\/tr><tr><td><strong>26<\/strong><\/td><td>Non-Selected User Clearing<\/td><td>User not selected for call<\/td><td>Normal termination<\/td><\/tr><tr><td><strong>27<\/strong><\/td><td>Destination Out of Order<\/td><td>Destination cannot be reached<\/td><td>Record as Gateway Error<\/td><\/tr><tr><td><strong>28<\/strong><\/td><td>Invalid Number Format<\/td><td>Number format invalid<\/td><td>Record as Number Restricted<\/td><\/tr><tr><td><strong>29<\/strong><\/td><td>Facility Rejected<\/td><td>Facility rejected<\/td><td>Record as Protocol Error<\/td><\/tr><tr><td><strong>30<\/strong><\/td><td>Response to STATUS ENQUIRY<\/td><td>Response to status inquiry<\/td><td>Status response<\/td><\/tr><tr><td><strong>31<\/strong><\/td><td>Normal, Unspecified<\/td><td>Normal event, no specific cause<\/td><td>Normal termination<\/td><\/tr><tr><td><strong>34<\/strong><\/td><td>No Circuit Available<\/td><td>No channel available<\/td><td>Record as Connection Limit<\/td><\/tr><tr><td><strong>38<\/strong><\/td><td>Network Out of Order<\/td><td>Network not functioning<\/td><td>Record as Gateway Error<\/td><\/tr><tr><td><strong>41<\/strong><\/td><td>Temporary Failure<\/td><td>Temporary network problem<\/td><td>Record as temporary error<\/td><\/tr><tr><td><strong>42<\/strong><\/td><td>Switch Congestion<\/td><td>Network congestion<\/td><td>Record as Connection Limit<\/td><\/tr><tr><td><strong>44<\/strong><\/td><td>Requested Circuit Not Available<\/td><td>Requested circuit unavailable<\/td><td>Record as Connection Limit<\/td><\/tr><tr><td><strong>47<\/strong><\/td><td>Resource Unavailable<\/td><td>Insufficient resources<\/td><td>Record as Connection Limit<\/td><\/tr><tr><td><strong>49<\/strong><\/td><td>QoS Not Available<\/td><td>Requested QoS not available<\/td><td>Record as Protocol Error<\/td><\/tr><tr><td><strong>50<\/strong><\/td><td>Requested Facility Not Subscribed<\/td><td>Facility not subscribed<\/td><td>Record as Call Restriction<\/td><\/tr><tr><td><strong>52<\/strong><\/td><td>Outgoing Call Barred<\/td><td>Outgoing calls barred<\/td><td>Record as Call Restriction<\/td><\/tr><tr><td><strong>54<\/strong><\/td><td>Incoming Call Barred<\/td><td>Incoming calls barred<\/td><td>Record as Call Restriction<\/td><\/tr><tr><td><strong>57<\/strong><\/td><td>Bearer Capability Not Authorized<\/td><td>Capability not authorized<\/td><td>Record as Account Locked<\/td><\/tr><tr><td><strong>58<\/strong><\/td><td>Bearer Capability Not Available<\/td><td>Capability not available<\/td><td>Record as Codec Mismatch<\/td><\/tr><tr><td><strong>63<\/strong><\/td><td>Service Not Available<\/td><td>Service not available<\/td><td>Record as NoAvailableRouter<\/td><\/tr><tr><td><strong>65<\/strong><\/td><td>Bearer Capability Not Implemented<\/td><td>Capability not implemented<\/td><td>Record as Codec Mismatch<\/td><\/tr><tr><td><strong>69<\/strong><\/td><td>Requested Facility Not Implemented<\/td><td>Facility not implemented<\/td><td>Record as Protocol Limit<\/td><\/tr><tr><td><strong>70<\/strong><\/td><td>Only Restricted Digital Bearer<\/td><td>Only restricted digital available<\/td><td>Record as Codec Mismatch<\/td><\/tr><tr><td><strong>79<\/strong><\/td><td>Service Not Implemented<\/td><td>Service not implemented<\/td><td>Record as Protocol Limit<\/td><\/tr><tr><td><strong>81<\/strong><\/td><td>Invalid Call Reference<\/td><td>Call reference invalid<\/td><td>Record as Protocol Error<\/td><\/tr><tr><td><strong>88<\/strong><\/td><td>Incompatible Destination<\/td><td>Destination incompatible<\/td><td>Record as Codec Mismatch<\/td><\/tr><tr><td><strong>95<\/strong><\/td><td>Invalid Message<\/td><td>Message invalid<\/td><td>Record as Protocol Error<\/td><\/tr><tr><td><strong>96<\/strong><\/td><td>Mandatory IE Missing<\/td><td>Mandatory element missing<\/td><td>Record as Protocol Error<\/td><\/tr><tr><td><strong>97<\/strong><\/td><td>Message Not Implemented<\/td><td>Message type not implemented<\/td><td>Record as Protocol Limit<\/td><\/tr><tr><td><strong>98<\/strong><\/td><td>IE Not Implemented<\/td><td>Information element not implemented<\/td><td>Record as Protocol Limit<\/td><\/tr><tr><td><strong>99<\/strong><\/td><td>Invalid IE Contents<\/td><td>Information element invalid<\/td><td>Record as Protocol Error<\/td><\/tr><tr><td><strong>100<\/strong><\/td><td>Invalid Message for State<\/td><td>Message invalid for call state<\/td><td>Record as Protocol Error<\/td><\/tr><tr><td><strong>101<\/strong><\/td><td>Recovery on Timer Expiry<\/td><td>Timer expired<\/td><td>Record as Response Timeout<\/td><\/tr><tr><td><strong>102<\/strong><\/td><td>Protocol Error<\/td><td>Protocol error unspecified<\/td><td>Record as Protocol Error<\/td><\/tr><tr><td><strong>111<\/strong><\/td><td>Protocol Error, Unspecified<\/td><td>Unspecified protocol error<\/td><td>Record as Protocol Error<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udd27-cdr-analysis-and-diagnosis-flow\">\ud83d\udd27 CDR Analysis and Diagnosis Flow<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83d\udd0d-vos-3000-call-end-reason-diagnosis-workflow\">\ud83d\udd0d VOS3000 Call End Reasons Diagnosis Workflow<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\">STEP 1: IDENTIFY THE PROBLEM\n\u251c\u2500\u2500 Open CDR Query (Data Query \u2192 CDR)\n\u251c\u2500\u2500 Filter by time period, account, or gateway\n\u251c\u2500\u2500 Look at \"Termination Reason\" column\n\u2514\u2500\u2500 Note patterns: same error repeatedly?\n\nSTEP 2: CLASSIFY ERROR TYPE\n\u251c\u2500\u2500 Account Issue?\n\u2502   \u251c\u2500\u2500 Account Locked \u2192 Account Management\n\u2502   \u251c\u2500\u2500 Insufficient Balance \u2192 Balance Management\n\u2502   \u2514\u2500\u2500 Account Expired \u2192 Extend Expiry Date\n\u2502\n\u251c\u2500\u2500 Routing Issue?\n\u2502   \u251c\u2500\u2500 NoAvailableRouter \u2192 Add Gateway\n\u2502   \u251c\u2500\u2500 Not Found \u2192 Check Prefix Config\n\u2502   \u2514\u2500\u2500 No Matching Rate \u2192 Add Rate Entry\n\u2502\n\u251c\u2500\u2500 Network Issue?\n\u2502   \u251c\u2500\u2500 Connection Timeout \u2192 Firewall\/Connectivity\n\u2502   \u251c\u2500\u2500 Response Timeout \u2192 Gateway Response\n\u2502   \u2514\u2500\u2500 Session Timeout \u2192 NAT\/Session Timer\n\u2502\n\u2514\u2500\u2500 Protocol Issue?\n    \u251c\u2500\u2500 Codec Mismatch \u2192 Enable Transcoding\n    \u251c\u2500\u2500 Protocol Limit \u2192 Check Compatibility\n    \u2514\u2500\u2500 Protocol Error \u2192 Debug Trace Analysis\n\nSTEP 3: ANALYZE CALL TRACE\n\u251c\u2500\u2500 Find problematic call in CDR\n\u251c\u2500\u2500 Right-click \u2192 Call Analysis\n\u251c\u2500\u2500 Review SIP\/H.323 message sequence\n\u2514\u2500\u2500 Identify exact point of failure\n\nSTEP 4: IMPLEMENT SOLUTION\n\u251c\u2500\u2500 Apply fix based on diagnosis\n\u251c\u2500\u2500 Document changes made\n\u251c\u2500\u2500 Test with sample calls\n\u2514\u2500\u2500 Verify in CDR that issue resolved\n\nSTEP 5: MONITOR\n\u251c\u2500\u2500 Check ASR improvement\n\u251c\u2500\u2500 Monitor for recurrence\n\u2514\u2500\u2500 Adjust configuration as needed\n<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcb0-vos-3000-support-services\">\ud83d\udcb0 VOS3000 Support Services<\/h2>\n\n\n\n<p><strong>Need professional assistance with VOS3000 call failure diagnosis?<\/strong> Our team provides comprehensive VOS3000 support including CDR analysis, error code troubleshooting, and system optimization.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udce6 Service<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcdd Description<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcbc Scope<\/th><\/tr><\/thead><tbody><tr><td><strong>CDR Analysis<\/strong><\/td><td>Deep dive into call failure patterns<\/td><td>Error patterns, ASR\/ACD analysis<\/td><\/tr><tr><td><strong>Configuration Audit<\/strong><\/td><td>Review VOS3000 settings<\/td><td>Parameters, gateway, routing<\/td><\/tr><tr><td><strong>Technical Support<\/strong><\/td><td>24\/7 remote assistance<\/td><td>Troubleshooting, optimization<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\ud83d\udcde <strong>Contact us for VOS3000:<\/strong> WhatsApp: <a href=\"https:\/\/wa.me\/8801911119966\" target=\"_blank\" rel=\"noreferrer noopener\">+8801911119966<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udd17-related-resources\">\ud83d\udd17 Related Resources (VOS3000 Call End Reasons)<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udcd6 <a href=\"https:\/\/www.vos3000.com\/blog\/vos3000-sip-call-flow\/\" target=\"_blank\" rel=\"noreferrer noopener\">VOS3000 SIP Call Flow Complete Guide<\/a><\/li>\n\n\n\n<li>\ud83d\udcd6 <a href=\"https:\/\/www.vos3000.com\/blog\/vos3000-asr-acd-analysis\/\" target=\"_blank\" rel=\"noreferrer noopener\">VOS3000 ASR ACD Analysis<\/a><\/li>\n\n\n\n<li>\ud83d\udcd6 <a href=\"https:\/\/www.vos3000.com\/blog\/vos3000-gateway-analysis-reports\/\" target=\"_blank\" rel=\"noreferrer noopener\">VOS3000 Gateway Analysis Reports<\/a><\/li>\n\n\n\n<li>\ud83d\udcd6 <a href=\"https:\/\/www.vos3000.com\/blog\/vos3000-account-management\/\" target=\"_blank\" rel=\"noreferrer noopener\">VOS3000 Account Management<\/a><\/li>\n\n\n\n<li>\ud83d\udce5 <a href=\"https:\/\/vos3000.com\/downloads.php\" target=\"_blank\" rel=\"noreferrer noopener\">VOS3000 Downloads &#8211; Manual and Software<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u2753-frequently-asked-questions\">\u2753 Frequently Asked Questions<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"what-is-the-difference-between-response-timeout-and-connection-timeout\">What is the difference between &#8220;Response Timeout&#8221; and &#8220;Connection Timeout&#8221;?<\/h3>\n\n\n\n<p>Response Timeout occurs when the called party does not answer within the configured alerting time (phone rings but nobody picks up). Connection Timeout occurs when VOS3000 sends SIP INVITE but receives no SIP response at all after multiple retries, typically indicating network connectivity issues, firewall blocks, or the gateway being offline.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"why-do-i-see-different-error-codes-for-similar-failures\">Why do I see different error codes for similar failures?<\/h3>\n\n\n\n<p>VOS3000 records different termination reasons based on the exact point of failure and the protocol used. A SIP 404 Not Found from a gateway produces &#8220;Not Found&#8221; while a routing table miss produces &#8220;NoAvailableRouter&#8221;. The distinction helps pinpoint whether the issue is with routing configuration or the remote endpoint&#8217;s response.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"how-can-i-filter-cdr-to-see-only-failed-calls\">How can I filter CDR to see only failed calls?<\/h3>\n\n\n\n<p>In CDR Query, you can filter by Session Time = 0 to see calls that never connected, or create custom queries against the database to filter by specific termination reasons. The vos3000_cdr MySQL table contains all termination information for advanced analysis.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"what-causes-codec-mismatch-errors\">What causes &#8220;Codec Mismatch&#8221; errors?<\/h3>\n\n\n\n<p>Codec Mismatch occurs when the caller and callee have no common audio codec. This typically happens when one side only supports G.711 (alaw\/ulaw) and the other only supports G.729 without transcoding enabled. Enable transcoding in VOS3000 or configure compatible codecs on both endpoints.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"how-do-i-interpret-h-323-cause-codes-in-cdr\">How do I interpret H.323 cause codes in CDR?<\/h3>\n\n\n\n<p>H.323 cause codes follow ITU-T Q.931 standard. Common codes include 16 (normal call clearing), 17 (user busy), 18 (no response), 21 (call rejected), and 34 (no circuit available). Use the complete cause code table in this guide to interpret specific values in your CDR.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcde-get-expert-vos-3000-troubleshooting-support\">\ud83d\udcde Get Expert VOS3000 Troubleshooting Support<\/h2>\n\n\n\n<p>Need help diagnosing VOS3000 call failures or understanding error codes? Our VOS3000 experts provide comprehensive support for CDR analysis, error code interpretation, and system optimization.<\/p>\n\n\n\n<p><strong>\ud83d\udcf1 WhatsApp: <a href=\"https:\/\/wa.me\/8801911119966\" target=\"_blank\" rel=\"noreferrer noopener\">+8801911119966<\/a><\/strong><\/p>\n\n\n\n<p>Contact us today for professional VOS3000 installation, configuration, and technical support services!<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcde-need-call-center-setup-support\">\ud83d\udcde Need Professional VOS3000 Setup Support?<\/h2>\n\n\n\n<p>For professional VOS3000 installations and deployment, VOS3000 Server Rental Solution:<\/p>\n\n\n\n<p>\ud83d\udcf1 <strong>WhatsApp:<\/strong> <a href=\"https:\/\/wa.me\/8801911119966\" target=\"_blank\" rel=\"noopener\">+8801911119966<\/a><br>\ud83c\udf10 <strong>Website:<\/strong> <a href=\"https:\/\/www.vos3000.com\" target=\"_blank\" rel=\"noopener\">www.vos3000.com<\/a><br>\ud83c\udf10 <strong>Blog:<\/strong> <a href=\"https:\/\/multahost.com\/blog\">multahost.com\/blog<\/a><br>\ud83d\udce5 <strong>Downloads:<\/strong> <a href=\"https:\/\/www.vos3000.com\/downloads.php\" target=\"_blank\" rel=\"noopener\">VOS3000 Downloads<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><img data-recalc-dims=\"1\" height=\"540\" width=\"809\" decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" alt=\"Negocio VoIP Mayorista, VICIDIAL Servidor, Softswitch Barato, VoIP\u6279\u53d1\u4e1a\u52a1, \u8f6f\u4ea4\u6362\u6bd4\u8f83, VOS3000 session timer, VOS3000 call end reasons, VOS3000 Work Calendar, VOS3000 geofencing, VOS3000\u8f6f\u4ea4\u6362\u53c2\u6570\u4f18\u5316, VOS3000\u9519\u8bef\u4ee3\u7801\u5927\u5168, VOS3000\u8d26\u6237\u6743\u9650\u7ba1\u7406\" title=\"\" class=\"lazyload\" data-src=\"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/Negocio-VoIP-Mayorista-VICIDIAL-Servidor-Softswitch-Barato-VoIP%E6%89%B9%E5%8F%91%E4%B8%9A%E5%8A%A1-%E8%BD%AF%E4%BA%A4%E6%8D%A2%E6%AF%94%E8%BE%83-1024x683.png?resize=809%2C540&#038;ssl=1\"><\/td><td><img data-recalc-dims=\"1\" height=\"540\" width=\"809\" decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" alt=\"Negocio VoIP Mayorista, VICIDIAL Servidor, Softswitch Barato, VoIP\u6279\u53d1\u4e1a\u52a1, \u8f6f\u4ea4\u6362\u6bd4\u8f83, VOS3000 session timer, VOS3000 call end reasons, VOS3000 Work Calendar, VOS3000 geofencing, VOS3000\u8f6f\u4ea4\u6362\u53c2\u6570\u4f18\u5316, VOS3000\u9519\u8bef\u4ee3\u7801\u5927\u5168, VOS3000\u8d26\u6237\u6743\u9650\u7ba1\u7406\" title=\"\" class=\"lazyload\" data-src=\"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/Negocio-VoIP-Mayorista-VICIDIAL-Servidor-Softswitch-Barato-VoIP%E6%89%B9%E5%8F%91%E4%B8%9A%E5%8A%A1-%E8%BD%AF%E4%BA%A4%E6%8D%A2%E6%AF%94%E8%BE%83-1024x683.png?resize=809%2C540&#038;ssl=1\"><\/td><td><img data-recalc-dims=\"1\" height=\"540\" width=\"809\" decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" alt=\"Negocio VoIP Mayorista, VICIDIAL Servidor, Softswitch Barato, VoIP\u6279\u53d1\u4e1a\u52a1, \u8f6f\u4ea4\u6362\u6bd4\u8f83, VOS3000 session timer, VOS3000 call end reasons, VOS3000 Work Calendar, VOS3000 geofencing, VOS3000\u8f6f\u4ea4\u6362\u53c2\u6570\u4f18\u5316, VOS3000\u9519\u8bef\u4ee3\u7801\u5927\u5168, VOS3000\u8d26\u6237\u6743\u9650\u7ba1\u7406\" title=\"\" class=\"lazyload\" data-src=\"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/Negocio-VoIP-Mayorista-VICIDIAL-Servidor-Softswitch-Barato-VoIP%E6%89%B9%E5%8F%91%E4%B8%9A%E5%8A%A1-%E8%BD%AF%E4%BA%A4%E6%8D%A2%E6%AF%94%E8%BE%83-1024x683.png?resize=809%2C540&#038;ssl=1\"><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>VOS3000 call end reasons complete reference with all error codes, SIP mapping, H.323 cause codes, CDR analysis, and troubleshooting from official manual pages.<\/p>\n","protected":false},"author":1,"featured_media":2498,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[2,712],"tags":[5627,5214,5629,5630,5635,5032,5628,49,5633,5636,5187,3121,5334,5637,1144,984,4412,4413,5004,3104,3106,2294,3490,4820,3834,5003,3116,5631,913,3108,5632,3828,3832,963,4407,1379,5634],"class_list":["post-2501","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vos3000","category-vos3000-voip-softswitch","tag-account-locked","tag-call-analysis","tag-call-termination","tag-connection-timeout","tag-error-code-mapping","tag-h-323-cause-codes","tag-insufficient-balance","tag-noavailablerouter","tag-not-found-error","tag-q-931-cause-codes","tag-session-timeout","tag-sip-error-codes","tag-sip-response-codes","tag-telecom-error-codes","tag-voip-troubleshooting","tag-vos3000-2-1-9-07","tag-vos3000-account-expired","tag-vos3000-balance-issues","tag-vos3000-call-drop","tag-vos3000-call-end-reasons","tag-vos3000-call-failure","tag-vos3000-cdr-analysis","tag-vos3000-codec-mismatch","tag-vos3000-debug-trace","tag-vos3000-diagnosis","tag-vos3000-disconnect-reason","tag-vos3000-error-codes","tag-vos3000-gateway-error","tag-vos3000-manual","tag-vos3000-response-timeout","tag-vos3000-routing-error","tag-vos3000-sip-403","tag-vos3000-sip-503","tag-vos3000-support","tag-vos3000-termination-reason","tag-vos3000-troubleshooting","tag-vos3000-unregistered"],"acf":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-session-timer-VOS3000-call-end-reasons-VOS3000-Work-Calendar-VOS3000-geofencing-VOS3000%E8%BD%AF%E4%BA%A4%E6%8D%A2%E5%8F%82%E6%95%B0%E4%BC%98%E5%8C%96-VOS3000%E9%94%99%E8%AF%AF%E4%BB%A3%E7%A0%81%E5%A4%A7%E5%85%A8-VOS3000%E8%B4%A6%E6%88%B7%E6%9D%83%E9%99%90%E7%AE%A1%E7%90%86.png?fit=1536%2C1024&ssl=1?v=1775560625","jetpack-related-posts":[{"id":2391,"url":"https:\/\/multahost.com\/blog\/vos3000-call-termination-reasons\/","url_meta":{"origin":2501,"position":0},"title":"VOS3000 Call Termination Reasons: Complete Troubleshooting Reference Guide","author":"king","date":"March 31, 2026","format":false,"excerpt":"Complete VOS3000 call termination reasons reference. Troubleshoot session timeout, account issues, balance problems, and analyze CDR for call failure diagnosis.","rel":"","context":"In &quot;VOS3000&quot;","block_context":{"text":"VOS3000","link":"https:\/\/multahost.com\/blog\/category\/vos3000\/"},"img":{"alt_text":"SIP ALG Problems, VOS3000 gateway configuration, VoIP Fraud Prevention, VOS3000 Media Proxy, VOS3000 Call Termination Reasons","src":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/SIP-ALG-Problems-VOS3000-gateway-configuration-VoIP-Fraud-Prevention-VOS3000-Media-Proxy-VOS3000-Call-Termination-Reasons-2.png?fit=1200%2C538&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/SIP-ALG-Problems-VOS3000-gateway-configuration-VoIP-Fraud-Prevention-VOS3000-Media-Proxy-VOS3000-Call-Termination-Reasons-2.png?fit=1200%2C538&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/SIP-ALG-Problems-VOS3000-gateway-configuration-VoIP-Fraud-Prevention-VOS3000-Media-Proxy-VOS3000-Call-Termination-Reasons-2.png?fit=1200%2C538&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/SIP-ALG-Problems-VOS3000-gateway-configuration-VoIP-Fraud-Prevention-VOS3000-Media-Proxy-VOS3000-Call-Termination-Reasons-2.png?fit=1200%2C538&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/SIP-ALG-Problems-VOS3000-gateway-configuration-VoIP-Fraud-Prevention-VOS3000-Media-Proxy-VOS3000-Call-Termination-Reasons-2.png?fit=1200%2C538&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":3180,"url":"https:\/\/multahost.com\/blog\/vos3000-sip-response-codes\/","url_meta":{"origin":2501,"position":1},"title":"VOS3000 SIP Response Codes CDR Complete 30-Plus Important Code Reference","author":"king","date":"April 21, 2026","format":false,"excerpt":"VOS3000 SIP response codes CDR reference with 30+ codes. Understand 1xx through 6xx SIP responses in CDRs for troubleshooting, quality analysis, and routing.","rel":"","context":"In &quot;VOS3000&quot;","block_context":{"text":"VOS3000","link":"https:\/\/multahost.com\/blog\/category\/vos3000\/"},"img":{"alt_text":"VOS3000 LRN Number Portability, VOS3000 LRN Server Configuration, VOS3000 Server-Side End Reasons, VOS3000 H323 Q850 Cause Codes, VOS3000 SIP Response Codes CDR","src":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-LRN-Number-Portability-VOS3000-LRN-Server-Configuration-VOS3000-Server-Side-End-Reasons-VOS3000-H323-Q850-Cause-Codes-VOS3000-SIP-Response-Codes-CDR.png?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-LRN-Number-Portability-VOS3000-LRN-Server-Configuration-VOS3000-Server-Side-End-Reasons-VOS3000-H323-Q850-Cause-Codes-VOS3000-SIP-Response-Codes-CDR.png?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-LRN-Number-Portability-VOS3000-LRN-Server-Configuration-VOS3000-Server-Side-End-Reasons-VOS3000-H323-Q850-Cause-Codes-VOS3000-SIP-Response-Codes-CDR.png?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-LRN-Number-Portability-VOS3000-LRN-Server-Configuration-VOS3000-Server-Side-End-Reasons-VOS3000-H323-Q850-Cause-Codes-VOS3000-SIP-Response-Codes-CDR.png?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-LRN-Number-Portability-VOS3000-LRN-Server-Configuration-VOS3000-Server-Side-End-Reasons-VOS3000-H323-Q850-Cause-Codes-VOS3000-SIP-Response-Codes-CDR.png?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":1630,"url":"https:\/\/multahost.com\/blog\/vos3000-call-termination\/","url_meta":{"origin":2501,"position":2},"title":"VOS3000 Call Termination Reasons Dictionary: Important Full Reference Guide","author":"king","date":"March 8, 2026","format":false,"excerpt":"VOS3000 call termination reasons dictionary: complete reference of server\u2011side, SIP, and H.323 call end codes. Troubleshoot call failures quickly with this comprehensive guide.","rel":"","context":"In &quot;VOS3000&quot;","block_context":{"text":"VOS3000","link":"https:\/\/multahost.com\/blog\/category\/vos3000\/"},"img":{"alt_text":"VOS3000 Installation, VOS3000 Server, VOS3000 SoftSwitch, VOS3000 Switch, VOS3000, VOS3000 Pricem VOS3000 Web, VOS3000 API, VOS3000 Rent, VOS3000 Manual, VOS3000 Downloads, VOS3000 VoIP, VOS3000 Carrier Switch, VOS3000, VOS3000 Login, VOS3000 Monitoring, VOS3000 Performance Metrics, VOS3000 Call Routing, VOS3000 Security, VOS3000 Web Manager, VOS3000 Versions, VOS3000 BillingVOS3000 Monitoring,VOS3000 Capacity, VOS3000 Billing System, VOS3000 License,VOS3000 Installation, VOS3000 Server, VOS3000 SoftSwitch, VOS3000 Switch, VOS3000, VOS3000 Pricem VOS3000 Web, VOS3000 API, VOS3000 Rent, VOS3000 Manual, VOS3000 Downloads, VOS3000 VoIP, VOS3000 Carrier Switch, VOS3000, VOS3000 Login, VOS3000 Monitoring, VOS3000 Performance Metrics, VOS3000 Call Routing, VOS3000 Security, VOS3000 Web Manager, VOS3000 Versions, VOS3000 BillingVOS3000 Monitoring,VOS3000 Capacity, VOS3000 Billing System, VOS3000 License, Mobile Apps for VOS3000, VOS3000 Mobile Apps, Mobile Apps, VOS3000 Apps, Android VOS3000, VOS3000 in IOS, Manual for VOS3000, VOS3000 Manual, Manual VOS3000, Reference Manual VOS3000, User Manual VOS3000, VOS\u5b89\u88c5, VOS3000 Security, VOS3000 \u6258\u7ba1, VOS3000 architecture, VOS3000 call termination, VOS3000 Data Maintenance, VOS3000 Disaster Recovery, VOS3000 System Parameters","src":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2025\/09\/VOS3000-Offer-1-1024x683.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2025\/09\/VOS3000-Offer-1-1024x683.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2025\/09\/VOS3000-Offer-1-1024x683.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2025\/09\/VOS3000-Offer-1-1024x683.png?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":2408,"url":"https:\/\/multahost.com\/blog\/sip-403-forbidden\/","url_meta":{"origin":2501,"position":3},"title":"SIP 403 Forbidden: Complete Troubleshooting Guide for VoIP Access Denied Errors","author":"king","date":"April 3, 2026","format":false,"excerpt":"Fix SIP 403 Forbidden errors in VoIP. Complete troubleshooting guide for access denied, authentication failures, and VOS3000 gateway configuration issues.","rel":"","context":"In &quot;VOS3000&quot;","block_context":{"text":"VOS3000","link":"https:\/\/multahost.com\/blog\/category\/vos3000\/"},"img":{"alt_text":"SIP 403 forbidden, VOS3000 QoS configuration, VOS3000 debug trace, VOS3000 SIP session timer, VOS3000 dial plan, VOS3000 routing optimization","src":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/SIP-403-forbidden-VOS3000-QoS-configuration-VOS3000-debug-trace-VOS3000-SIP-session-timer-VOS3000-dial-plan-VOS3000-routing-optimization-2.png?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/SIP-403-forbidden-VOS3000-QoS-configuration-VOS3000-debug-trace-VOS3000-SIP-session-timer-VOS3000-dial-plan-VOS3000-routing-optimization-2.png?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/SIP-403-forbidden-VOS3000-QoS-configuration-VOS3000-debug-trace-VOS3000-SIP-session-timer-VOS3000-dial-plan-VOS3000-routing-optimization-2.png?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/SIP-403-forbidden-VOS3000-QoS-configuration-VOS3000-debug-trace-VOS3000-SIP-session-timer-VOS3000-dial-plan-VOS3000-routing-optimization-2.png?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/SIP-403-forbidden-VOS3000-QoS-configuration-VOS3000-debug-trace-VOS3000-SIP-session-timer-VOS3000-dial-plan-VOS3000-routing-optimization-2.png?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":2850,"url":"https:\/\/multahost.com\/blog\/vos3000-sip-503-408-error-fix\/","url_meta":{"origin":2501,"position":4},"title":"VOS3000 SIP 503 408 Error Fix: Complete Troubleshooting Guide for VoIP Operators","author":"king","date":"April 13, 2026","format":false,"excerpt":"VOS3000 SIP 503 408 error fix guide with step-by-step troubleshooting. Resolve Service Unavailable and Request Timeout errors in your VoIP softswitch quickly and permanently.","rel":"","context":"In &quot;VOS3000&quot;","block_context":{"text":"VOS3000","link":"https:\/\/multahost.com\/blog\/category\/vos3000\/"},"img":{"alt_text":"VOS3000 Server Migration, VOS3000 SIP 503 408 error, VOS3000 Time-Based Routing, VOS3000 Echo Delay Fix, VOS3000 iptables SIP Scanner, VOS3000 Vendor Failover, VOS3000 SIP 503\/408 error","src":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-Server-Migration-VOS3000-SIP-503-error-VOS3000-Time-Based-Routing-VOS3000-Echo-Delay-Fix-VOS3000-iptables-SIP-Scanner-VOS3000-Vendor-Failover-11.png?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-Server-Migration-VOS3000-SIP-503-error-VOS3000-Time-Based-Routing-VOS3000-Echo-Delay-Fix-VOS3000-iptables-SIP-Scanner-VOS3000-Vendor-Failover-11.png?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-Server-Migration-VOS3000-SIP-503-error-VOS3000-Time-Based-Routing-VOS3000-Echo-Delay-Fix-VOS3000-iptables-SIP-Scanner-VOS3000-Vendor-Failover-11.png?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-Server-Migration-VOS3000-SIP-503-error-VOS3000-Time-Based-Routing-VOS3000-Echo-Delay-Fix-VOS3000-iptables-SIP-Scanner-VOS3000-Vendor-Failover-11.png?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-Server-Migration-VOS3000-SIP-503-error-VOS3000-Time-Based-Routing-VOS3000-Echo-Delay-Fix-VOS3000-iptables-SIP-Scanner-VOS3000-Vendor-Failover-11.png?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":2326,"url":"https:\/\/multahost.com\/blog\/vos3000-troubleshooting-guide-2026\/","url_meta":{"origin":2501,"position":5},"title":"VOS3000 Troubleshooting Guide 2026 \u2013 20 Most Common Errors &amp; Fixes (According Official Manual)","author":"king","date":"March 28, 2026","format":false,"excerpt":"Complete VOS3000 Troubleshooting Guide 2026 with 20 most common errors & real fixes from the official manual. SIP registration fail, CDR not showing, high CPU, one-way audio, license errors & more. Step-by-step solutions.","rel":"","context":"In &quot;VOS3000&quot;","block_context":{"text":"VOS3000","link":"https:\/\/multahost.com\/blog\/category\/vos3000\/"},"img":{"alt_text":"VOS3000 troubleshooting guide 2026","src":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/VOS3000-troubleshooting-guide.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/VOS3000-troubleshooting-guide.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/VOS3000-troubleshooting-guide.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/VOS3000-troubleshooting-guide.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/VOS3000-troubleshooting-guide.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/multahost.com\/blog\/wp-json\/wp\/v2\/posts\/2501","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/multahost.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/multahost.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/multahost.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/multahost.com\/blog\/wp-json\/wp\/v2\/comments?post=2501"}],"version-history":[{"count":0,"href":"https:\/\/multahost.com\/blog\/wp-json\/wp\/v2\/posts\/2501\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/multahost.com\/blog\/wp-json\/wp\/v2\/media\/2498"}],"wp:attachment":[{"href":"https:\/\/multahost.com\/blog\/wp-json\/wp\/v2\/media?parent=2501"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/multahost.com\/blog\/wp-json\/wp\/v2\/categories?post=2501"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/multahost.com\/blog\/wp-json\/wp\/v2\/tags?post=2501"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}