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.
VOS3000 SIP Outbound Registration Parameters: Expiry and Retry Delay Easy Guide
Master VOS3000 SIP outbound registration parameters: SS_SIP_USER_AGENT_EXPIRE (Auto Negotiation, 20-7200s) and SS_SIP_USER_AGENT_RETRY_DELAY (30-600s). Configure registration expiry, retry delay, and failover for stable SIP trunking.
VOS3000 SIP Resend Interval: Important Message Retransmission Guide
Master VOS3000 SIP resend interval with SS_SIP_RESEND_INTERVAL. Configure exponential backoff retransmission, retry timing, and gateway failover for reliable VoIP.
VOS3000 SIP NAT Keep Alive: Complete Configuration Best Practices
Master VOS3000 SIP NAT keep alive configuration with HELLO message, period, interval, and quantity settings to prevent NAT timeout and maintain VoIP registrations.
VOS3000 SIP No Timer Call Duration: Important Maximum Limit Easy Guide
Master VOS3000 SIP no timer call duration limit. Configure SS_SIP_NO_TIMER_REINVITE_INTERVAL to prevent runaway calls, protect billing accuracy, and stop zombie sessions.
VOS3000 SIP Session Timer: Powerful RFC 4028 Setup Guide
Master VOS3000 SIP session timer with RFC 4028. Configure SS_SIP_SESSION_TTL, reinvite intervals, and early hangup to prevent ultra-long bills and ghost calls.
VOS3000 SIP Authentication Retry: Essential Timeout Settings Easy Guide
Master VOS3000 SIP authentication retry and timeout settings. Configure SS_SIP_AUTHENTICATION_RETRY and SS_SIP_AUTHENTICATION_TIMEOUT to prevent 401/407 failures and secure your VoIP softswitch.
VOS3000 Billing Free Time Powerful Duration Shaving Configuration
VOS3000 billing free time subtracts seconds from CDR duration before rate calculation. Learn powerful SERVER_BILLING_FREE_TIME configuration for promotions.