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 Publish Expire: Essential Gateway Concurrency Guide
Master VOS3000 SIP publish expire with SS_SIP_PUBLISH_EXPIRE. Configure 30-7200s timeout for gateway concurrency control, PUBLISH method status management, and automatic call limit enforcement.