{"id":3494,"date":"2026-04-30T05:38:41","date_gmt":"2026-04-30T05:38:41","guid":{"rendered":"https:\/\/multahost.com\/blog\/?p=3494"},"modified":"2026-04-30T05:51:25","modified_gmt":"2026-04-30T05:51:25","slug":"vos3000-ivr-codec-priority","status":"publish","type":"post","link":"https:\/\/multahost.com\/blog\/vos3000-ivr-codec-priority\/","title":{"rendered":"VOS3000 IVR Codec Priority Advanced Voice Prompt Encoding Easy Configuration"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\" id=\"vos-3000-ivr-codec-priority-advanced-voice-prompt-encoding-configuration\">VOS3000 IVR Codec Priority: Advanced Voice Prompt Encoding Configuration<\/h1>\n\n\n\n<p>\ud83c\udfa7 When your VOS3000 IVR system plays a voice prompt to a caller, which audio codec does it use? Does it match the caller&#8217;s codec, or does it force a specific encoding? The answer is controlled by the <strong>VOS3000 IVR codec priority<\/strong> parameter \u2014 IVR_CODEC_PRIORITY \u2014 which determines the order in which the IVR negotiates codecs for voice prompt playback. Getting this setting right is critical: a mismatched codec forces the softswitch to transcode, consuming CPU resources and potentially degrading voice quality. \ud83c\udfaf<\/p>\n\n\n\n<p>\ud83d\udccb According to the official VOS3000 V2.1.9.07 Manual, Section 4.3.5.3 (Audio Service Parameter), the <strong>IVR_CODEC_PRIORITY<\/strong> parameter has a default value of &#8220;g729a,g729,g723,g711a,g711u&#8221; and is described as &#8220;Voice Codecs Priority (g729a,g729,g723,g711a,g711u).&#8221; This comma-separated list defines the order in which the IVR attempts to negotiate codecs with the calling endpoint. \ud83d\udd04<\/p>\n\n\n\n<p>\ud83d\udd27 All data in this guide is sourced exclusively from the official VOS3000 V2.1.9.07 Manual, Section 4.3.5.3 \u2014 no fabricated values, no guesswork. For expert assistance with your VOS3000 deployment, contact us on WhatsApp at <strong>+8801911119966<\/strong>. \ud83d\udca1<\/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-ivr-codec-priority-advanced-voice-prompt-encoding-configuration\">VOS3000 IVR Codec Priority: Advanced Voice Prompt Encoding Configuration<\/a><ul><li><a href=\"#\ud83c\udfa7-what-is-vos-3000-ivr-codec-priority\">\ud83c\udfa7 What Is VOS3000 IVR Codec Priority?<\/a><ul><li><a href=\"#\ud83c\udfaf-why-vos-3000-ivr-codec-priority-matters\">\ud83c\udfaf Why VOS3000 IVR Codec Priority Matters<\/a><\/li><\/ul><\/li><li><a href=\"#\u2699\ufe0f-supported-ivr-codecs-complete-reference\">\u2699\ufe0f Supported IVR Codecs \u2014 Complete Reference (VOS3000 IVR Codec Priority)<\/a><\/li><li><a href=\"#\ud83d\udcca-codec-priority-deployment-scenarios\">\ud83d\udcca Codec Priority \u2014 Deployment Scenarios (VOS3000 IVR Codec Priority)<\/a><\/li><li><a href=\"#\ud83d\udee1\ufe0f-common-codec-priority-problems-and-solutions\">\ud83d\udee1\ufe0f Common VOS3000 IVR Codec Priority Problems and Solutions<\/a><ul><li><a href=\"#\u274c-problem-1-ivr-voice-prompts-sound-distorted\">\u274c Problem 1: IVR Voice Prompts Sound Distorted<\/a><\/li><li><a href=\"#\u274c-problem-2-ivr-prompts-not-playing-no-audio\">\u274c Problem 2: IVR Prompts Not Playing \u2014 No Audio<\/a><\/li><li><a href=\"#\u274c-problem-3-high-cpu-usage-on-vos-3000-server\">\u274c Problem 3: High CPU Usage on VOS3000 Server<\/a><\/li><\/ul><\/li><li><a href=\"#\ud83d\udcca-vos-3000-ivr-codec-priority-configuration-checklist\">\ud83d\udcca VOS3000 IVR Codec Priority Configuration Checklist<\/a><\/li><li><a href=\"#\u2753-frequently-asked-questions\">\u2753 Frequently Asked Questions<\/a><ul><li><a href=\"#\u2753-what-is-vos-3000-ivr-codec-priority\">\u2753 What is VOS3000 IVR codec priority?<\/a><\/li><li><a href=\"#\u2753-what-is-the-default-ivr-codec-priority\">\u2753 What is the default IVR_CODEC_PRIORITY?<\/a><\/li><li><a href=\"#\u2753-why-should-i-match-the-ivr-codec-to-the-endpoint-codec\">\u2753 Why should I match the IVR codec to the endpoint codec?<\/a><\/li><li><a href=\"#\u2753-can-i-add-codecs-not-listed-in-the-default-priority\">\u2753 Can I add codecs not listed in the default priority?<\/a><\/li><li><a href=\"#\u2753-what-is-ivr-web-callback-same-time-codec\">\u2753 What is IVR_WEB_CALLBACK_SAME_TIME_CODEC?<\/a><\/li><li><a href=\"#\u2753-how-do-i-change-the-ivr-codec-priority-in-vos-3000\">\u2753 How do I change the IVR codec priority in VOS3000?<\/a><\/li><\/ul><\/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=\"\ud83c\udfa7-what-is-vos-3000-ivr-codec-priority\">\ud83c\udfa7 What Is VOS3000 IVR Codec Priority?<\/h2>\n\n\n\n<p>\u23f1\ufe0f The <strong>VOS3000 IVR codec priority<\/strong> is a parameter that determines the order in which the IVR module negotiates audio codecs during call setup. When the IVR needs to play a voice prompt (such as a balance announcement, IVR menu, or voicemail greeting), it must establish a media stream with the calling endpoint using a mutually supported codec. The IVR_CODEC_PRIORITY parameter tells the IVR which codec to try first, second, third, and so on. \ud83d\udccb<\/p>\n\n\n\n<p>\ud83d\udccc According to the official VOS3000 V2.1.9.07 Manual, Section 4.3.5.3:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th class=\"has-text-align-left\" data-align=\"left\">Attribute<\/th><th class=\"has-text-align-left\" data-align=\"left\">Value<\/th><\/tr><tr><td>\ud83d\udccc Parameter<\/td><td>IVR_CODEC_PRIORITY<\/td><\/tr><tr><td>\ud83d\udd22 Default Value<\/td><td>g729a,g729,g723,g711a,g711u<\/td><\/tr><tr><td>\ud83d\udcdd Description<\/td><td>Voice Codecs Priority (g729a,g729,g723,g711a,g711u)<\/td><\/tr><tr><td>\ud83d\udccd Location<\/td><td>Operation management \u2192 Softswitch management \u2192 Additional settings \u2192 Audio service parameter<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\ud83d\udca1 <strong>Key insight:<\/strong> The default priority order places G.729A first \u2014 a low-bandwidth codec that uses only 8 kbps. This makes sense for IVR scenarios where bandwidth efficiency is prioritized and the audio content (voice prompts) is pre-recorded and can be encoded in any supported format. The manual explicitly lists the supported codecs in the parameter description: g729a, g729, g723, g711a, g711u. Only these five codecs are available for IVR codec priority configuration. \ud83d\udd12<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83c\udfaf-why-vos-3000-ivr-codec-priority-matters\">\ud83c\udfaf Why VOS3000 IVR Codec Priority Matters<\/h3>\n\n\n\n<p>\u26a0\ufe0f Incorrect codec priority configuration causes several problems:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83c\udfa7 <strong>Transcoding overhead:<\/strong> If the IVR selects a codec different from what the endpoint is using, the softswitch must transcode the audio in real time \u2014 consuming CPU resources and adding latency<\/li>\n\n\n\n<li>\ud83d\udcde <strong>Voice quality degradation:<\/strong> Transcoding between compressed codecs (e.g., G.729 to G.711 and back to G.729) introduces cumulative quality loss \u2014 the audio sounds robotic or distorted<\/li>\n\n\n\n<li>\ud83d\udcca <strong>Resource waste:<\/strong> Each transcoding session consumes DSP or CPU capacity \u2014 in high-concurrency IVR deployments, excessive transcoding can exhaust system resources<\/li>\n\n\n\n<li>\ud83d\udcb0 <strong>Bandwidth mismatch:<\/strong> If the IVR forces a high-bandwidth codec (G.711) when a low-bandwidth codec (G.729) would suffice, unnecessary bandwidth is consumed on the IVR media path<\/li>\n\n\n\n<li>\ud83d\udd04 <strong>Negotiation failures:<\/strong> If the IVR and endpoint have no common codec in their supported lists, the call cannot establish a media stream \u2014 the IVR prompt will not play<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u2699\ufe0f-supported-ivr-codecs-complete-reference\">\u2699\ufe0f Supported IVR Codecs \u2014 Complete Reference (VOS3000 IVR Codec Priority)<\/h2>\n\n\n\n<p>\ud83d\udccb The <strong>VOS3000 IVR codec priority<\/strong> supports five codecs, each with different characteristics. Understanding these codecs is essential for proper priority configuration: \ud83d\udce1<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th class=\"has-text-align-left\" data-align=\"left\">Codec<\/th><th class=\"has-text-align-left\" data-align=\"left\">Bitrate<\/th><th class=\"has-text-align-left\" data-align=\"left\">Quality<\/th><th class=\"has-text-align-left\" data-align=\"left\">Best For<\/th><\/tr><tr><td>\ud83c\udfa7 <strong>g729a<\/strong><\/td><td>8 kbps<\/td><td>Good (compressed)<\/td><td>Bandwidth-efficient IVR; default first choice; Annex A variant<\/td><\/tr><tr><td>\ud83c\udfa7 <strong>g729<\/strong><\/td><td>8 kbps<\/td><td>Good (compressed)<\/td><td>Standard G.729 without Annex A; compatible with most endpoints<\/td><\/tr><tr><td>\ud83c\udfa7 <strong>g723<\/strong><\/td><td>5.3\/6.3 kbps<\/td><td>Fair (highly compressed)<\/td><td>Low-bandwidth links; minimal bandwidth consumption<\/td><\/tr><tr><td>\ud83c\udfa7 <strong>g711a<\/strong><\/td><td>64 kbps<\/td><td>Excellent (uncompressed)<\/td><td>High-quality IVR prompts; A-law standard (Europe\/international)<\/td><\/tr><tr><td>\ud83c\udfa7 <strong>g711u<\/strong><\/td><td>64 kbps<\/td><td>Excellent (uncompressed)<\/td><td>High-quality IVR prompts; u-law standard (North America\/Japan)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\ud83d\udca1 <strong>Codec selection principle:<\/strong> The IVR should ideally use the same codec as the calling endpoint. This eliminates transcoding entirely \u2014 the voice prompt audio is simply passed through in the same encoding. To achieve this, list the most commonly used codecs first in the priority list, matching your endpoint population&#8217;s typical codec preferences. For help with codec configuration, reach us on WhatsApp at <strong>+8801911119966<\/strong>. \ud83d\udcf1<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcca-codec-priority-deployment-scenarios\">\ud83d\udcca Codec Priority \u2014 Deployment Scenarios (VOS3000 IVR Codec Priority)<\/h2>\n\n\n\n<p>\ud83c\udfe2 Different deployment scenarios benefit from different codec priority orders: \ud83d\udca1<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th class=\"has-text-align-left\" data-align=\"left\">Scenario<\/th><th class=\"has-text-align-left\" data-align=\"left\">Recommended Priority<\/th><th class=\"has-text-align-left\" data-align=\"left\">Rationale<\/th><\/tr><tr><td>\ud83c\udf0d Wholesale carrier (G.729 endpoints)<\/td><td>g729a,g729,g723,g711a,g711u (default)<\/td><td>Most endpoints use G.729; bandwidth efficiency is paramount<\/td><\/tr><tr><td>\ud83c\udfe2 Enterprise SIP phones (G.711)<\/td><td>g711a,g711u,g729a,g729,g723<\/td><td>Desktop SIP phones typically use G.711; prioritize for zero-transcoding<\/td><\/tr><tr><td>\ud83d\udcde Mixed environment<\/td><td>g729a,g711a,g711u,g729,g723<\/td><td><\/td><td>Balance between bandwidth savings (G.729) and quality (G.711)<\/td><\/tr><tr><td>\ud83d\udcde North America deployment<\/td><td>g711u,g729a,g729,g723,g711a<\/td><td>G.711 u-law is the North American standard; prioritize it first<\/td><\/tr><tr><td>\ud83c\udf0d European deployment<\/td><td>g711a,g729a,g729,g723,g711u<\/td><td>G.711 A-law is the European standard; prioritize it first<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\ud83c\udfaf <strong>Related parameter:<\/strong> The manual also lists IVR_WEB_CALLBACK_SAME_TIME_CODEC with a default of &#8220;g729a&#8221; \u2014 described as &#8220;Codec for Call Both Side.&#8221; This parameter specifically controls the codec used when both sides of a callback call use the same codec simultaneously. For more on codec configuration, see our <a href=\"https:\/\/multahost.com\/blog\/vos3000-parameter-description\/\">VOS3000 parameter description<\/a> guide. \ud83d\udcd6<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udee1\ufe0f-common-codec-priority-problems-and-solutions\">\ud83d\udee1\ufe0f Common VOS3000 IVR Codec Priority Problems and Solutions<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u274c-problem-1-ivr-voice-prompts-sound-distorted\">\u274c Problem 1: IVR Voice Prompts Sound Distorted<\/h3>\n\n\n\n<p>\ud83d\udd0d <strong>Symptom:<\/strong> When callers reach the IVR menu, the voice prompts sound robotic, garbled, or have audible artifacts.<\/p>\n\n\n\n<p>\ud83d\udca1 <strong>Cause:<\/strong> The IVR is using a compressed codec (G.729 or G.723) while the endpoint is using G.711, forcing the softswitch to transcode. Double transcoding (G.711 \u2192 G.729 \u2192 G.711) degrades quality.<\/p>\n\n\n\n<p>\u2705 <strong>Solutions:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83c\udfa7 Move G.711 codecs higher in the IVR_CODEC_PRIORITY list if endpoints primarily use G.711<\/li>\n\n\n\n<li>\ud83d\udccb Pre-encode IVR voice prompts in the same codec as the most common endpoint codec<\/li>\n\n\n\n<li>\ud83d\udd0d Check if the voice prompt source files are high quality (16-bit PCM, 8kHz) before encoding<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u274c-problem-2-ivr-prompts-not-playing-no-audio\">\u274c Problem 2: IVR Prompts Not Playing \u2014 No Audio<\/h3>\n\n\n\n<p>\ud83d\udd0d <strong>Symptom:<\/strong> The IVR call connects but no voice prompt audio is heard \u2014 the caller hears silence.<\/p>\n\n\n\n<p>\ud83d\udca1 <strong>Cause:<\/strong> The IVR and endpoint failed to negotiate a common codec \u2014 there is no mutually supported codec in the SDP negotiation.<\/p>\n\n\n\n<p>\u2705 <strong>Solutions:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udccb Verify IVR_CODEC_PRIORITY includes all five supported codecs<\/li>\n\n\n\n<li>\ud83d\udd0d Check the endpoint&#8217;s supported codec list \u2014 ensure at least one codec overlaps with IVR&#8217;s list<\/li>\n\n\n\n<li>\ud83d\udcde Test with a different endpoint that supports more codecs<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u274c-problem-3-high-cpu-usage-on-vos-3000-server\">\u274c Problem 3: High CPU Usage on VOS3000 Server<\/h3>\n\n\n\n<p>\ud83d\udd0d <strong>Symptom:<\/strong> The VOS3000 server shows high CPU utilization, especially during peak IVR call volume.<\/p>\n\n\n\n<p>\ud83d\udca1 <strong>Cause:<\/strong> Excessive transcoding between IVR codec and endpoint codec is consuming significant CPU resources on every IVR call.<\/p>\n\n\n\n<p>\u2705 <strong>Solutions:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83c\udfa7 Reorder IVR_CODEC_PRIORITY to match the most common endpoint codec \u2014 eliminate transcoding where possible<\/li>\n\n\n\n<li>\ud83d\udcca Monitor the number of transcoding sessions and compare to total IVR call count<\/li>\n\n\n\n<li>\ud83d\udcde Consider standardizing endpoint codec configuration to match IVR_CODEC_PRIORITY<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcca-vos-3000-ivr-codec-priority-configuration-checklist\">\ud83d\udcca VOS3000 IVR Codec Priority Configuration Checklist<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th class=\"has-text-align-left\" data-align=\"left\">Check<\/th><th class=\"has-text-align-left\" data-align=\"left\">Action<\/th><th class=\"has-text-align-left\" data-align=\"left\">Status<\/th><\/tr><tr><td>\ud83d\udccc 1<\/td><td>Identify the most common codec used by your endpoints (G.729 or G.711)<\/td><td>\u2610<\/td><\/tr><tr><td>\ud83d\udccc 2<\/td><td>Set IVR_CODEC_PRIORITY to list the most common endpoint codec first<\/td><td>\u2610<\/td><\/tr><tr><td>\ud83d\udccc 3<\/td><td>Ensure voice prompt audio files are encoded in the first-priority codec<\/td><td>\u2610<\/td><\/tr><tr><td>\ud83d\udccc 4<\/td><td>Test IVR calls and verify no transcoding occurs (check SIP SDP negotiation)<\/td><td>\u2610<\/td><\/tr><tr><td>\ud83d\udccc 5<\/td><td>Monitor CPU usage and voice quality \u2014 adjust priority if transcoding is detected<\/td><td>\u2610<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\ud83d\udcde For expert guidance on VOS3000 IVR codec configuration, reach us on WhatsApp at <strong>+8801911119966<\/strong>. \ud83d\udca1<\/p>\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=\"\u2753-what-is-vos-3000-ivr-codec-priority\">\u2753 What is VOS3000 IVR codec priority?<\/h3>\n\n\n\n<p>\ud83c\udfa7 <strong>VOS3000 IVR codec priority<\/strong> is the parameter IVR_CODEC_PRIORITY that determines the order in which the IVR negotiates audio codecs during call setup. According to the VOS3000 V2.1.9.07 Manual (Section 4.3.5.3), the default is &#8220;g729a,g729,g723,g711a,g711u&#8221; \u2014 the IVR tries G.729A first, then G.729, G.723, G.711 A-law, and finally G.711 u-law. The parameter supports five codecs and defines the negotiation priority order. Matching the IVR codec to the endpoint codec avoids transcoding, which saves CPU resources and preserves voice quality. \ud83d\udccb<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u2753-what-is-the-default-ivr-codec-priority\">\u2753 What is the default IVR_CODEC_PRIORITY?<\/h3>\n\n\n\n<p>\ud83d\udccb The default <strong>IVR_CODEC_PRIORITY<\/strong> is <strong>g729a,g729,g723,g711a,g711u<\/strong> according to the VOS3000 V2.1.9.07 Manual (Section 4.3.5.3). This order prioritizes bandwidth-efficient codecs (G.729A at 8 kbps) over high-quality codecs (G.711 at 64 kbps). The default is well-suited for wholesale VoIP deployments where bandwidth conservation is important. If your endpoints primarily use G.711 (e.g., enterprise SIP phones), consider reordering the priority to place g711a or g711u first. \ud83d\udd27<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u2753-why-should-i-match-the-ivr-codec-to-the-endpoint-codec\">\u2753 Why should I match the IVR codec to the endpoint codec?<\/h3>\n\n\n\n<p>\ud83d\udd04 When the IVR and endpoint use the same codec, no transcoding is required \u2014 the voice prompt audio is passed through directly in the same encoding. Transcoding (converting between codecs) consumes CPU resources on the VOS3000 server, adds latency, and degrades voice quality \u2014 especially when double-transcoding occurs (e.g., G.711 endpoint \u2194 G.729 IVR, requiring conversion in both directions). By matching the IVR codec to the most common endpoint codec, you eliminate transcoding overhead entirely. \ud83d\udca1<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u2753-can-i-add-codecs-not-listed-in-the-default-priority\">\u2753 Can I add codecs not listed in the default priority?<\/h3>\n\n\n\n<p>\ud83d\udccb The VOS3000 manual explicitly lists the supported codecs for IVR_CODEC_PRIORITY as: g729a, g729, g723, g711a, g711u. These are the five codecs supported by the IVR module for voice prompt playback. Adding codecs not in this list (such as GSM, iLBC, or Opus) is not supported by the IVR_CODEC_PRIORITY parameter. Only the five listed codecs can be included in the priority configuration. If your endpoints use other codecs, the VOS3000 softswitch will transcode between the endpoint codec and the IVR&#8217;s selected codec. \ud83d\udce1<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u2753-what-is-ivr-web-callback-same-time-codec\">\u2753 What is IVR_WEB_CALLBACK_SAME_TIME_CODEC?<\/h3>\n\n\n\n<p>\ud83d\udcde According to the VOS3000 V2.1.9.07 Manual (Section 4.3.5.3), <strong>IVR_WEB_CALLBACK_SAME_TIME_CODEC<\/strong> has a default of &#8220;g729a&#8221; and is described as &#8220;Codec for Call Both Side.&#8221; This parameter specifically controls the codec used when both parties of a callback call use the same codec simultaneously. While IVR_CODEC_PRIORITY controls the general codec negotiation order, this parameter provides a specific override for the simultaneous-call codec scenario. For more on <a href=\"https:\/\/multahost.com\/blog\/vos3000-parameter-description\/\">IVR callback parameters<\/a>, see our callback timing guide. \ud83d\udcd6<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u2753-how-do-i-change-the-ivr-codec-priority-in-vos-3000\">\u2753 How do I change the IVR codec priority in VOS3000?<\/h3>\n\n\n\n<p>\u2699\ufe0f To change the IVR codec priority: (1) Log in to VOS3000 Client, (2) Navigate to Operation management \u2192 Softswitch management \u2192 Additional settings \u2192 Audio service parameter (Section 4.3.5.3), (3) Locate IVR_CODEC_PRIORITY, (4) Edit the comma-separated codec list to reflect your desired priority order (e.g., &#8220;g711a,g711u,g729a,g729,g723&#8221; for G.711-first deployments), (5) Save and apply the changes. After saving, new IVR calls will use the updated codec negotiation order. Existing calls are not affected. \ud83d\udccb<\/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=\"VOS3000 Authorization Type Hierarchy, VOS3000 Reverse Charging, VOS3000 DID DDI Numbers, VOS3000 Call Forwarding Types, VOS3000 Do Not Disturb Mode, VOS3000 Display Caller ID Forwarding, VOS3000 Monthly Consumption Limits, VOS3000 IVR Callback Timing, VOS3000 IVR Call State UDP Reporting, VOS3000 IVR Codec Priority, VOS3000 IVR Voicemail Navigation, VOS3000 IVR Custom Ringback Tone, VOS3000 IVR DTMF Parse Mode, VOS3000 IVR Voicemail System, VOS3000 authorization type hierarchy, VOS3000 reverse charging configuration, VOS3000 DID DDI numbers, VOS3000 call forwarding types, VOS3000 do not disturb mode, VOS3000 display caller ID forwarding, VOS3000 monthly consumption limits, VOS3000 IVR callback timing, VOS3000 IVR call state UDP, VOS3000 IVR codec priority, VOS3000 IVR inband DTMF detection, VOS3000 IVR DTMF parse mode, VOS3000 IVR voicemail system, VOS3000 IVR voice alarm configuration, VOS3000 IVR custom ringback tone, VOS3000 IVR voicemail navigation\" title=\"\" class=\"lazyload\" data-src=\"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-Do-Not-Disturb-Mode-VOS3000-Display-Caller-ID-Forwarding-VOS3000-Monthly-Consumption-Limits-VOS3000-IVR-Callback-Timing-2.png?resize=809%2C540\"><\/td><td><img data-recalc-dims=\"1\" height=\"540\" width=\"809\" decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" alt=\"VOS3000 Authorization Type Hierarchy, VOS3000 Reverse Charging, VOS3000 DID DDI Numbers, VOS3000 Call Forwarding Types, VOS3000 Do Not Disturb Mode, VOS3000 Display Caller ID Forwarding, VOS3000 Monthly Consumption Limits, VOS3000 IVR Callback Timing, VOS3000 IVR Call State UDP Reporting, VOS3000 IVR Codec Priority, VOS3000 IVR Voicemail Navigation, VOS3000 IVR Custom Ringback Tone, VOS3000 IVR DTMF Parse Mode, VOS3000 IVR Voicemail System, VOS3000 authorization type hierarchy, VOS3000 reverse charging configuration, VOS3000 DID DDI numbers, VOS3000 call forwarding types, VOS3000 do not disturb mode, VOS3000 display caller ID forwarding, VOS3000 monthly consumption limits, VOS3000 IVR callback timing, VOS3000 IVR call state UDP, VOS3000 IVR codec priority, VOS3000 IVR inband DTMF detection, VOS3000 IVR DTMF parse mode, VOS3000 IVR voicemail system, VOS3000 IVR voice alarm configuration, VOS3000 IVR custom ringback tone, VOS3000 IVR voicemail navigation\" title=\"\" class=\"lazyload\" data-src=\"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-Do-Not-Disturb-Mode-VOS3000-Display-Caller-ID-Forwarding-VOS3000-Monthly-Consumption-Limits-VOS3000-IVR-Callback-Timing-2.png?resize=809%2C540\"><\/td><td><img data-recalc-dims=\"1\" height=\"540\" width=\"809\" decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" alt=\"VOS3000 Authorization Type Hierarchy, VOS3000 Reverse Charging, VOS3000 DID DDI Numbers, VOS3000 Call Forwarding Types, VOS3000 Do Not Disturb Mode, VOS3000 Display Caller ID Forwarding, VOS3000 Monthly Consumption Limits, VOS3000 IVR Callback Timing, VOS3000 IVR Call State UDP Reporting, VOS3000 IVR Codec Priority, VOS3000 IVR Voicemail Navigation, VOS3000 IVR Custom Ringback Tone, VOS3000 IVR DTMF Parse Mode, VOS3000 IVR Voicemail System, VOS3000 authorization type hierarchy, VOS3000 reverse charging configuration, VOS3000 DID DDI numbers, VOS3000 call forwarding types, VOS3000 do not disturb mode, VOS3000 display caller ID forwarding, VOS3000 monthly consumption limits, VOS3000 IVR callback timing, VOS3000 IVR call state UDP, VOS3000 IVR codec priority, VOS3000 IVR inband DTMF detection, VOS3000 IVR DTMF parse mode, VOS3000 IVR voicemail system, VOS3000 IVR voice alarm configuration, VOS3000 IVR custom ringback tone, VOS3000 IVR voicemail navigation\" title=\"\" class=\"lazyload\" data-src=\"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-Do-Not-Disturb-Mode-VOS3000-Display-Caller-ID-Forwarding-VOS3000-Monthly-Consumption-Limits-VOS3000-IVR-Callback-Timing-2.png?resize=809%2C540\"><\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Master VOS3000 IVR codec priority: configure IVR_CODEC_PRIORITY for voice prompt encoding. Default g729a g729 g723 g711a g711u. Match IVR codec to endpoint codec to avoid transcoding.<\/p>\n","protected":false},"author":1,"featured_media":3459,"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":[2,644,645,646,647],"tags":[11824,11670,11819,11827,11815,11798,11832,11812,11826,11825,11829,11828,11811,11810,11805,11833,11821,11837,11796,11830,11822,11820,11813,11814,11808,11807,11801,11802,11803,11804,11800,11621,11817,11809,11799,11806,11823,11835,11818,11816,11831,11797],"class_list":["post-3494","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vos3000","category-vos3000-ivr","category-vos3000-ivr-change","category-vos3000-ivr-management","category-vos3000-ivr-settings","tag-vos3000-ivr-audio-codec-settings","tag-vos3000-ivr-audio-service-parameter","tag-vos3000-ivr-bandwidth-optimization","tag-vos3000-ivr-callback-codec","tag-vos3000-ivr-codec-best-practices","tag-vos3000-ivr-codec-configuration","tag-vos3000-ivr-codec-configuration-steps","tag-vos3000-ivr-codec-default-order","tag-vos3000-ivr-codec-deployment","tag-vos3000-ivr-codec-faq","tag-vos3000-ivr-codec-g711","tag-vos3000-ivr-codec-g729","tag-vos3000-ivr-codec-manual-reference","tag-vos3000-ivr-codec-match-endpoint","tag-vos3000-ivr-codec-negotiation","tag-vos3000-ivr-codec-optimization","tag-vos3000-ivr-codec-order-configuration","tag-vos3000-ivr-codec-parameter-description","tag-vos3000-ivr-codec-priority","tag-vos3000-ivr-codec-priority-list","tag-vos3000-ivr-codec-sdp-negotiation","tag-vos3000-ivr-codec-selection","tag-vos3000-ivr-codec-setup-guide","tag-vos3000-ivr-codec-troubleshooting","tag-vos3000-ivr-codec-v2-1-9-07","tag-vos3000-ivr-encoding-priority","tag-vos3000-ivr-g711a-codec","tag-vos3000-ivr-g711u-codec","tag-vos3000-ivr-g723-codec","tag-vos3000-ivr-g729-codec","tag-vos3000-ivr-g729a-codec","tag-vos3000-ivr-section-4-3-5-3","tag-vos3000-ivr-softswitch-codec","tag-vos3000-ivr-transcoding-avoidance","tag-vos3000-ivr-voice-codec","tag-vos3000-ivr-voice-prompt-codec","tag-vos3000-ivr-voice-prompt-encoding","tag-vos3000-ivr-voice-prompt-quality","tag-vos3000-ivr-voice-quality","tag-vos3000-ivr-voip-codec","tag-vos3000-ivr-web_callback_same_time_codec","tag-vos3000-ivr_codec_priority"],"acf":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-IVR-Custom-Ringback-Tone-VOS3000-IVR-DTMF-Parse-Mode-VOS3000-IVR-Voicemail-System.png?fit=1536%2C1024&ssl=1?v=1777503115","jetpack-related-posts":[{"id":1809,"url":"https:\/\/multahost.com\/blog\/vos3000-vicidial-auto-dialer\/","url_meta":{"origin":3494,"position":0},"title":"VOS3000 VICIdial Auto Dialer Solution \u2013 Call Center Important Setup Guide","author":"king","date":"March 13, 2026","format":false,"excerpt":"Complete guide to VOS3000 VICIdial auto dialer solution for call centers. Learn how VICIdial connects with VOS3000 for routing and telecom carrier management.","rel":"","context":"In &quot;VOS3000&quot;","block_context":{"text":"VOS3000","link":"https:\/\/multahost.com\/blog\/category\/vos3000\/"},"img":{"alt_text":"best voip softswitch, vos3000 routing, vos3000 vicidial auto dialer, vos3000 sip trunk configuration","src":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/best-voip-softswitch.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\/03\/best-voip-softswitch.png?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/best-voip-softswitch.png?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/best-voip-softswitch.png?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/best-voip-softswitch.png?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":3404,"url":"https:\/\/multahost.com\/blog\/vos3000-no-answer-auto-blacklist\/","url_meta":{"origin":3494,"position":1},"title":"VOS3000 No-Answer Auto-Blacklist: Proven SS_BLACK_LIST_NO_ANSWER Configuration","author":"king","date":"April 28, 2026","format":false,"excerpt":"Configure VOS3000 no-answer auto-blacklist with SS_BLACK_LIST_NO_ANSWER. Block dead-end numbers, prevent wasted port capacity, and optimize routing.","rel":"","context":"In &quot;VOS3000&quot;","block_context":{"text":"VOS3000","link":"https:\/\/multahost.com\/blog\/category\/vos3000\/"},"img":{"alt_text":"VOS3000 Malicious Caller Blacklist, VOS3000 No-Answer Auto-Blacklist, VOS3000 Concurrent Call Abuse Blacklist, VOS3000 Login Brute-Force Lockout, VOS3000 Password Policy Configuration, VOS3000 Unauthorized SIP Response, VOS3000 TCP Close Reset, VOS3000 Registration Replace Kick, VOS3000 Lightweight Registration Interval, VOS3000 Authentication Retry Limits, VOS3000 Call Authentication Mode","src":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-Registration-Replace-Kick-VOS3000-Lightweight-Registration-Interval-VOS3000-Authentication-Retry-Limits-VOS3000-Call-Authentication-Mode-1.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-Registration-Replace-Kick-VOS3000-Lightweight-Registration-Interval-VOS3000-Authentication-Retry-Limits-VOS3000-Call-Authentication-Mode-1.png?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-Registration-Replace-Kick-VOS3000-Lightweight-Registration-Interval-VOS3000-Authentication-Retry-Limits-VOS3000-Call-Authentication-Mode-1.png?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-Registration-Replace-Kick-VOS3000-Lightweight-Registration-Interval-VOS3000-Authentication-Retry-Limits-VOS3000-Call-Authentication-Mode-1.png?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-Registration-Replace-Kick-VOS3000-Lightweight-Registration-Interval-VOS3000-Authentication-Retry-Limits-VOS3000-Call-Authentication-Mode-1.png?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":1631,"url":"https:\/\/multahost.com\/blog\/vos3000-data-maintenance\/","url_meta":{"origin":3494,"position":2},"title":"VOS3000 Data Maintenance &amp; Auto\u2011Cleanup: Important Database Management Guide","author":"king","date":"March 8, 2026","format":false,"excerpt":"VOS3000 data maintenance guide: learn how to manage CDR tables, enable auto\u2011cleanup, optimize database performance, and prevent disk space issues with scheduled purging.","rel":"","context":"In &quot;VOS3000&quot;","block_context":{"text":"VOS3000","link":"https:\/\/multahost.com\/blog\/category\/vos3000\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/vos3000-banners-post.png?fit=1200%2C402&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/vos3000-banners-post.png?fit=1200%2C402&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/vos3000-banners-post.png?fit=1200%2C402&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/vos3000-banners-post.png?fit=1200%2C402&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/vos3000-banners-post.png?fit=1200%2C402&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":710,"url":"https:\/\/multahost.com\/blog\/why-vos3000-server-getting-restarted-daily-auto\/","url_meta":{"origin":3494,"position":3},"title":"Why VOS3000 Server getting restarted daily auto, Know easy Solution","author":"king","date":"September 29, 2025","format":false,"excerpt":"Why VOS3000 Server getting restarted daily auto? VOS3000 2.1.8.0 or 2.1.8.05 sometime VOS3000 server went down\/restart\/reboot auto daily in a fixed time and VOS3000 server starts but vos3000 softswitch shows offline or softswitch stays offline or red on softswich","rel":"","context":"In &quot;VOS3000&quot;","block_context":{"text":"VOS3000","link":"https:\/\/multahost.com\/blog\/category\/vos3000\/"},"img":{"alt_text":"VOS3000 Server down","src":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2025\/09\/1759078473-e1759086323296.png?fit=928%2C480&ssl=1%3Fv%3D1768597291&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2025\/09\/1759078473-e1759086323296.png?fit=928%2C480&ssl=1%3Fv%3D1768597291&resize=350%2C200 1x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2025\/09\/1759078473-e1759086323296.png?fit=928%2C480&ssl=1%3Fv%3D1768597291&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2025\/09\/1759078473-e1759086323296.png?fit=928%2C480&ssl=1%3Fv%3D1768597291&resize=700%2C400 2x"},"classes":[]},{"id":3491,"url":"https:\/\/multahost.com\/blog\/vos3000-ivr-dtmf-parse\/","url_meta":{"origin":3494,"position":4},"title":"VOS3000 IVR DTMF Parse Mode Smart Auto vs Manual Key Important Detection","author":"king","date":"April 30, 2026","format":false,"excerpt":"Master VOS3000 IVR DTMF parse mode with IVR_PARSE_DTMF_MODE. Configure Auto vs Manual DTMF key detection for IVR menus, PIN entry, and destination number collection in VOS3000.","rel":"","context":"In &quot;VOS3000&quot;","block_context":{"text":"VOS3000","link":"https:\/\/multahost.com\/blog\/category\/vos3000\/"},"img":{"alt_text":"VOS3000 Authorization Type Hierarchy, VOS3000 Reverse Charging, VOS3000 DID DDI Numbers, VOS3000 Call Forwarding Types, VOS3000 Do Not Disturb Mode, VOS3000 Display Caller ID Forwarding, VOS3000 Monthly Consumption Limits, VOS3000 IVR Callback Timing, VOS3000 IVR Call State UDP Reporting, VOS3000 IVR Codec Priority, VOS3000 IVR Voicemail Navigation, VOS3000 IVR Custom Ringback Tone, VOS3000 IVR DTMF Parse Mode, VOS3000 IVR Voicemail System, VOS3000 authorization type hierarchy, VOS3000 reverse charging configuration, VOS3000 DID DDI numbers, VOS3000 call forwarding types, VOS3000 do not disturb mode, VOS3000 display caller ID forwarding, VOS3000 monthly consumption limits, VOS3000 IVR callback timing, VOS3000 IVR call state UDP, VOS3000 IVR codec priority, VOS3000 IVR inband DTMF detection, VOS3000 IVR DTMF parse mode, VOS3000 IVR voicemail system, VOS3000 IVR voice alarm configuration, VOS3000 IVR custom ringback tone, VOS3000 IVR voicemail navigation","src":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-IVR-Callback-Timing-VOS3000-IVR-Call-State-UDP-Reporting-VOS3000-IVR-Codec-Priority-VOS3000-IVR-Voicemail-Navigation-1.png?fit=1200%2C658&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-IVR-Callback-Timing-VOS3000-IVR-Call-State-UDP-Reporting-VOS3000-IVR-Codec-Priority-VOS3000-IVR-Voicemail-Navigation-1.png?fit=1200%2C658&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-IVR-Callback-Timing-VOS3000-IVR-Call-State-UDP-Reporting-VOS3000-IVR-Codec-Priority-VOS3000-IVR-Voicemail-Navigation-1.png?fit=1200%2C658&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-IVR-Callback-Timing-VOS3000-IVR-Call-State-UDP-Reporting-VOS3000-IVR-Codec-Priority-VOS3000-IVR-Voicemail-Navigation-1.png?fit=1200%2C658&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-IVR-Callback-Timing-VOS3000-IVR-Call-State-UDP-Reporting-VOS3000-IVR-Codec-Priority-VOS3000-IVR-Voicemail-Navigation-1.png?fit=1200%2C658&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":3017,"url":"https:\/\/multahost.com\/blog\/vos3000-g729-negotiation-mode-fix\/","url_meta":{"origin":3494,"position":5},"title":"VOS3000 G729 Negotiation Mode: Reliable Fix for Codec Mismatch","author":"king","date":"April 18, 2026","format":false,"excerpt":"VOS3000 G729 negotiation mode fixes codec mismatch between G729 and G729a. Configure Auto\/G729\/G729a\/G729&G729a modes in routing gateway additional settings.","rel":"","context":"In &quot;VOS3000&quot;","block_context":{"text":"VOS3000","link":"https:\/\/multahost.com\/blog\/category\/vos3000\/"},"img":{"alt_text":"VOS3000 SIP Authentication, VOS3000 Domain Management, VOS3000 Call Failed Announcement, VOS3000 G729 Negotiation Mode, VOS3000 RTP Encryption","src":"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-SIP-Authentication-VOS3000-Domain-Management-VOS3000-Call-Failed-Announcement-VOS3000-G729-Negotiation-Mode-VOS3000-RTP-Encryption-4.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-SIP-Authentication-VOS3000-Domain-Management-VOS3000-Call-Failed-Announcement-VOS3000-G729-Negotiation-Mode-VOS3000-RTP-Encryption-4.png?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-SIP-Authentication-VOS3000-Domain-Management-VOS3000-Call-Failed-Announcement-VOS3000-G729-Negotiation-Mode-VOS3000-RTP-Encryption-4.png?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-SIP-Authentication-VOS3000-Domain-Management-VOS3000-Call-Failed-Announcement-VOS3000-G729-Negotiation-Mode-VOS3000-RTP-Encryption-4.png?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-SIP-Authentication-VOS3000-Domain-Management-VOS3000-Call-Failed-Announcement-VOS3000-G729-Negotiation-Mode-VOS3000-RTP-Encryption-4.png?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\/3494","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=3494"}],"version-history":[{"count":1,"href":"https:\/\/multahost.com\/blog\/wp-json\/wp\/v2\/posts\/3494\/revisions"}],"predecessor-version":[{"id":3517,"href":"https:\/\/multahost.com\/blog\/wp-json\/wp\/v2\/posts\/3494\/revisions\/3517"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/multahost.com\/blog\/wp-json\/wp\/v2\/media\/3459"}],"wp:attachment":[{"href":"https:\/\/multahost.com\/blog\/wp-json\/wp\/v2\/media?parent=3494"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/multahost.com\/blog\/wp-json\/wp\/v2\/categories?post=3494"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/multahost.com\/blog\/wp-json\/wp\/v2\/tags?post=3494"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}