{"id":1503,"date":"2026-04-29T14:09:52","date_gmt":"2026-04-29T14:09:52","guid":{"rendered":"https:\/\/www.vos3000.com\/blog\/?p=1503"},"modified":"2026-04-29T14:10:01","modified_gmt":"2026-04-29T14:10:01","slug":"vos3000-registration-replace","status":"publish","type":"post","link":"https:\/\/www.vos3000.com\/blog\/vos3000-registration-replace\/","title":{"rendered":"VOS3000 Registration Replace Kick: Reliable SS_ENDPOINT_REGISTER_REPLACE"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\" id=\"vos-3000-registration-replace-kick-reliable-ss-endpoint-register-replace\">VOS3000 Registration Replace Kick: Reliable SS_ENDPOINT_REGISTER_REPLACE<\/h1>\n\n\n\n<p>\ud83d\udcde When a SIP phone registers from a new location while its previous registration is still active, VOS3000 faces a critical decision: kick the old session and accept the new one, or reject the new registration and keep the existing session alive. The <strong>VOS3000 registration replace kick<\/strong> \u2014 controlled by <strong>SS_ENDPOINT_REGISTER_REPLACE<\/strong> \u2014 determines exactly how this conflict is resolved, with significant implications for shared-line scenarios, mobile workers, and multi-device users. \ud83d\udd04<\/p>\n\n\n\n<p>\u2699\ufe0f In VoIP deployments, registration conflicts are common. A user might move their phone to a different network, restart their SIP client on a different device, or experience a network failover that causes a re-registration from a new IP address. When the new REGISTER arrives at VOS3000, the softswitch must decide what to do with the existing registration. The <strong>VOS3000 registration replace kick<\/strong> setting controls this behavior: when On (default), the new registration replaces the old one and the previous session is terminated; when Off, the new registration is rejected and the existing session remains active. \ud83d\udd27<\/p>\n\n\n\n<p>\ud83c\udfaf This guide covers SS_ENDPOINT_REGISTER_REPLACE from the VOS3000 2.1.9.07 manual \u00a74.3.5.2, including the two behaviors, use cases for shared-line vs dedicated-line scenarios, troubleshooting common registration conflicts, and how this parameter interacts with other registration settings. Need help? WhatsApp us at <strong>+8801911119966<\/strong> for professional VOS3000 configuration. \ud83d\udcde<\/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-registration-replace-kick-reliable-ss-endpoint-register-replace\">VOS3000 Registration Replace Kick: Reliable SS_ENDPOINT_REGISTER_REPLACE<\/a><ul><li><a href=\"#\ud83d\udd10-what-is-the-vos-3000-registration-replace-kick\">\ud83d\udd10 What Is the VOS3000 Registration Replace Kick?<\/a><ul><li><a href=\"#\ud83d\udccb-registration-replace-on-vs-off-behavior-comparison\">\ud83d\udccb Registration Replace On vs Off \u2014 Behavior Comparison<\/a><\/li><\/ul><\/li><li><a href=\"#\u2699\ufe0f-ss-endpoint-register-replace-the-core-parameter\">\u2699\ufe0f SS_ENDPOINT_REGISTER_REPLACE \u2014 The Core Parameter<\/a><\/li><li><a href=\"#\ud83d\udccb-step-by-step-configuration\">\ud83d\udccb Step-by-Step Configuration<\/a><\/li><li><a href=\"#\ud83d\udee1\ufe0f-common-problems-and-solutions\">\ud83d\udee1\ufe0f Common Problems and Solutions &#8211; VOS3000 Registration Replace<\/a><ul><li><a href=\"#\u274c-problem-1-phone-calls-drop-when-user-restarts-sip-client\">\u274c Problem 1: Phone Calls Drop When User Restarts SIP Client<\/a><\/li><li><a href=\"#\u274c-problem-2-unauthorized-device-kicking-legitimate-user\">\u274c Problem 2: Unauthorized Device Kicking Legitimate User<\/a><\/li><li><a href=\"#\u274c-problem-3-stale-registrations-after-device-moves-with-replace-off\">\u274c Problem 3: Stale Registrations After Device Moves (with Replace Off)<\/a><\/li><\/ul><\/li><li><a href=\"#\u2753-frequently-asked-questions\">\u2753 Frequently Asked Questions<\/a><ul><li><a href=\"#\u2753-what-is-the-vos-3000-registration-replace-kick\">\u2753 What is the VOS3000 registration replace kick?<\/a><\/li><li><a href=\"#\u2753-should-i-set-registration-replace-kick-to-on-or-off\">\u2753 Should I set registration replace kick to On or Off?<\/a><\/li><li><a href=\"#\u2753-does-the-registration-replace-kick-affect-active-calls\">\u2753 Does the registration replace kick affect active calls?<\/a><\/li><li><a href=\"#\u2753-how-does-this-interact-with-nat-keepalive\">\u2753 How does this interact with NAT keepalive?<\/a><\/li><li><a href=\"#\u2753-can-i-set-different-replace-kick-behavior-per-endpoint\">\u2753 Can I set different replace kick behavior per endpoint?<\/a><\/li><li><a href=\"#\u2753-what-happens-to-the-kicked-sessions-active-calls\">\u2753 What happens to the kicked session&#8217;s active calls?<\/a><\/li><\/ul><\/li><li><a href=\"#\ud83d\udcde-need-expert-help-with-vos-3000-registration-replace-kick\">\ud83d\udcde Need Expert Help with VOS3000 Registration Replace Kick?<\/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-the-vos-3000-registration-replace-kick\">\ud83d\udd10 What Is the VOS3000 Registration Replace Kick?<\/h2>\n\n\n\n<p>\u23f1\ufe0f The <strong>VOS3000 registration replace kick<\/strong> is a registration policy parameter that determines how VOS3000 handles incoming SIP REGISTER requests when a matching registration already exists. According to the official VOS3000 2.1.9.07 manual \u00a74.3.5.2, SS_ENDPOINT_REGISTER_REPLACE controls whether the system allows replacing the current registered users when terminal registration occurs. This is one of the most fundamental SIP registration behavior settings in VOS3000, directly affecting how endpoints connect and reconnect to the softswitch.<\/p>\n\n\n\n<p>\ud83d\udca1 <strong>Why registration conflict handling matters:<\/strong> Without proper conflict resolution, you could end up with ghost registrations (where the system thinks an endpoint is registered but it is actually offline), duplicate registrations (where the same account appears registered from multiple locations), or registration flapping (where two devices continuously kick each other&#8217;s registrations). Each of these conditions causes call delivery failures, one-way audio, and frustrated users.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udce1 Controls behavior when a new registration conflicts with an existing one<\/li>\n\n\n\n<li>\ud83d\udd04 On = new registration kicks old session; Off = new registration is rejected<\/li>\n\n\n\n<li>\ud83d\udcca Default is On \u2014 standard behavior for most SIP deployments<\/li>\n\n\n\n<li>\ud83d\udee1\ufe0f Shared-line scenarios benefit from On; dedicated-line scenarios may prefer Off<\/li>\n\n\n\n<li>\ud83c\udfaf Works alongside registration expiry and NAT keepalive settings<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udccd <strong>Location in VOS3000 Client:<\/strong> Operation management \u2192 Softswitch management \u2192 Additional settings \u2192 System parameter<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83d\udccb-registration-replace-on-vs-off-behavior-comparison\">\ud83d\udccb Registration Replace On vs Off \u2014 Behavior Comparison<\/h3>\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\">Aspect<\/th><th class=\"has-text-align-left\" data-align=\"left\">On (default)<\/th><th class=\"has-text-align-left\" data-align=\"left\">Off<\/th><\/tr><tr><td>\ud83d\udd04 New Registration<\/td><td>Accepted \u2014 replaces old registration<\/td><td>Rejected \u2014 old registration preserved<\/td><\/tr><tr><td>\ud83d\udcde Old Session<\/td><td>Kicked \u2014 terminated immediately<\/td><td>Remains active until expiry<\/td><\/tr><tr><td>\ud83c\udfe2 Best For<\/td><td>Mobile workers, shared accounts, hot-desking<\/td><td>Dedicated lines, one-device-per-account policy<\/td><\/tr><tr><td>\u26a0\ufe0f Risk<\/td><td>Unauthorized device can kick legitimate session<\/td><td>Stale registrations may persist after device moves<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u2699\ufe0f-ss-endpoint-register-replace-the-core-parameter\">\u2699\ufe0f SS_ENDPOINT_REGISTER_REPLACE \u2014 The Core Parameter<\/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\">Attribute<\/th><th class=\"has-text-align-left\" data-align=\"left\">Value<\/th><\/tr><tr><td>\ud83d\udccc Parameter Name<\/td><td>SS_ENDPOINT_REGISTER_REPLACE<\/td><\/tr><tr><td>\ud83d\udd22 Default Value<\/td><td>On<\/td><\/tr><tr><td>\ud83d\udcdd Description<\/td><td>Allow replace the current registered users when terminal registration<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\ud83d\udca1 <strong>How the default (On) works:<\/strong> When a SIP phone sends a REGISTER request and a matching registration already exists (same SIP account, possibly different Contact\/IP), VOS3000 accepts the new registration and removes the old one. The old session is immediately terminated \u2014 any active call is disconnected, and subsequent INVITE requests are routed to the newly registered Contact address. This is the standard SIP behavior expected by most phones and is the correct setting for the majority of deployments.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udccb-step-by-step-configuration\">\ud83d\udccb Step-by-Step Configuration<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\ud83d\udd10 Log in to VOS3000 Client<\/li>\n\n\n\n<li>\ud83d\udccc Navigate: <strong>Operation management \u2192 Softswitch management \u2192 Additional settings \u2192 System parameter<\/strong><\/li>\n\n\n\n<li>\ud83d\udd0d Locate SS_ENDPOINT_REGISTER_REPLACE<\/li>\n\n\n\n<li>\u270f\ufe0f Set to On for shared-line\/mobile scenarios or Off for dedicated-line policies<\/li>\n\n\n\n<li>\ud83d\udcbe Save and apply the configuration<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udee1\ufe0f-common-problems-and-solutions\">\ud83d\udee1\ufe0f Common Problems and Solutions &#8211; VOS3000 Registration Replace<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u274c-problem-1-phone-calls-drop-when-user-restarts-sip-client\">\u274c Problem 1: Phone Calls Drop When User Restarts SIP Client<\/h3>\n\n\n\n<p>\ud83d\udd0d <strong>Symptom:<\/strong> Active calls are disconnected when the user restarts their SIP softphone, even though they did not hang up.<\/p>\n\n\n\n<p>\ud83d\udca1 <strong>Cause:<\/strong> With SS_ENDPOINT_REGISTER_REPLACE On, the new REGISTER from the restarting client kicks the old registration, terminating the active 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 This is expected behavior with replace kick On \u2014 the new registration replaces the old session<\/li>\n\n\n\n<li>\ud83d\udcca Train users not to restart their SIP client during active calls<\/li>\n\n\n\n<li>\ud83d\udcde For environments where this is problematic, consider setting to Off with appropriate NAT keepalive<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u274c-problem-2-unauthorized-device-kicking-legitimate-user\">\u274c Problem 2: Unauthorized Device Kicking Legitimate User<\/h3>\n\n\n\n<p>\ud83d\udd0d <strong>Symptom:<\/strong> A legitimate user&#8217;s registration is repeatedly being replaced by an unauthorized device using the same credentials.<\/p>\n\n\n\n<p>\ud83d\udca1 <strong>Cause:<\/strong> With replace kick On, any device with the correct credentials can replace the existing registration.<\/p>\n\n\n\n<p>\u2705 <strong>Solutions:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udd27 Use IP-based authentication or <a href=\"https:\/\/multahost.com\/blog\/vos3000-sip-authentication\/\" target=\"_blank\" rel=\"noopener\">SIP authentication<\/a> to restrict which devices can register<\/li>\n\n\n\n<li>\ud83d\udcca Enable <a href=\"https:\/\/multahost.com\/blog\/vos3000-registration-flood\/\" target=\"_blank\" rel=\"noopener\">registration flood protection<\/a> to detect rapid re-registration attacks<\/li>\n\n\n\n<li>\ud83d\udcde Consider SS_ENDPOINT_REGISTER_REPLACE Off for high-security accounts<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u274c-problem-3-stale-registrations-after-device-moves-with-replace-off\">\u274c Problem 3: Stale Registrations After Device Moves (with Replace Off)<\/h3>\n\n\n\n<p>\ud83d\udd0d <strong>Symptom:<\/strong> After moving a phone to a new network, incoming calls still route to the old (now unreachable) IP address.<\/p>\n\n\n\n<p>\ud83d\udca1 <strong>Cause:<\/strong> With replace kick Off, the new registration from the moved phone is rejected, and the old registration persists until expiry.<\/p>\n\n\n\n<p>\u2705 <strong>Solutions:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udd27 Set SS_ENDPOINT_REGISTER_REPLACE to On so new registrations automatically replace old ones<\/li>\n\n\n\n<li>\ud83d\udcca Reduce registration expiry time (SS_ENDPOINT_EXPIRE) to minimize stale registration duration<\/li>\n\n\n\n<li>\ud83d\udcde Manually delete stale registrations from the VOS3000 endpoint management interface<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u2753-frequently-asked-questions\">\u2753 Frequently Asked Questions<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u2753-what-is-the-vos-3000-registration-replace-kick\">\u2753 What is the VOS3000 registration replace kick?<\/h3>\n\n\n\n<p>\u23f1\ufe0f The <strong>VOS3000 registration replace kick<\/strong> is controlled by SS_ENDPOINT_REGISTER_REPLACE, which determines whether VOS3000 allows a new SIP registration to replace an existing one for the same account. When On (default), the new registration is accepted and the old session is terminated (kicked). When Off, the new registration is rejected and the existing session remains active. This parameter is documented in the VOS3000 2.1.9.07 manual \u00a74.3.5.2.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u2753-should-i-set-registration-replace-kick-to-on-or-off\">\u2753 Should I set registration replace kick to On or Off?<\/h3>\n\n\n\n<p>\ud83d\udd27 For most deployments, keep SS_ENDPOINT_REGISTER_REPLACE <strong>On<\/strong> (the default). This ensures that when users move their phones, restart their clients, or experience network changes, their registration is updated automatically. Setting it to Off is appropriate only for dedicated-line scenarios where each SIP account should be used by exactly one device and you want to prevent any other device from taking over the registration, even temporarily. The security trade-off of Off is that stale registrations may persist after device moves.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u2753-does-the-registration-replace-kick-affect-active-calls\">\u2753 Does the registration replace kick affect active calls?<\/h3>\n\n\n\n<p>\ud83d\udcde Yes, when SS_ENDPOINT_REGISTER_REPLACE is On and a new registration replaces an old one, any active call associated with the old registration is terminated. This is because the new registration indicates that the endpoint is now reachable at a different Contact address or via a different network path, making the old call session invalid. If you need to preserve active calls during re-registration, ensure your SIP clients do not send unnecessary REGISTER requests during active calls.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u2753-how-does-this-interact-with-nat-keepalive\">\u2753 How does this interact with NAT keepalive?<\/h3>\n\n\n\n<p>\ud83d\udcca The <strong>VOS3000 registration replace kick<\/strong> works independently of NAT keepalive mechanisms. NAT keepalive (controlled by SS_SIP_NAT_KEEP_ALIVE parameters) sends periodic keepalive messages to maintain NAT bindings for registered endpoints. These keepalive messages are not registration requests and do not trigger the replace kick behavior. Only actual SIP REGISTER requests trigger the replace-or-reject decision. For more on <a href=\"https:\/\/multahost.com\/blog\/vos3000-sip-nat-keep-alive\/\" target=\"_blank\" rel=\"noopener\">NAT keepalive configuration<\/a>, see our detailed guide.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u2753-can-i-set-different-replace-kick-behavior-per-endpoint\">\u2753 Can I set different replace kick behavior per endpoint?<\/h3>\n\n\n\n<p>\ud83d\udccb No, SS_ENDPOINT_REGISTER_REPLACE is a global system parameter that applies to all endpoint registrations in VOS3000. You cannot configure different replace behavior for individual phones or gateways. If you need different behavior for specific accounts, the recommended approach is to use account-level security policies \u2014 such as IP-based authentication for high-security accounts and password-based authentication for mobile accounts \u2014 to control which devices can register in the first place.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u2753-what-happens-to-the-kicked-sessions-active-calls\">\u2753 What happens to the kicked session&#8217;s active calls?<\/h3>\n\n\n\n<p>\ud83d\udcca When the <strong>VOS3000 registration replace kick<\/strong> terminates the old session, any active calls associated with that session are disconnected. VOS3000 sends a BYE message to both parties of the active call, and the CDR records the call termination with the appropriate end direction. This ensures clean call teardown rather than leaving ghost calls consuming resources. For call termination analysis, see our <a href=\"https:\/\/multahost.com\/blog\/vos3000-call-end-reasons\/\" target=\"_blank\" rel=\"noopener\">call end reasons guide<\/a>. WhatsApp us at <strong>+8801911119966<\/strong> for expert help. \ud83d\udcde<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcde-need-expert-help-with-vos-3000-registration-replace-kick\">\ud83d\udcde Need Expert Help with VOS3000 Registration Replace Kick?<\/h2>\n\n\n\n<p>\ud83d\udd27 Proper <strong>VOS3000 registration replace kick<\/strong> configuration ensures your SIP endpoints can reconnect smoothly while maintaining security against unauthorized registration hijacking. Whether you need help configuring registration behavior, troubleshooting registration conflicts, or optimizing your endpoint management strategy, our team is ready to assist. Reach us on WhatsApp at <strong>+8801911119966<\/strong> for professional VOS3000 configuration services. \ud83d\udcde<\/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\">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 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, VOS3000 Black White List Groups, VOS3000 System White List, VOS3000 Callee Balance Verification, VOS3000 Dial Plan Wildcards, VOS3000 Number Length Matching, VOS3000 Random Routing Patterns, VOS3000 Position Keeper Dollar, VOS3000 LRN Number Portability, VOS3000 LRN Numbers\"><\/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 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, VOS3000 Black White List Groups, VOS3000 System White List, VOS3000 Callee Balance Verification, VOS3000 Dial Plan Wildcards, VOS3000 Number Length Matching, VOS3000 Random Routing Patterns, VOS3000 Position Keeper Dollar, VOS3000 LRN Number Portability, VOS3000 LRN Numbers\"><\/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 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, VOS3000 Black White List Groups, VOS3000 System White List, VOS3000 Callee Balance Verification, VOS3000 Dial Plan Wildcards, VOS3000 Number Length Matching, VOS3000 Random Routing Patterns, VOS3000 Position Keeper Dollar, VOS3000 LRN Number Portability, VOS3000 LRN Numbers\"><\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Configure VOS3000 registration replace kick with SS_ENDPOINT_REGISTER_REPLACE. Handle conflicting SIP registrations \u2014 kick old session or reject new 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