Source note · SIP session timers
Cisco TAC attributes the CVP drop to CVP omitting session timer headers in re-INVITEs so each endpoint could assume the other was the refresher.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Cisco Unified CVP
- Subsystem
- session refresh interop
- Deployment
- on-premises
- Region
- not restricted
- Release range
- CVP 11.6 scenario
- Checked
- 2026-09-25
Sources
- Troubleshoot Session Refresh Timer with Cisco Customer Voice Portal — Cisco Systems · tier 2 current vendor documentation · Cause / Problem description
Cite this note
APA
WarmTransfer. (2026, September 25). SIP session timers: source note sip-session-timers-cvp-missing-headers-cause. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-session-timers-cvp-missing-headers-cause
BibTeX
@misc{warmtransfer-claim-sip-session-timers-cvp-missing-headers-cause,
title = {SIP session timers: source note sip-session-timers-cvp-missing-headers-cause},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-session-timers-cvp-missing-headers-cause},
note = {Source note sip-session-timers-cvp-missing-headers-cause, checked 2026-09-25}
}