Cisco's 12.x SRND recommends enabling SIP OPTIONS ping on all SIP trunks so Unified CM tracks trunk state dynamically instead of per call on timeout.

Checked 2026-09-24

Vendor
Cisco
Product
Unified Communications Manager
Subsystem
SIP profile
Deployment
on-premises
Region
not restricted
Release range
Collaboration System 12.x design guidance
Checked
2026-09-24

Sources

Cite this note

APA

WarmTransfer. (2026, September 24). Unified CM SIP trunk to CUBE configuration: source note cucm-config-sip-trunk-to-cube-srnd-options-ping-rec. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-config-sip-trunk-to-cube-srnd-options-ping-rec

BibTeX

@misc{warmtransfer-claim-cucm-config-sip-trunk-to-cube-srnd-options-ping-rec,
  title  = {Unified CM SIP trunk to CUBE configuration: source note cucm-config-sip-trunk-to-cube-srnd-options-ping-rec},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-config-sip-trunk-to-cube-srnd-options-ping-rec},
  note   = {Source note cucm-config-sip-trunk-to-cube-srnd-options-ping-rec, checked 2026-09-24}
}

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