Sistema VOS3000 sesion SIP: configure retransmision backoff exponencial SS_SIP_RESEND_INTERVAL, timer refresh SESSION_UPDATE_SEGMENT, early hangup zombie calls, no-timer safety net y PRACK 100rel para llamadas confiables.
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.