The Unified CM 12.5(1) System Configuration Guide lists Delayed Offer, Early Offer and Best Effort Early Offer among the features configurable on SIP trunks.

Checked 2026-09-25

Vendor
Cisco
Product
Unified CM
Subsystem
sip-trunk
Deployment
on-premises
Region
not restricted
Release range
12.5(1)
Checked
2026-09-25

Sources

Cite this note

APA

WarmTransfer. (2026, September 25). SIP early offer and delayed offer: source note sip-early-delayed-offer-cucm1251-offer-modes-listed. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-early-delayed-offer-cucm1251-offer-modes-listed

BibTeX

@misc{warmtransfer-claim-sip-early-delayed-offer-cucm1251-offer-modes-listed,
  title  = {SIP early offer and delayed offer: source note sip-early-delayed-offer-cucm1251-offer-modes-listed},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/sip-early-delayed-offer-cucm1251-offer-modes-listed},
  note   = {Source note sip-early-delayed-offer-cucm1251-offer-modes-listed, checked 2026-09-25}
}

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