{"id":1436,"date":"2026-04-27T15:36:54","date_gmt":"2026-04-27T15:36:54","guid":{"rendered":"https:\/\/www.vos3000.com\/blog\/?p=1436"},"modified":"2026-04-27T15:37:02","modified_gmt":"2026-04-27T15:37:02","slug":"vos3000-rtp-interrupt-detection","status":"publish","type":"post","link":"https:\/\/www.vos3000.com\/blog\/vos3000-rtp-interrupt-detection\/","title":{"rendered":"VOS3000 RTP Interrupt Detection Accurate Four-Mode Media Monitoring"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\" id=\"vos-3000-rtp-interrupt-detection-accurate-four-mode-media-monitoring\">VOS3000 RTP Interrupt Detection Accurate Four-Mode Media Monitoring<\/h1>\n\n\n\n<p>\ud83d\udce1 When a VoIP call is established and both parties are conversing, the media path is carrying RTP packets in both directions. But what happens when one direction stops \u2014 the RTP stream is interrupted while the SIP signaling remains active? The caller hears silence, but the call never hangs up. The VOS3000 <strong>RTP interrupt detection<\/strong> feature solves this problem by monitoring RTP packet flow and taking action when media is lost, ensuring that silent zombie calls do not consume gateway resources or confuse billing records. \ud83d\udd27<\/p>\n\n\n\n<p>\u2699\ufe0f According to the VOS3000 V2.1.9.07 Manual \u00a72.5.1.1 (page 32), the VOS3000 RTP interrupt detection offers four modes: None (disable detection), Server to Remote (detect audio sent from server to device), Remote to Server (detect audio sent from device to server), and Bidirection (detect both sides \u2014 if any one side has no audio, the call will be interrupted). Each mode provides a different level of monitoring granularity, allowing you to choose between passive observation and automatic call termination based on your deployment requirements. The VOS3000 RTP interrupt detection is a per-gateway setting configured in the Additional settings panel under Normal settings. \ud83d\udcca<\/p>\n\n\n\n<p>\ud83c\udfaf This guide provides a complete, manual-verified reference for all four VOS3000 RTP interrupt detection modes. All parameter definitions are sourced exclusively from the official VOS3000 V2.1.9.07 Manual \u00a72.5.1.1 (page 32). No fabricated values, no guesswork. For expert assistance, contact us on WhatsApp at <strong>+8801911119966<\/strong>. \ud83d\udcd8<\/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-rtp-interrupt-detection-accurate-four-mode-media-monitoring\">VOS3000 RTP Interrupt Detection Accurate Four-Mode Media Monitoring<\/a><ul><li><a href=\"#\ud83d\udd10-what-is-vos-3000-rtp-interrupt-detection\">\ud83d\udd10 What Is VOS 3000 RTP Interrupt Detection?<\/a><\/li><li><a href=\"#\ud83d\udccb-the-four-vos-3000-rtp-interrupt-detection-modes\">\ud83d\udccb The Four VOS 3000 RTP Interrupt Detection Modes<\/a><\/li><li><a href=\"#\ud83d\udcca-media-proxy-dependency-for-rtp-interrupt-detection\">\ud83d\udcca Media Proxy Dependency for RTP Interrupt Detection<\/a><\/li><li><a href=\"#\ud83d\udd04-direction-monitoring-explained\">\ud83d\udd04 Direction Monitoring Explained<\/a><\/li><li><a href=\"#\ud83d\udcca-vos-3000-rtp-interrupt-detection-mode-comparison-by-deployment\">\ud83d\udcca VOS 3000 RTP Interrupt Detection Mode Comparison by Deployment<\/a><\/li><li><a href=\"#\ud83d\udee1\ufe0f-common-vos-3000-rtp-interrupt-detection-problems-and-solutions\">\ud83d\udee1\ufe0f Common VOS 3000 RTP Interrupt Detection Problems and Solutions<\/a><ul><li><a href=\"#\u274c-problem-1-calls-being-terminated-prematurely\">\u274c Problem 1: Calls Being Terminated Prematurely<\/a><\/li><li><a href=\"#\u274c-problem-2-rtp-interrupt-detection-not-working\">\u274c Problem 2: RTP Interrupt Detection Not Working<\/a><\/li><li><a href=\"#\u274c-problem-3-one-way-audio-not-detected\">\u274c Problem 3: One-Way Audio Not Detected<\/a><\/li><\/ul><\/li><li><a href=\"#\ud83d\udca1-vos-3000-rtp-interrupt-detection-best-practices\">\ud83d\udca1 VOSS3000 RTP Interrupt Detection Best Practices<\/a><\/li><li><a href=\"#\ud83d\udccb-vos-3000-rtp-interrupt-detection-quick-decision-table\">\ud83d\udccb VOSS 3000 RTP Interrupt Detection Quick Decision Table<\/a><\/li><li><a href=\"#\u2753-frequently-asked-questions\">\u2753 Frequently Asked Questions<\/a><ul><li><a href=\"#\u2753-what-is-the-default-vos-3000-rtp-interrupt-detection-setting\">\u2753 What is the default VOS3000 RTP interrupt detection setting?<\/a><\/li><li><a href=\"#\u2753-does-vos-3000-rtp-interrupt-detection-work-without-media-proxy\">\u2753 Does VOS3000 RTP interrupt detection work without media proxy?<\/a><\/li><li><a href=\"#\u2753-what-is-the-difference-between-bidirection-and-single-direction-detection\">\u2753 What is the difference between Bidirection and single-direction detection?<\/a><\/li><li><a href=\"#\u2753-will-rtp-interrupt-detection-terminate-calls-during-temporary-network-congestion\">\u2753 Will RTP interrupt detection terminate calls during temporary network congestion?<\/a><\/li><li><a href=\"#\u2753-can-i-set-different-rtp-interrupt-detection-modes-on-different-gateways\">\u2753 Can I set different RTP interrupt detection modes on different gateways?<\/a><\/li><li><a href=\"#\u2753-how-does-rtp-interrupt-detection-interact-with-gateway-failover\">\u2753 How does RTP interrupt detection interact with gateway failover?<\/a><\/li><\/ul><\/li><li><a href=\"#\ud83d\udcde-need-expert-help-with-vos-3000-rtp-interrupt-detection\">\ud83d\udcde Need Expert Help with VOS 3000 RTP Interrupt Detection?<\/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\udd10-what-is-vos-3000-rtp-interrupt-detection\">\ud83d\udd10 What Is VOS 3000 RTP Interrupt Detection?<\/h2>\n\n\n\n<p>\ud83d\udccb The <strong>VOS3000 RTP interrupt detection<\/strong> is a per-gateway feature that monitors RTP media packet flow during active calls and takes action when the RTP stream is interrupted. It is configured in the Routing Gateway Additional settings &gt; Normal panel, in the &#8220;RTP interrupt detection&#8221; dropdown. The VOS3000 RTP interrupt detection requires the media proxy to be enabled for the call, as the softswitch can only observe RTP packets when it is proxying the media stream.<\/p>\n\n\n\n<p>\ud83d\udca1 <strong>Key characteristics of RTP Interrupt Detection:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udce1 <strong>Configuration location:<\/strong> Routing gateway > Additional settings > Normal > RTP interrupt detection<\/li>\n\n\n\n<li>\ud83d\udccb <strong>Per-gateway scope:<\/strong> Each routing gateway has its own VOS3000 RTP interrupt detection setting<\/li>\n\n\n\n<li>\ud83d\udd04 <strong>Four modes:<\/strong> None, Server to Remote, Remote to Server, Bidirection<\/li>\n\n\n\n<li>\ud83d\udd27 <strong>Prerequisite:<\/strong> Media proxy must be enabled (Auto, On, or Must On) for the VOS3000 RTP interrupt detection to function<\/li>\n\n\n\n<li>\ud83d\udcca <strong>Action on detection:<\/strong> The call is interrupted (terminated) when RTP loss is detected in the monitored direction<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udccb-the-four-vos-3000-rtp-interrupt-detection-modes\">\ud83d\udccb The Four VOS 3000 RTP Interrupt Detection Modes<\/h2>\n\n\n\n<p>\ud83d\udcca The VOS3000 V2.1.9.07 Manual \u00a72.5.1.1 (page 32) defines four modes for the VOS3000 RTP interrupt detection. Each mode determines which RTP direction is monitored and what action is taken when an interruption is detected:<\/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\">Mode<\/th><th class=\"has-text-align-left\" data-align=\"left\">Description (Manual)<\/th><th class=\"has-text-align-left\" data-align=\"left\">What Is Monitored<\/th><th class=\"has-text-align-left\" data-align=\"left\">When Call Is Interrupted<\/th><\/tr><tr><td>\ud83d\udeab None<\/td><td>Disable detection<\/td><td>No RTP monitoring<\/td><td>Never \u2014 RTP interruptions are ignored<\/td><\/tr><tr><td>\ud83d\udce4 Server to Remote<\/td><td>Detect audio sent from server to device<\/td><td>Outbound RTP: VOS3000 server \u2192 gateway device<\/td><td>When server-to-device RTP stops flowing<\/td><\/tr><tr><td>\ud83d\udce5 Remote to Server<\/td><td>Detect audio sent from device to server<\/td><td>Inbound RTP: gateway device \u2192 VOS3000 server<\/td><td>When device-to-server RTP stops flowing<\/td><\/tr><tr><td>\ud83d\udd04 Bidirection<\/td><td>Detect both sides, if any one side no audio, the call will be interrupt<\/td><td>Both directions simultaneously<\/td><td>When RTP stops in EITHER direction<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\ud83d\udca1 <strong>Critical manual note:<\/strong> The Bidirection mode description in the VOS3000 V2.1.9.07 Manual is explicit: &#8220;if any one side no audio, the call will be interrupt.&#8221; This means that losing RTP in just one direction is sufficient to trigger call interruption. This is the most aggressive VOS3000 RTP interrupt detection mode and provides the most comprehensive media monitoring, but it may also terminate calls prematurely in environments where temporary RTP gaps are normal (such as satellite links with variable latency).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcca-media-proxy-dependency-for-rtp-interrupt-detection\">\ud83d\udcca Media Proxy Dependency for RTP Interrupt Detection<\/h2>\n\n\n\n<p>\ud83d\udd17 The VOS3000 RTP interrupt detection requires the media proxy to be active for the call. Without media proxy, the softswitch does not observe the RTP stream and cannot detect interruptions. The VOS3000 RTP interrupt detection is fundamentally dependent on the media proxy configuration.<\/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\">Media Proxy Mode<\/th><th class=\"has-text-align-left\" data-align=\"left\">RTP Interrupt Detection Effective?<\/th><th class=\"has-text-align-left\" data-align=\"left\">Implication for VOS3000 RTP Interrupt Detection<\/th><\/tr><tr><td>Auto (default)<\/td><td>\u2705 Yes \u2014 when proxy is activated<\/td><td>VOS3000 RTP interrupt detection works for proxied calls; direct-RTP calls bypass monitoring<\/td><\/tr><tr><td>On \/ Must On<\/td><td>\u2705 Yes \u2014 all calls proxied<\/td><td>VOS3000 RTP interrupt detection monitors every call through this gateway<\/td><\/tr><tr><td>Off<\/td><td>\u274c No \u2014 no RTP observation<\/td><td>VOS3000 RTP interrupt detection has no effect \u2014 cannot observe RTP without proxy<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\ud83d\udcca <strong>Configuration recommendation:<\/strong> For the VOS3000 RTP interrupt detection to function reliably, set the media proxy to &#8220;Auto&#8221; or &#8220;On&#8221; for gateways where media monitoring is required. When media proxy is &#8220;Off,&#8221; the VOS3000 RTP interrupt detection parameter exists in the configuration but has no functional effect because the softswitch never sees the RTP packets. For comprehensive media proxy setup, see our <a href=\"https:\/\/multahost.com\/blog\/vos3000-rtp-media\/\" target=\"_blank\" rel=\"noopener\">VOS3000 RTP media<\/a> guide.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udd04-direction-monitoring-explained\">\ud83d\udd04 Direction Monitoring Explained<\/h2>\n\n\n\n<p>\ud83d\udce1 Understanding the directional terminology in the VOS3000 RTP interrupt detection is essential for correct configuration. The terms &#8220;Server to Remote&#8221; and &#8220;Remote to Server&#8221; refer to the direction of RTP packet flow relative to the VOS3000 softswitch:<\/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\">Direction<\/th><th class=\"has-text-align-left\" data-align=\"left\">RTP Flow<\/th><th class=\"has-text-align-left\" data-align=\"left\">What Interruption Indicates<\/th><th class=\"has-text-align-left\" data-align=\"left\">Use Case<\/th><\/tr><tr><td>\ud83d\udce4 Server to Remote<\/td><td>VOS3000 \u2192 Gateway device (outbound media)<\/td><td>The originating side stopped sending audio \u2014 caller may have gone silent or network issue on originating side<\/td><td>Monitor whether the calling party&#8217;s audio reaches the gateway<\/td><\/tr><tr><td>\ud83d\udce5 Remote to Server<\/td><td>Gateway device \u2192 VOS3000 (inbound media)<\/td><td>The gateway stopped sending audio \u2014 gateway or downstream network issue<\/td><td>Monitor whether the gateway&#8217;s audio reaches VOS3000<\/td><\/tr><tr><td>\ud83d\udd04 Bidirection<\/td><td>Both directions<\/td><td>Either side stopped \u2014 comprehensive media loss detection<\/td><td>Maximum protection \u2014 detects any RTP interruption regardless of direction<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\ud83d\udca1 <strong>Direction selection tip:<\/strong> Choose &#8220;Server to Remote&#8221; when you want to detect if the calling party&#8217;s audio stops reaching the gateway. Choose &#8220;Remote to Server&#8221; when you want to detect if the gateway&#8217;s audio stops reaching VOS3000. Choose &#8220;Bidirection&#8221; for comprehensive VOS3000 RTP interrupt detection that catches media loss in either direction. For most production deployments, Bidirection provides the most complete monitoring, but it may be too aggressive for networks with occasional RTP gaps.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcca-vos-3000-rtp-interrupt-detection-mode-comparison-by-deployment\">\ud83d\udcca VOS 3000 RTP Interrupt Detection Mode Comparison by Deployment<\/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\">Deployment<\/th><th class=\"has-text-align-left\" data-align=\"left\">Recommended Mode<\/th><th class=\"has-text-align-left\" data-align=\"left\">Rationale<\/th><\/tr><tr><td>\ud83c\udfe2 Retail VoIP (reliable networks)<\/td><td>Bidirection<\/td><td>Clean up zombie calls quickly \u2014 reliable network means RTP gaps indicate real problems<\/td><\/tr><tr><td>\ud83d\udd04 Wholesale termination<\/td><td>Remote to Server<\/td><td>Focus on whether the downstream carrier is delivering audio \u2014 the most important quality indicator<\/td><\/tr><tr><td>\ud83d\udce1 Satellite \/ high-latency links<\/td><td>None or Server to Remote<\/td><td>Avoid false positives from temporary RTP gaps on unreliable links<\/td><\/tr><tr><td>\ud83d\udcb3 Calling card \/ IVR services<\/td><td>Bidirection<\/td><td>Zombie calls waste IVR resources and confuse billing \u2014 aggressive cleanup is essential<\/td><\/tr><tr><td>\ud83e\uddea Testing \/ lab environment<\/td><td>None<\/td><td>Disable VOS3000 RTP interrupt detection during testing to avoid premature call termination<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udee1\ufe0f-common-vos-3000-rtp-interrupt-detection-problems-and-solutions\">\ud83d\udee1\ufe0f Common VOS 3000 RTP Interrupt Detection Problems and Solutions<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u274c-problem-1-calls-being-terminated-prematurely\">\u274c Problem 1: Calls Being Terminated Prematurely<\/h3>\n\n\n\n<p>\ud83d\udd0d <strong>Symptom:<\/strong> Active calls with normal conversation are being terminated unexpectedly, with CDR records indicating RTP interrupt detection as the cause.<\/p>\n\n\n\n<p>\ud83d\udca1 <strong>Cause:<\/strong> The VOS3000 RTP interrupt detection is set to Bidirection mode on a network with occasional RTP packet gaps. Temporary network congestion or jitter buffers can cause brief RTP interruptions that trigger the detection and terminate the call.<\/p>\n\n\n\n<p>\u2705 <strong>Solutions:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udd27 Change the VOS3000 RTP interrupt detection to a less aggressive mode \u2014 Server to Remote or Remote to Server instead of Bidirection<\/li>\n\n\n\n<li>\ud83d\udcca If both directions are needed, consider disabling VOS3000 RTP interrupt detection and using <a href=\"https:\/\/multahost.com\/blog\/vos3000-monitoring-alarms-statistics\/\" target=\"_blank\" rel=\"noopener\">monitoring alarms<\/a> instead for passive observation<\/li>\n\n\n\n<li>\ud83d\udccb Investigate network quality issues causing the RTP gaps \u2014 resolve the root cause rather than adjusting the detection threshold<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u274c-problem-2-rtp-interrupt-detection-not-working\">\u274c Problem 2: RTP Interrupt Detection Not Working<\/h3>\n\n\n\n<p>\ud83d\udd0d <strong>Symptom:<\/strong> The VOS3000 RTP interrupt detection is configured to Server to Remote or Bidirection, but calls with no audio continue without being terminated.<\/p>\n\n\n\n<p>\ud83d\udca1 <strong>Cause:<\/strong> The media proxy is not enabled for the affected calls. Without media proxy, VOS3000 cannot observe RTP packets and the VOS3000 RTP interrupt detection has no effect.<\/p>\n\n\n\n<p>\u2705 <strong>Solutions:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udd27 Verify the media proxy setting for the routing gateway \u2014 must be Auto, On, or Must On<\/li>\n\n\n\n<li>\ud83d\udcca Check if specific calls are bypassing the media proxy due to codec negotiation or NAT configuration<\/li>\n\n\n\n<li>\ud83d\udccb Ensure the <a href=\"https:\/\/multahost.com\/blog\/vos3000-rtp-media\/\" target=\"_blank\" rel=\"noopener\">RTP media proxy<\/a> is functioning correctly for all calls through this gateway<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u274c-problem-3-one-way-audio-not-detected\">\u274c Problem 3: One-Way Audio Not Detected<\/h3>\n\n\n\n<p>\ud83d\udd0d <strong>Symptom:<\/strong> One-way audio occurs on calls through a gateway with VOS3000 RTP interrupt detection enabled, but the call is not terminated \u2014 the detection fails to catch the media loss.<\/p>\n\n\n\n<p>\ud83d\udca1 <strong>Cause:<\/strong> The VOS3000 RTP interrupt detection mode is set to monitor only one direction (e.g., Server to Remote), but the audio loss is occurring in the opposite direction (Remote to Server). The unmonitored direction is not checked.<\/p>\n\n\n\n<p>\u2705 <strong>Solutions:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udd27 Change the VOS3000 RTP interrupt detection to Bidirection mode to monitor both RTP directions<\/li>\n\n\n\n<li>\ud83d\udcca Analyze CDR records to determine which direction typically loses audio \u2014 adjust the VOS3000 RTP interrupt detection mode accordingly<\/li>\n\n\n\n<li>\ud83d\udccb Resolve the underlying <a href=\"https:\/\/multahost.com\/blog\/vos3000-dialer-call-test-no-voice-one-way-audio-vos3000-pin-call-no-audio\/\" target=\"_blank\" rel=\"noopener\">one-way audio<\/a> issue rather than relying solely on detection<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udca1-vos-3000-rtp-interrupt-detection-best-practices\">\ud83d\udca1 VOSS3000 RTP Interrupt Detection Best Practices<\/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\">Best Practice<\/th><th class=\"has-text-align-left\" data-align=\"left\">Recommendation<\/th><th class=\"has-text-align-left\" data-align=\"left\">Reason<\/th><\/tr><tr><td>\ud83d\udce1 Enable media proxy first<\/td><td>Set media proxy to Auto or On before configuring the VOS3000 RTP interrupt detection<\/td><td>\ud83d\udd27 VOS3000 RTP interrupt detection cannot function without media proxy observing RTP packets<\/td><\/tr><tr><td>\ud83d\udd04 Use Bidirection for clean networks<\/td><td>Enable Bidirection mode when network quality is reliable<\/td><td>\ud83d\udcca Most comprehensive VOS3000 RTP interrupt detection \u2014 catches media loss in either direction<\/td><\/tr><tr><td>\u26a0\ufe0f Be cautious on unstable links<\/td><td>Use None or single-direction detection on satellite or high-jitter links<\/td><td>\ud83d\udccb Prevents false-positive call terminations from temporary RTP gaps<\/td><\/tr><tr><td>\ud83d\udcca Monitor CDR after enabling<\/td><td>Check <a href=\"https:\/\/multahost.com\/blog\/vos3000-call-end-reasons\/\" target=\"_blank\" rel=\"noopener\">call end reasons<\/a> in CDR after deploying the VOS3000 RTP interrupt detection<\/td><td>\ud83d\udcc8 Verifies detection is working correctly and not causing premature terminations<\/td><\/tr><tr><td>\ud83d\udcde Pair with RTP lock-in<\/td><td>Keep SS_GATEWAY_SWITCH_STOP_AFTER_RTP_START = On alongside the VOS3000 RTP interrupt detection<\/td><td>\ud83d\udee1\ufe0f RTP lock-in prevents switching after media starts; VOS3000 RTP interrupt detection monitors for media loss<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\ud83d\udcac Need VOS3000 RTP detection help? <a href=\"https:\/\/wa.me\/8801911119966\" target=\"_blank\" rel=\"noopener\">WhatsApp +8801911119966<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udccb-vos-3000-rtp-interrupt-detection-quick-decision-table\">\ud83d\udccb VOSS 3000 RTP Interrupt Detection Quick Decision Table<\/h2>\n\n\n\n<p>\ud83c\udfaf Use this decision table to select the correct VOS3000 RTP interrupt detection mode for your deployment scenario:<\/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\">Your Requirement<\/th><th class=\"has-text-align-left\" data-align=\"left\">Recommended Mode<\/th><th class=\"has-text-align-left\" data-align=\"left\">Reason<\/th><\/tr><tr><td>I want to monitor for audio loss without disconnecting calls<\/td><td>Server to remote or Remote to server<\/td><td>Detects one-way audio and reports without terminating the call<\/td><\/tr><tr><td>I need to automatically hang up calls with no audio<\/td><td>Bidirection<\/td><td>Detects loss in both directions and terminates dead calls automatically<\/td><\/tr><tr><td>My gateway reports false RTP interrupts frequently<\/td><td>None<\/td><td>Disables detection to prevent false positives from unreliable gateways<\/td><\/tr><\/tbody><\/table><\/figure>\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-the-default-vos-3000-rtp-interrupt-detection-setting\">\u2753 What is the default VOS3000 RTP interrupt detection setting?<\/h3>\n\n\n\n<p>\ud83d\udd27 The default VOS3000 RTP interrupt detection setting depends on the gateway configuration. For new routing gateways, the default is typically &#8220;None&#8221; (detection disabled), meaning the softswitch does not monitor RTP packet flow for interruptions. You must explicitly configure the VOS3000 RTP interrupt detection to one of the active modes (Server to Remote, Remote to Server, or Bidirection) to enable media monitoring for that gateway. The VOS3000 RTP interrupt detection is a per-gateway setting, so you can enable different modes on different gateways based on their network characteristics.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u2753-does-vos-3000-rtp-interrupt-detection-work-without-media-proxy\">\u2753 Does VOS3000 RTP interrupt detection work without media proxy?<\/h3>\n\n\n\n<p>\ud83d\udce1 No, the VOS3000 RTP interrupt detection requires the media proxy to be active for the call. Without media proxy, VOS3000 does not see the RTP packets flowing between the caller and the gateway, so it cannot detect when the RTP stream is interrupted. The VOS3000 RTP interrupt detection is fundamentally dependent on the media proxy&#8217;s ability to observe and relay RTP media packets. If the media proxy is set to &#8220;Off,&#8221; the VOS3000 RTP interrupt detection parameter exists in the gateway configuration but has no functional effect.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u2753-what-is-the-difference-between-bidirection-and-single-direction-detection\">\u2753 What is the difference between Bidirection and single-direction detection?<\/h3>\n\n\n\n<p>\ud83d\udd04 The key difference is the scope of monitoring. &#8220;Server to Remote&#8221; only monitors the outbound RTP direction (VOS3000 \u2192 gateway device). &#8220;Remote to Server&#8221; only monitors the inbound RTP direction (gateway device \u2192 VOS3000). &#8220;Bidirection&#8221; monitors both directions simultaneously \u2014 according to the manual, &#8220;if any one side no audio, the call will be interrupt.&#8221; The VOS3000 RTP interrupt detection in Bidirection mode provides the most comprehensive monitoring but is also the most aggressive, as it will terminate the call if RTP stops in either direction. Single-direction detection is more tolerant of one-way RTP gaps.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u2753-will-rtp-interrupt-detection-terminate-calls-during-temporary-network-congestion\">\u2753 Will RTP interrupt detection terminate calls during temporary network congestion?<\/h3>\n\n\n\n<p>\u26a0\ufe0f Yes, the VOS3000 RTP interrupt detection can terminate calls during temporary network congestion if the RTP gap exceeds the detection threshold. This is why the VOS3000 RTP interrupt detection should be used cautiously on networks with variable quality. For reliable, low-latency networks, Bidirection mode works well. For networks prone to temporary congestion or jitter, consider using &#8220;Server to Remote&#8221; or &#8220;None&#8221; mode, and instead rely on <a href=\"https:\/\/multahost.com\/blog\/vos3000-asr-acd-analysis\/\" target=\"_blank\" rel=\"noopener\">ASR ACD analysis<\/a> and quality monitoring to detect media problems without automatically terminating calls.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u2753-can-i-set-different-rtp-interrupt-detection-modes-on-different-gateways\">\u2753 Can I set different RTP interrupt detection modes on different gateways?<\/h3>\n\n\n\n<p>\ud83d\udd27 Yes, the VOS3000 RTP interrupt detection is configured per-gateway. Each routing gateway can have its own VOS3000 RTP interrupt detection mode. This means you can set Bidirection mode on a gateway connected to a reliable carrier, Server to Remote on a gateway with occasional upstream issues, and None on a gateway connected through a satellite link. This per-gateway flexibility in the VOS3000 RTP interrupt detection system allows you to tailor media monitoring to the specific network conditions of each gateway.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u2753-how-does-rtp-interrupt-detection-interact-with-gateway-failover\">\u2753 How does RTP interrupt detection interact with gateway failover?<\/h3>\n\n\n\n<p>\ud83d\udd04 The VOS3000 RTP interrupt detection and gateway failover operate at different levels. The VOS3000 RTP interrupt detection monitors media flow on an established call and terminates it if RTP is lost. Gateway failover (controlled by SS_GATEWAY_SWITCH_LIMIT and related parameters) handles the pre-connect phase where VOS3000 tries alternative gateways when the initial attempt fails. Once a call is connected and RTP is flowing, the VOS3000 RTP interrupt detection takes over to monitor media health. If the VOS3000 RTP interrupt detection terminates the call due to RTP loss, no further failover occurs \u2014 the call is ended, not retried. For failover configuration, see our <a href=\"https:\/\/multahost.com\/blog\/vos3000-vendor-failover-setup\/\" target=\"_blank\" rel=\"noopener\">vendor failover setup<\/a> guide. Need help? Contact us on <a href=\"https:\/\/wa.me\/8801911119966\" target=\"_blank\" rel=\"noopener\">WhatsApp at +8801911119966<\/a>. \ud83d\udcf1<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcde-need-expert-help-with-vos-3000-rtp-interrupt-detection\">\ud83d\udcde Need Expert Help with VOS 3000 RTP Interrupt Detection?<\/h2>\n\n\n\n<p>\ud83d\udd27 Proper VOS3000 RTP interrupt detection configuration is essential for preventing zombie calls, conserving gateway resources, and maintaining accurate billing records. The VOS3000 RTP interrupt detection system with its four modes provides the flexibility to match monitoring intensity to network reliability. Whether you are troubleshooting one-way audio issues, configuring media monitoring for the first time, or balancing detection sensitivity against false positives on unreliable links, expert guidance ensures your VOS3000 RTP interrupt detection delivers the right level of protection. \ud83d\udce1<\/p>\n\n\n\n<p>\ud83d\udcac <strong>WhatsApp:<\/strong> <a href=\"https:\/\/wa.me\/8801911119966\" target=\"_blank\" rel=\"noopener\">+8801911119966<\/a> \u2014 Get immediate assistance with VOS3000 RTP interrupt detection configuration, VOS3000 RTP interrupt detection troubleshooting, media proxy setup, and one-way audio resolution. Our team specializes in VOS3000 call quality management, media monitoring, and carrier-grade VoIP deployment. \ud83d\udd27<\/p>\n\n\n\n<p>\ud83d\udd17 Explore related VOS3000 media and call quality guides:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/multahost.com\/blog\/vos3000-rtp-media\/\" target=\"_blank\" rel=\"noopener\">VOS3000 RTP Media<\/a> \u2014 Complete media proxy and RTP configuration guide<\/li>\n\n\n\n<li><a href=\"https:\/\/multahost.com\/blog\/vos3000-dialer-call-test-no-voice-one-way-audio-vos3000-pin-call-no-audio\/\" target=\"_blank\" rel=\"noopener\">VOS3000 One-Way Audio Fix<\/a> \u2014 Troubleshooting one-way audio problems<\/li>\n\n\n\n<li><a href=\"https:\/\/multahost.com\/blog\/vos3000-vendor-failover-setup\/\" target=\"_blank\" rel=\"noopener\">VOS3000 Vendor Failover Setup<\/a> \u2014 Complete failover configuration guide<\/li>\n\n\n\n<li><a href=\"https:\/\/multahost.com\/blog\/vos3000-gateway-configuration-routing-mapping\/\" target=\"_blank\" rel=\"noopener\">VOS3000 Gateway Configuration Routing Mapping<\/a> \u2014 Gateway routing and mapping setup<\/li>\n\n\n\n<li><a href=\"https:\/\/multahost.com\/blog\/vos3000-call-end-reasons\/\" target=\"_blank\" rel=\"noopener\">VOS3000 Call End Reasons<\/a> \u2014 Understanding call termination reasons<\/li>\n\n\n\n<li><a href=\"https:\/\/multahost.com\/blog\/vos3000-system-parameters\/\" target=\"_blank\" rel=\"noopener\">VOS3000 System Parameters<\/a> \u2014 Complete system parameter reference<\/li>\n<\/ul>\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\">www.vos3000.com<\/a><br>\ud83c\udf10 <strong>Blog:<\/strong> <a href=\"https:\/\/multahost.com\/blog\" target=\"_blank\" rel=\"noopener\">multahost.com\/blog<\/a><br>\ud83d\udce5 <strong>Downloads:<\/strong> <a href=\"https:\/\/www.vos3000.com\/downloads.php\">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 decoding=\"async\" src=\"https:\/\/www.vos3000.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-RTP-Lock-In-VOS3000-Aggressive-Gateway-Failover-768x1024.png\" alt=\"VOS3000 Gateway Switch Limit, VOS3000 RTP Lock-In, VOS3000 Aggressive Gateway Failover, VOS3000 Busy Stop Switch, VOS3000 real-time gateway ASR, VOS3000 ASR Cost Routing, VOS3000 Prefix Mode Extension, VOS3000 Period Capacity Configuration, VOS3000 Period Dial Plan, VOS3000 RTP Interrupt Detection, VOS3000 Lowest Profit Rate Limit, VOS3000 Max Minute Rate Cap, VOS3000 Sort Lowest Rate Per Second, VOS3000 Check Rate Before Routing, VOS3000 Sort by Lowest Rate, VOS3000 Bilateral Reconciliation, VOS3000 SIP OPTIONS Online Check, VOS3000 T38 Fax Over IP, VOS3000 G729 Annex B Silence, VOS3000 Gateway Group Reserved Lines, VOS3000 Auxiliary Ring Tone\" style=\"\"><\/td><td><img decoding=\"async\" src=\"https:\/\/www.vos3000.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-RTP-Lock-In-VOS3000-Aggressive-Gateway-Failover-768x1024.png\" alt=\"VOS3000 Gateway Switch Limit, VOS3000 RTP Lock-In, VOS3000 Aggressive Gateway Failover, VOS3000 Busy Stop Switch, VOS3000 real-time gateway ASR, VOS3000 ASR Cost Routing, VOS3000 Prefix Mode Extension, VOS3000 Period Capacity Configuration, VOS3000 Period Dial Plan, VOS3000 RTP Interrupt Detection, VOS3000 Lowest Profit Rate Limit, VOS3000 Max Minute Rate Cap, VOS3000 Sort Lowest Rate Per Second, VOS3000 Check Rate Before Routing, VOS3000 Sort by Lowest Rate, VOS3000 Bilateral Reconciliation, VOS3000 SIP OPTIONS Online Check, VOS3000 T38 Fax Over IP, VOS3000 G729 Annex B Silence, VOS3000 Gateway Group Reserved Lines, VOS3000 Auxiliary Ring Tone\" style=\"\"><\/td><td><img decoding=\"async\" src=\"https:\/\/www.vos3000.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-RTP-Lock-In-VOS3000-Aggressive-Gateway-Failover-768x1024.png\" alt=\"VOS3000 Gateway Switch Limit, VOS3000 RTP Lock-In, VOS3000 Aggressive Gateway Failover, VOS3000 Busy Stop Switch, VOS3000 real-time gateway ASR, VOS3000 ASR Cost Routing, VOS3000 Prefix Mode Extension, VOS3000 Period Capacity Configuration, VOS3000 Period Dial Plan, VOS3000 RTP Interrupt Detection, VOS3000 Lowest Profit Rate Limit, VOS3000 Max Minute Rate Cap, VOS3000 Sort Lowest Rate Per Second, VOS3000 Check Rate Before Routing, VOS3000 Sort by Lowest Rate, VOS3000 Bilateral Reconciliation, VOS3000 SIP OPTIONS Online Check, VOS3000 T38 Fax Over IP, VOS3000 G729 Annex B Silence, VOS3000 Gateway Group Reserved Lines, VOS3000 Auxiliary Ring Tone\" style=\"\"><\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Master VOS3000 RTP interrupt detection with four modes: None, Server to Remote, Remote to Server, and Bidirection. Learn when each mode detects media loss and when to use quality monitoring vs automatic recovery.<\/p>\n","protected":false},"author":1,"featured_media":1421,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kadence_starter_templates_imported_post":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[8721,8705,8742,8715,8732,8727,8736,8714,8730,8711,8728,8708,8710,8704,6539,8379,8738,8716,8707,8734,7886,8717,5357,8706,7892,8735,8725,8729,8733,8722,8703,8739,8737,8713,8723,8709,8731,8702,8740,8726,8718,8741,8724,8701,7901,8719,8720,8743,8712],"class_list":["post-1436","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vos3000-softswitch","tag-gateway-media-loss-detection","tag-gateway-rtp-interrupt","tag-gateway-rtp-loss-vos3000","tag-media-proxy-interrupt-detection","tag-media-proxy-rtp-interrupt","tag-rtp-interrupt-configuration","tag-rtp-interrupt-detection-guide","tag-rtp-interrupt-detection-mode","tag-rtp-interrupt-detection-setup","tag-rtp-interrupt-detection-vos3000","tag-rtp-interrupt-gateway-switch","tag-rtp-interrupt-mode-comparison","tag-rtp-stream-monitoring-vos3000","tag-vos3000-bidirection-rtp-detection","tag-vos3000-call-quality-monitoring","tag-vos3000-call-quality-parameter","tag-vos3000-call-quality-rtp","tag-vos3000-detect-and-hang-up-rtp","tag-vos3000-detect-and-report-rtp","tag-vos3000-gateway-rtp-monitoring","tag-vos3000-media-monitoring","tag-vos3000-media-proxy-detection","tag-vos3000-media-proxy-mode","tag-vos3000-media-proxy-rtp","tag-vos3000-one-way-audio-detection","tag-vos3000-operation-management-rtp","tag-vos3000-remote-to-server-rtp","tag-vos3000-routing-gateway-rtp","tag-vos3000-rtp-detection-best-practice","tag-vos3000-rtp-detection-configuration","tag-vos3000-rtp-detection-mode","tag-vos3000-rtp-detection-troubleshooting","tag-vos3000-rtp-detection-vos3000","tag-vos3000-rtp-interrupt","tag-vos3000-rtp-interrupt-bidirection","tag-vos3000-rtp-interrupt-detection","tag-vos3000-rtp-interrupt-four-modes","tag-vos3000-rtp-interrupt-hangup","tag-vos3000-rtp-interrupt-none","tag-vos3000-rtp-interrupt-remote-server","tag-vos3000-rtp-interrupt-server-remote","tag-vos3000-rtp-media-proxy","tag-vos3000-rtp-no-audio-detection","tag-vos3000-rtp-none-detect","tag-vos3000-rtp-stream-interruption","tag-vos3000-rtp-stream-quality","tag-vos3000-server-to-remote-rtp","tag-vos3000-softswitch-rtp-detection","tag-vos3000-voip-quality-monitoring"],"acf":[],"jetpack_featured_media_url":"https:\/\/www.vos3000.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-SIP-OPTIONS-Online-Check-VOS3000-T38-Fax-Over-IP-VOS3000-G729-Annex-B-Silence-VOS3000-Gateway-Group-Reserved-Lines-VOS3000-Auxiliary-Ring-Tone.png","blog_post_layout_featured_media_urls":{"thumbnail":["https:\/\/www.vos3000.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-SIP-OPTIONS-Online-Check-VOS3000-T38-Fax-Over-IP-VOS3000-G729-Annex-B-Silence-VOS3000-Gateway-Group-Reserved-Lines-VOS3000-Auxiliary-Ring-Tone-150x150.png",150,150,true],"full":["https:\/\/www.vos3000.com\/blog\/wp-content\/uploads\/2026\/04\/VOS3000-SIP-OPTIONS-Online-Check-VOS3000-T38-Fax-Over-IP-VOS3000-G729-Annex-B-Silence-VOS3000-Gateway-Group-Reserved-Lines-VOS3000-Auxiliary-Ring-Tone.png",1536,1024,false]},"categories_names":{"1":{"name":"VOS3000 Softswitch","link":"https:\/\/www.vos3000.com\/blog\/category\/vos3000-softswitch\/"}},"tags_names":{"8721":{"name":"gateway media loss detection","link":"https:\/\/www.vos3000.com\/blog\/tag\/gateway-media-loss-detection\/"},"8705":{"name":"gateway RTP interrupt","link":"https:\/\/www.vos3000.com\/blog\/tag\/gateway-rtp-interrupt\/"},"8742":{"name":"gateway RTP loss VOS3000","link":"https:\/\/www.vos3000.com\/blog\/tag\/gateway-rtp-loss-vos3000\/"},"8715":{"name":"media proxy interrupt detection","link":"https:\/\/www.vos3000.com\/blog\/tag\/media-proxy-interrupt-detection\/"},"8732":{"name":"media proxy RTP interrupt","link":"https:\/\/www.vos3000.com\/blog\/tag\/media-proxy-rtp-interrupt\/"},"8727":{"name":"RTP interrupt configuration","link":"https:\/\/www.vos3000.com\/blog\/tag\/rtp-interrupt-configuration\/"},"8736":{"name":"RTP interrupt detection guide","link":"https:\/\/www.vos3000.com\/blog\/tag\/rtp-interrupt-detection-guide\/"},"8714":{"name":"RTP interrupt detection mode","link":"https:\/\/www.vos3000.com\/blog\/tag\/rtp-interrupt-detection-mode\/"},"8730":{"name":"RTP interrupt detection setup","link":"https:\/\/www.vos3000.com\/blog\/tag\/rtp-interrupt-detection-setup\/"},"8711":{"name":"RTP interrupt detection VOS3000","link":"https:\/\/www.vos3000.com\/blog\/tag\/rtp-interrupt-detection-vos3000\/"},"8728":{"name":"RTP interrupt gateway switch","link":"https:\/\/www.vos3000.com\/blog\/tag\/rtp-interrupt-gateway-switch\/"},"8708":{"name":"RTP interrupt mode comparison","link":"https:\/\/www.vos3000.com\/blog\/tag\/rtp-interrupt-mode-comparison\/"},"8710":{"name":"RTP stream monitoring VOS3000","link":"https:\/\/www.vos3000.com\/blog\/tag\/rtp-stream-monitoring-vos3000\/"},"8704":{"name":"VOS3000 bidirection RTP detection","link":"https:\/\/www.vos3000.com\/blog\/tag\/vos3000-bidirection-rtp-detection\/"},"6539":{"name":"VOS3000 call quality 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