Source note · SIP session timers
In a documented CVP 11.6 flow, calls dropped at the 30-minute mark when CUCM sent BYE with cause 41 after a session timer negotiation mismatch.
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 · Problem section
Cite this note
APA
WarmTransfer. (2026, September 25). SIP session timers: source note sip-session-timers-cvp-30min-bye-cause-41. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-session-timers-cvp-30min-bye-cause-41
BibTeX
@misc{warmtransfer-claim-sip-session-timers-cvp-30min-bye-cause-41,
title = {SIP session timers: source note sip-session-timers-cvp-30min-bye-cause-41},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-session-timers-cvp-30min-bye-cause-41},
note = {Source note sip-session-timers-cvp-30min-bye-cause-41, checked 2026-09-25}
}