Whether a gateway counts as external is decided by the Call Classification setting, so the transfer block depends on a second parameter and blocks nothing until devices are classified.
Checked 2026-09-15
The setting that determines whether a gateway is external (OffNet) or internal (OnNet) is determined by the Call Classification setting.
- Vendor
- Cisco
- Product
- Cisco Unified Communications Manager
- Subsystem
- Call transfer service parameters
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Release 15 and service updates
- Checked
- 2026-09-15
Sources
- System Configuration Guide for Cisco Unified Communications Manager Release 15 and SUs, complete book, Internet Archive capture — Cisco Systems, Inc., served by the Internet Archive · tier 2 current vendor documentation · System Configuration Guide Release 15, Block OffNet Gateway Transfers, page 117
Cite this note
APA
WarmTransfer. (2026, September 15). Unified CM service parameters that change transfer behaviour: source note cucmsp-call-classification-decides-what-offnet-means. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucmsp-call-classification-decides-what-offnet-means
BibTeX
@misc{warmtransfer-claim-cucmsp-call-classification-decides-what-offnet-means,
title = {Unified CM service parameters that change transfer behaviour: source note cucmsp-call-classification-decides-what-offnet-means},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucmsp-call-classification-decides-what-offnet-means},
note = {Source note cucmsp-call-classification-decides-what-offnet-means, checked 2026-09-15}
}