Master VOS3000 SIP send unregister with SS_SIP_USER_AGENT_SEND_UNREGISTER. Configure cancel register messages on restart, registration cleanup, and graceful shutdown for your VoIP softswitch.
VOS3000 SIP Display From: Important E164 Caller Configuration
Master VOS3000 SIP display from with SS_SIP_E164_DISPLAY_FROM. Configure E164 caller format in From header, per-gateway display modes, caller presentation, and mapping gateway number extraction.
VOS3000 SIP Routing Gateway Contact: Essential INVITE Header Guide
Master VOS3000 SIP routing gateway contact with SS_SIP_ROUTING_GATEWAY_INVITE_USE_CONTACT. Configure Contact header routing, request-line callee handling, and To field preservation for VoIP softswitch.