REFER transparency lets Unified CM pass a REFER request to the other call leg without acting on it itself; Cisco gives a call-center example in which a centralized agent transfers a caller to a geographically local agent.

Checked 2026-09-25

Vendor
Cisco
Product
Unified Communications Manager
Subsystem
SIP transparency
Deployment
on-premises
Region
not restricted
Release range
12.5(1) through Release 15 and SUs
Checked
2026-09-25

Sources

Cite this note

APA

WarmTransfer. (2026, September 25). Unified CM SIP normalization and transparency scripts: source note cucm-sip-normalization-refer-transparency. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-sip-normalization-refer-transparency

BibTeX

@misc{warmtransfer-claim-cucm-sip-normalization-refer-transparency,
  title  = {Unified CM SIP normalization and transparency scripts: source note cucm-sip-normalization-refer-transparency},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-sip-normalization-refer-transparency},
  note   = {Source note cucm-sip-normalization-refer-transparency, checked 2026-09-25}
}

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