VOS3000 parameter description, VOS3000 system parameter, VOS3000 data maintenance, VOS3000 data report, VOS3000 number management

VOS3000 Parameter Description: Complete Configuration Reference Guide Free

VOS3000 Parameter Description: Complete Configuration Reference Guide

VOS3000 parameter description is the most comprehensive technical reference available for VoIP system administrators who need to configure and optimize their softswitch installations. This complete configuration reference guide covers every single parameter available in VOS3000 version 2.1.9.07, organized into logical categories for easy navigation and practical implementation. Whether you are managing a small wholesale VoIP operation or a large-scale telecom infrastructure, understanding these parameters is essential for achieving optimal call quality, billing accuracy, and system reliability. Based on the official VOS3000 2.1.9.07 manual (Section 4.3.5, Pages 222-252), this guide provides detailed explanations of each parameter including default values, valid ranges, and practical usage scenarios.

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Table of Contents

๐Ÿ” What is VOS3000 Parameter Description

Reference: VOS3000 2.1.9.07 Manual, Section 4.3.5 (Pages 222-252)

The VOS3000 parameter description framework organizes all configuration settings into a hierarchical structure that reflects the functional architecture of the softswitch system. At the highest level, parameters are divided into three primary categories: VOS3000 server parameters, softswitch parameters (including H323, SIP, and system subcategories), and audio service parameters. Each category controls specific aspects of system behavior, and understanding these categories is crucial for effective system administration. The VOS3000 softswitch platform contains over 200 configurable parameters that control every aspect of system behavior, from billing precision and alarm thresholds to SIP timer values and media proxy settings.

๐Ÿ“Š VOS3000 Parameter Description Categories

๐Ÿ“ Category๐Ÿ“‹ Description๐Ÿ“– Manual Pages
VOS3000 ParametersServer-level parameters for billing, alarms, reports, security222-228
Softswitch H323 ParametersH.323 protocol settings for gateway communications229-230
Softswitch SIP ParametersSIP protocol settings including NAT, timers, authentication230-237
Softswitch System ParametersCore softswitch settings for media, calls, endpoints237-239
Audio Service ParametersIVR, voicemail, callback service settings239-241

โš™๏ธ How to Access VOS3000 Parameter Description Settings

Accessing the VOS3000 parameter description settings requires navigating through the VOS3000 client interface to the appropriate configuration menus. For server parameters, administrators should navigate to System Management, then select System Parameter to view and modify the parameter list. For softswitch parameters including H323, SIP, and system subcategories, the path is Operation Management followed by Softswitch Management, then Additional Settings, and finally System Parameter. Audio service parameters are accessed through the audio service configuration interface.

๐Ÿ“ Navigation Paths for Parameter Access

StepNavigation PathAction
1System ManagementExpand navigation tree
2System ParameterDouble-click to open parameter table
3Operation Management > Softswitch ManagementSelect softswitch node
4Additional SettingsRight-click โ†’ Additional settings
5System Parameter TabFind and modify parameters
6Apply ChangesClick OK to save modifications

๐Ÿ“‹ VOS3000 Server Parameters Complete List

Reference: VOS3000 2.1.9.07 Manual, Section 4.3.5.1 (Pages 222-228)

The VOS3000 parameter description for server parameters encompasses all configuration settings that control the core server functionality of the softswitch platform. These parameters determine how the server handles billing calculations, generates reports, manages alarms, interacts with databases, and enforces security policies. Server parameters are prefixed with “SERVER_” in the parameter name, making them easily identifiable in the configuration interface.

๐Ÿ”” Alarm Configuration Parameters in VOS3000

Alarm configuration parameters within the VOS3000 parameter description control how the system monitors and reports various operational conditions. These parameters define thresholds for generating alerts, specify notification methods, and configure alarm suppression settings. Proper configuration of alarm parameters ensures that administrators receive timely notifications of critical system conditions without being overwhelmed by excessive alerts.

โš™๏ธ Parameter Name๐Ÿ“Š Default๐Ÿ“ Description๐Ÿ“– Page
SERVER_ALARM_CUSTOMER_BALANCE_MAX_SIZE1000Number of accounts in Balance Alarm settings menu223
SERVER_ALARM_DATABASE_IGNORE_ERROR_CODEDatabase error codes to ignore without triggering warnings223
SERVER_ALARM_DISABLEOffOff enables alarm system, On disables all alarms223
SERVER_ALARM_E164SDefaultDefault E164 number for Alarm Management223
SERVER_ALARM_EMAILDefaultDefault email address for alarm notifications223
SERVER_ALARM_EMAIL_DELAY300Interval in seconds between email alarm notifications223
SERVER_ALARM_ENABLE_EMAILOffEnable email alarm notifications (On/Off)223
SERVER_ALARM_ENABLE_VOICEOffEnable voice call alarm notifications (On/Off)223

๐Ÿ’ฐ Billing System Parameters in VOS3000 Parameter Description

The billing system parameters form a critical component of the VOS3000 parameter description because they directly affect revenue calculation and financial accuracy. These parameters control billing precision, fee calculation methods, free call duration settings, and various billing behaviors that determine how calls are charged. Misconfiguration of billing parameters can result in revenue loss, customer disputes, or billing errors.

โš™๏ธ Parameter Name๐Ÿ“Š Default๐Ÿ“ Description๐Ÿ“– Page
SERVER_BILLING_FEE_PRECISION0.0000000Billing money accuracy precision (0-1000 decimal places)224
SERVER_BILLING_FEE_UNIT0.0000000Billing money unit for charge calculations (0-1000)224
SERVER_BILLING_FORWARD_PREFIXBilling prefix for Call Transfer scenarios224
SERVER_BILLING_FREE_E164SService numbers for free calls with no time limit224
SERVER_BILLING_FREE_TIME0Free duration in seconds to deduct from charged time224
SERVER_BILLING_GATEWAY_ROUTE_PREFIXRouting gateway additional prefix for billing224
SERVER_BILLING_HOLD_TIME_PRECISION1000Time precision in milliseconds for billing duration224
SERVER_BILLING_NO_CDR_E164SNumbers that will not create CDR records224
SERVER_BILLING_PREVENT_OVERDRAFT_ADVANCE_TIME1Account anti-overdraft advance minutes (1-15)224
SERVER_BILLING_PROFIT_CALCULATECall charges – Sub – Call expenseFormula for call profit calculation224

๐Ÿ“Š CDR and Reporting Parameters

Call Detail Record (CDR) and reporting parameters within the VOS3000 parameter description govern how call records are generated, stored, and processed for reporting purposes. These parameters determine CDR file formats, storage intervals, queue sizes, and automatic report generation settings. Proper configuration of CDR parameters is essential for maintaining accurate call records and enabling detailed traffic analysis.

โš™๏ธ Parameter Name๐Ÿ“Š Default๐Ÿ“ Description๐Ÿ“– Page
SERVER_CDR_FILE_WRITE_INTERVALNoneInterval in seconds for creating new CDR files (60-86400)225
SERVER_CDR_FILE_WRITE_MAX2048Maximum number of CDR files to retain (10-4096)225
SERVER_CDR_REAL_TIME_REPORT_SERVERAddress for real-time CDR reporting server225
SERVER_MAX_CDR_PENDING_LIST_LENGTH100000Maximum length of CDR processing queue (10000-100000)225
SERVER_QUERY_CDR_DENY_TIMEHours when CDR query is denied (e.g., 18,19,20,21)225
SERVER_QUERY_CDR_MAX_DAY_INTERVAL31Maximum days for CDR query interval225

๐Ÿ“ˆ Automatic Report Generation Parameters

The VOS3000 parameter description includes numerous parameters that control automatic report generation for business intelligence and operational analysis purposes. These reports are generated daily at approximately 1:00 AM and include revenue reports, gateway billing analysis, clearing reports, and various analytical reports.

โš™๏ธ Parameter Name๐Ÿ“Š Default๐Ÿ“ Report Generated
SERVER_REPORT_AGENT_INCOMEOnAgent Income Report
SERVER_REPORT_CLEARING_CUSTOMER_FEEOffClearing Account Details Report
SERVER_REPORT_CUSTOMER_FEEOnRevenue Details Report
SERVER_REPORT_GATEWAY_FEEOnGateway Bill Report
SERVER_REPORT_PHONE_FEEOnPhone Bill Report
SERVER_REPORT_GATEWAY_ROUTING_LOCATION_ASR_ACDOnRouting Gateway Area Analysis Report

๐Ÿ”’ Security and Authentication Parameters

Security parameters in the VOS3000 parameter description establish the foundational security posture of the softswitch system. These parameters control password policies, login attempt restrictions, session management, and various authentication behaviors that protect the system from unauthorized access. In today’s threat landscape where VoIP systems are frequent targets for fraud and abuse, proper configuration of security parameters is essential.

โš™๏ธ Parameter Name๐Ÿ“Š Default๐Ÿ“ Description๐Ÿ“– Page
SERVER_LOGIN_FAILED_DISABLE_TIME120Seconds to disable login after failed attempts (30-7200)226
SERVER_PASSWORD_LENGTH8Default minimum password length requirement226
SERVER_PASSWORD_TERMINAL_ADDITIONAL_CHARACTERSAdditional characters for phone/gateway random passwords226
SERVER_VERIFY_CLEARING_CUSTOMEROffVerify clearing account balance against minimum limit226
SERVER_VERIFY_CLEARING_CUSTOMER_REMAIN_MONEY_LIMIT0.0Clearing account minimum balance limit (0-10000000)226

๐Ÿ–ฅ๏ธ System Configuration Parameters

System configuration parameters in the VOS3000 parameter description control various operational aspects of the server including NTP time synchronization, display settings, database version management, and network configuration. These parameters establish the operational environment in which the softswitch functions.

โš™๏ธ Parameter Name๐Ÿ“Š Default๐Ÿ“ Description๐Ÿ“– Page
SERVER_NTP_SERVERtime-a.nist.govNetwork time server (SNTP) for system time sync227
SERVER_DATABASE_VERSIONCurrent database version identifier227
SERVER_DISPLAY_MONEY_PRECISION3Money display precision (e.g., 3 shows 1.000)227
SERVER_DNS_UPDATE_INTERVAL600DNS update interval in seconds for Domain Management227
SERVER_SOFTSWITCH_CLUSTERIP list of softswitch cluster nodes227
SERVER_QUERY_MAX_SIZE30000000Maximum data query limit in items227
SERVER_QUERY_ONE_PAGE_SIZE10000Number of data items per query page227
SERVER_TRACE_FILE_LENGTH40960Debug file size in KB227

๐Ÿ“ก Softswitch H323 Parameters in VOS3000 Parameter Description

Reference: VOS3000 2.1.9.07 Manual, Section 4.3.5.2 (Pages 229-230)

The H323 parameters within the VOS3000 parameter description control the behavior of H.323 protocol signaling for gateway communications. H.323 is an ITU-T standard protocol suite for multimedia communications over packet-based networks, and it remains widely deployed in enterprise and carrier VoIP environments despite the growing adoption of SIP.

โš™๏ธ Parameter Name๐Ÿ“Š Default๐Ÿ“ Description๐Ÿ“– Page
SS_H245_PORT_RANGE10000,39999H245 port range for media control channels229
SS_H323_DTMF_METHODH.245 alphanumericDefault DTMF transmission mode for H.323229
SS_H323_NUMBERING_PLANUnknownPlan(0)Default numbering plan in Routing Gateway H323229
SS_H323_NUMBER_TYPEUnknownType(0)Default number type in Routing Gateway H323229
SS_H323_TIMEOUT_ALERTING120Alerting timeout in seconds for Routing Gateway H323230
SS_H323_TIMEOUT_SETUP5Setup timeout in seconds for H.323 call establishment230

๐Ÿ“ž Softswitch SIP Parameters Complete Reference

Reference: VOS3000 2.1.9.07 Manual, Section 4.3.5.2 (Pages 230-237)

The SIP parameters represent one of the most extensive sections within the VOS3000 parameter description, reflecting the complexity and flexibility of the Session Initiation Protocol. SIP has become the dominant signaling protocol for VoIP communications, and VOS3000 provides comprehensive configuration options for controlling every aspect of SIP behavior including authentication, NAT traversal, session timers, and timeout values.

๐Ÿ”‘ SIP Authentication Parameters

โš™๏ธ Parameter Name๐Ÿ“Š Default๐Ÿ“ Description๐Ÿ“– Page
SS_SIP_AUTHENTICATION_CODESIP authentication code for gateway registration230
SS_SIP_AUTHENTICATION_REALMSIP authentication realm for digest authentication230

๐Ÿ“ก NAT Keep-Alive Parameters

NAT keep-alive parameters in the VOS3000 parameter description are critical for maintaining connectivity with endpoints behind NAT devices. These parameters control the message content, sending period, and batching behavior for UDP heartbeat messages that prevent NAT bindings from expiring.

โš™๏ธ Parameter Name๐Ÿ“Š Default๐Ÿ“ Range๐Ÿ“ Description
SS_SIP_NAT_KEEP_ALIVE_MESSAGEHELLOText stringContent of NAT keep-alive UDP packet (empty = disabled)
SS_SIP_NAT_KEEP_ALIVE_PERIOD3010-86400 secInterval between keep-alive transmissions
SS_SIP_NAT_KEEP_ALIVE_SEND_INTERVAL5001-10000 msDelay between individual keep-alive packets in batch
SS_SIP_NAT_KEEP_ALIVE_SEND_ONE_TIME30001-10000Number of keep-alive packets sent per batch cycle

โฑ๏ธ SIP Session Timer Parameters

Session timer parameters in the VOS3000 parameter description control the SIP session timer functionality that prevents “zombie calls” from persisting in the system. Based on RFC 4028, the session timer mechanism ensures that failed or hung calls are detected and cleaned up automatically.

โš™๏ธ Parameter Name๐Ÿ“Š Default๐Ÿ“ Range๐Ÿ“ Description
SS_SIP_SESSION_TTL60060-86400 secDetecting SIP connected status interval (Session-Expires)
SS_SIP_SESSION_UPDATE_SEGMENT22-10Divisor for refresh interval calculation (TTL/segment)
SS_SIP_SESSION_MIN_SE9090-3600 secMinimum session expires value per RFC 4028
SS_SIP_NO_TIMER_REINVITE_INTERVAL72000-86400 secMaximum call duration for non-timer endpoints

๐ŸŽ›๏ธ Softswitch System Parameters in VOS3000 Parameter Description

Reference: VOS3000 2.1.9.07 Manual, Section 4.3.5.2 (Pages 237-239)

Softswitch system parameters control core softswitch functionality including media handling, call processing, gateway management, and blacklist/whitelist behavior. These parameters affect how the softswitch processes calls and interacts with gateways and endpoints.

๐ŸŽฌ Media and Call Processing Parameters

โš™๏ธ Parameter Name๐Ÿ“Š Default๐Ÿ“ Description๐Ÿ“– Page
SS_MEDIA_PROXY_MODE0Media proxy mode (0=disabled, 1=enabled)237
SS_MEDIA_PROXY_PORT_RANGE40000,59999Port range for media proxy RTP traffic237
SS_MAX_CALL_DURATION0Maximum call duration in seconds (0=unlimited)237
SS_ENDPOINT_EXPIRE3600Terminal registration expiry time in seconds237
SS_GATEWAY_ASR_RESERVE_TIME600ASR reserve time for gateway in seconds238
SS_GATEWAY_ACD_RESERVE_TIME600ACD reserve time for gateway in seconds238

๐Ÿšซ Dynamic Black List Parameters

โš™๏ธ Parameter Name๐Ÿ“Š Default๐Ÿ“ Description
SS_BLACK_LIST_CALLER_MALICIOUS_CALL_LIMIT1000Max calls triggering malicious call blocking
SS_BLACK_LIST_CALLER_MALICIOUS_CALL_EXPIRE3600Duration for malicious call block in seconds
SS_BLACK_LIST_NO_ANSWER_LIMIT100Consecutive no-answer calls triggering block
SS_BLACK_LIST_NO_ANSWER_EXPIRE3600Duration for no-answer block in seconds

๐ŸŽต Audio Service Parameters in VOS3000 Parameter Description

Reference: VOS3000 2.1.9.07 Manual, Section 4.3.5.3 (Pages 239-241)

Audio service parameters control the IVR (Interactive Voice Response) system, voicemail functionality, callback services, and other value-added audio features in VOS3000. These parameters determine codec priorities, language settings, timeout values, and session behavior for audio services.

โš™๏ธ Parameter Name๐Ÿ“Š Default๐Ÿ“ Description๐Ÿ“– Page
IVR_CODEC_PRIORITYG.711A,G.711U,G.729,G.723Codec priority for IVR media239
IVR_DEFAULT_LANGUAGEenDefault language for IVR prompts239
IVR_MEDIA_CHECK_TIME_OUT3000Media check timeout in milliseconds240
IVR_RINGING_TIMEOUT60Ringing timeout in seconds240
IVR_SIP_SESSION_TTL600SIP session TTL for IVR calls240
IVR_VOICEMAIL_MAX_DURATION120Maximum voicemail duration in seconds241

โš™๏ธ VOS3000 Parameter Description Best Practices

Implementing effective VOS3000 parameter description management requires adherence to established best practices that minimize risk and ensure system stability. The following recommendations are derived from extensive deployment experience and reflect industry-standard approaches to configuration management.

๐Ÿ“‹ Change Management Recommendations

  • Document current settings: Before making any changes, record the current parameter value and description for rollback reference.
  • Research parameter function: Review the parameter description in the interface and consult the VOS3000 manual to fully understand the parameter’s purpose.
  • Test before production: Always test parameter changes in a non-production environment before applying to production systems.
  • Apply changes during maintenance windows: Plan parameter changes during periods when temporary service interruption is acceptable.
  • Verify after changes: Confirm that parameter changes produce the expected behavior and do not cause unintended side effects.

๐Ÿ”ง Parameter Optimization Tips

๐Ÿข Scenarioโฑ๏ธ SESSION_TTL๐Ÿ“ก NAT_PERIOD๐Ÿšซ MAX_DURATION
Standard VoIP Wholesale600 (10 min)30 sec0 (unlimited)
Call Center Operations900 (15 min)20 sec14400 (4 hrs)
Mobile/Unstable Networks300 (5 min)15 sec3600 (1 hr)
Enterprise PBX1200 (20 min)30 sec28800 (8 hrs)

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โ“ Frequently Asked Questions about VOS3000 Parameter Description

What is the most important VOS3000 parameter description for billing accuracy?

The SERVER_BILLING_FEE_PRECISION and SERVER_BILLING_FEE_UNIT parameters are critical for billing accuracy. These parameters control the decimal precision and billing unit for charge calculations. Configure these parameters according to your business requirements and regulatory requirements for billing precision.

How do I enable NAT keep-alive in VOS3000 parameter description?

To enable NAT keep-alive, set SS_SIP_NAT_KEEP_ALIVE_MESSAGE to a non-empty value (default is “HELLO”). If this parameter is empty, NAT keep-alive is disabled. Configure SS_SIP_NAT_KEEP_ALIVE_PERIOD to control the interval between keep-alive transmissions (default is 30 seconds).

What happens if I set SS_SIP_SESSION_TTL too low?

Setting SS_SIP_SESSION_TTL too low (below 90 seconds) may cause frequent session refresh messages, increasing network traffic and potentially causing call quality issues. The minimum recommended value is 90 seconds as specified in RFC 4028. Values below this may trigger “422 Session Interval Too Small” errors from endpoints.

How do I disable automatic report generation?

To disable automatic generation of specific reports, set the corresponding SERVER_REPORT_ parameter to “Off” in the System Parameter interface. For example, to disable the Agent Income Report, set SERVER_REPORT_AGENT_INCOME to “Off”. Disabled reports can still be generated manually through the client interface.

Can I use VOS3000 parameter description to limit maximum call duration?

Yes, use the SS_MAX_CALL_DURATION parameter to limit the maximum call duration for all calls. Set the value in seconds (0 means unlimited). This parameter is useful for preventing runaway calls and controlling costs. Individual accounts may have additional duration limits configured in their settings.

Where can I get help with VOS3000 parameter description configuration?

MultaHost provides comprehensive technical support for VOS3000 parameter description configuration. Our experienced team can assist with parameter selection, configuration best practices, and troubleshooting. For immediate assistance, contact us via WhatsApp at +8801911119966. Additional resources are available at vos3000.com/downloads.php.

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VOS3000 System Parameters & Timers: Important Guide

VOS3000 System Parameters & Timers: Important Guide

VOS3000 contains hundreds of configurable parameters that control every aspect of its operation โ€“ from SIP timers and H.323 settings to billing rules and alarm thresholds. Understanding these VOS3000 system parameters is essential for tuning performance, troubleshooting issues, and customizing the platform to your specific needs.

This comprehensive reference covers the most important parameters grouped by category, with explanations of what they do and when you might need to change them.

Where to Find VOS3000 System Parameters

VOS3000 parameters are spread across two main locations:

  • System Management > System Parameter โ€“ serverโ€‘level parameters (database, reports, passwords, etc.)
  • Operation Management > Softswitch Management > Additional Settings > System Parameter โ€“ softswitch runtime parameters (SIP, H.323, media, routing)

Changes to parameters take effect immediately โ€“ no service restart required in most cases.

VOS3000 Server Parameters (System Management)

These parameters control the VOS3000 server environment, database behavior, and reporting.

Parameter NameDefault ValueDescriptionWhen to Change
SERVER_BILLING_FEE_PRECISION0.0000000Number of decimal places for billing amounts.If you need more/less precision in call charges (e.g., 4 decimals for fractional cents).
SERVER_BILLING_HOLD_TIME_PRECISION1000Time rounding precision in milliseconds. E.g., 50 means round to nearest 50ms.Adjust to match your carrier’s billing increments (6 seconds = 6000).
SERVER_QUERY_ONE_PAGE_SIZE10000Number of records displayed per page in CDR queries.Increase if you want to see more records at once (may slow down browser).
SERVER_QUERY_CDR_MAX_DAY_INTERVAL31Maximum number of days allowed in a single CDR query.Increase for longer reports, but beware of performance impact.
SERVER_ALARM_EMAIL(empty)Email address for alarm notifications.Set to receive email alerts when alarms trigger.
SERVER_ALARM_ENABLE_EMAILOffEnable/disable email alarms.Turn On after configuring email settings.
SERVER_PASSWORD_LENGTH8Minimum password length for new users.Increase for better security (e.g., 12).
SERVER_PAY_DELAY_CUSTOMER_EXPIRE_DAY365Days added to account expiry after recharge.Adjust based on your recharge policies.
SERVER_REPORT_*VariousEnable/disable automatic generation of daily reports.Turn off reports you don’t need to save server resources.

Softswitch SIP Parameters (VOS3000 System Parameters)

These parameters control SIP signaling behavior and are critical for interoperability with carriers and devices.

Parameter NameDefault ValueDescriptionWhen to Change
SS_SIP_TIMEOUT_INVITE10Seconds to wait for a response to INVITE before trying next gateway.Increase if carriers are slow to respond; decrease to fail faster.
SS_SIP_TIMEOUT_RINGING120Seconds to wait for answer after receiving ringing (180).Adjust for markets where users take longer to answer.
SS_SIP_TIMEOUT_TRYING20Seconds to wait for 100 Trying after INVITE.Increase if carriers don’t send early progress.
SS_SIP_TIMEOUT_SESSION_PROGRESS20Seconds to wait for 183 Session Progress.Some carriers send 183 very late โ€“ increase if calls fail prematurely.
SS_SIP_TIMEOUT_SESSION_PROGRESS_SDP120Seconds to wait for 183 with SDP (early media).Increase if early media takes time to arrive.
SS_SIP_STOP_SWITCH_AFTER_SDPOnStop trying other gateways after receiving SDP (media negotiation started).Turn Off if you want to continue trying better gateways even after SDP received.
SS_SIP_RESEND_INTERVAL0.5,1,2,4,4,4,4,4,4,4Commaโ€‘separated retransmission intervals (seconds) for SIP messages.Customize for networks with high packet loss (longer intervals).
SS_SIP_SESSION_TTL600Session timer interval (seconds) for keeping calls alive.Shorter for aggressive deadโ€‘call detection; longer to reduce signaling.
SS_SIP_NO_TIMER_REINVITE_INTERVAL7200Maximum call duration (seconds) for nonโ€‘timerโ€‘aware SIP devices.Force hangup of very long calls to prevent billing errors.
SS_SIP_NAT_KEEP_ALIVE_PERIOD30Seconds between NAT keepโ€‘alive messages.Reduce if devices behind NAT drop pinholes quickly.

Softswitch H.323 Parameters (VOS3000 System Parameters)

For networks using H.323 gateways or terminals.

Parameter NameDefault ValueDescriptionWhen to Change
SS_H323_TIMEOUT_SETUP5Seconds to wait for Call Proceeding after Setup.Increase if H.323 gateways are slow.
SS_H323_TIMEOUT_CALLPROCEEDING20Seconds to wait for Alerting after Call Proceeding.Adjust based on typical answer times.
SS_H323_TIMEOUT_ALERTING120Seconds to wait for Connect after Alerting.Same as SIP ringing timeout.
SS_H323_TIMEOUT_CALLPROCEEDING_OLC20Seconds to wait for OLC (Open Logical Channel) after Call Proceeding.Increase if media negotiation is slow.
SS_H323_STOP_SWITCH_AFTER_OLCOffStop trying other gateways after OLC (media opened).Turn On if you want to lock the gateway once media starts.

Systemโ€‘Wide Softswitch Parameters

These affect overall call handling and routing logic.

Parameter NameDefault ValueDescriptionWhen to Change
SS_MAX_CALL_DURATIONNoneGlobal maximum call length in seconds.Set to prevent extremely long calls (e.g., 10800 for 3 hours).
SS_MEDIA_PROXY_MODEAutoMedia proxy decision: Auto, On, Off, Must On.Force On if you need recording or NAT traversal for all calls.
SS_MEDIA_PROXY_PORT_RANGE10000,39999RTP port range for media proxy.Adjust if you need to limit firewall rules.
SS_GATEWAY_ASR_CALCULATEOffEnable realโ€‘time ASR (Answer Seizure Ratio) calculation for routing.Turn On to use ASR as a routing metric.
SS_GATEWAY_ACD_CALCULATEOffEnable realโ€‘time ACD (Average Call Duration) calculation.Turn On to use ACD in routing decisions.
SS_GATEWAY_SWITCH_UNTIL_CONNECTOffContinue trying gateways until one answers (not just until ringing).Useful when carriers rarely answer but you want to try all options.
SS_REDIRECT_OFFLINE_PHONE_TO_GATEWAYOffIf a called phone is offline, try routing through gateways.Useful for hybrid networks where phones may not always register.
SS_ACCOUNT_INDICATION_METHODOffHow to warn of low balance: Off, Prompt balance, Prompt duration.Enable to play warnings to callers before cutoff.

Audio Service (IVR) Parameters

Controls for IVR, callback, and valueโ€‘added services.

Parameter NameDefault ValueDescriptionWhen to Change
IVR_RINGING_TIMEOUT120Seconds to wait for answer in IVR scenarios.Adjust for different user behavior.
IVR_SETUP_TIMEOUT20Seconds to wait for initial response.Increase if IVR connections are slow.
IVR_MEDIA_CHECK_TIMEOUT2Minutes of no media before hanging up.Reduce to free ports faster on dead calls.
IVR_CODEC_PRIORITYg729a,g729,g723,g711a,g711uPreferred codec order for IVR.Reorder based on your termination costs/quality.

Best Practices for Parameter Tuning – VOS3000 System Parameters

  • Change one parameter at a time and observe the effect.
  • Document your changes โ€“ keep a record of what you changed and why.
  • Test in a nonโ€‘production environment first if possible.
  • Be conservative with timeouts โ€“ too short causes failures, too long wastes resources.
  • Monitor call logs after changes to detect unintended consequences.

Frequently Asked Questions (VOS3000 System Parameters)

Do I need to restart VOS3000 after changing parameters?

No. VOS3000 reads parameters from the database in real time. Changes take effect immediately for new calls. Ongoing calls continue with the parameters they started with.

Can I break my system by changing a parameter?

Most parameters are safe to experiment with, but extreme values (e.g., setting timeouts to 0) can cause unexpected behavior. Always note the original value so you can revert if needed.

What’s the most important parameter for reducing call failures?

For SIP, start with SS_SIP_TIMEOUT_INVITE and SS_SIP_RESEND_INTERVAL. If carriers are slow to respond, increasing these can reduce “Response timeout” failures.

How do I enable NAT keepโ€‘alive for SIP devices?

Set SS_SIP_NAT_KEEP_ALIVE_PERIOD to 20โ€‘30 seconds and SS_SIP_NAT_KEEP_ALIVE_MESSAGE to “HELLO” or any string. The softswitch will send UDP packets to keep NAT bindings open.

What does “SS_MEDIAPROXYMODE = Auto” actually do?

Auto mode enables media proxy only when needed โ€“ e.g., when devices are behind different NATs, when encryption is required, or when a device explicitly requests it. This is the recommended setting for most deployments.

Conclusion

Mastering VOS3000 system parameters gives you fineโ€‘grained control over your softswitch. Use this reference as a starting point, experiment carefully, and always monitor the impact of your changes. With the right tuning, you can maximize call completion rates, improve voice quality, and optimize resource usage.

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Further Resources


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