Source note · SRST on Cisco IOS XE
In Unified CM, an SRST reference is assigned per device pool, and every phone in that pool tries to connect to the assigned SRST gateway when it cannot reach any Unified CM node.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Cisco Unified Communications Manager
- Subsystem
- srst-reference
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Unified CM 15 and SUs
- Checked
- 2026-09-25
Sources
- System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Configure SRST — Cisco Systems · tier 2 current vendor documentation · Configure SRST > SRST Overview / Configure SRST Reference; Device Pool > Roaming Sensitive Settings
Cite this note
APA
WarmTransfer. (2026, September 25). SRST on Cisco IOS XE: source note srst-configuration-cucm-srst-reference. WarmTransfer. https://warmtransfer.net/knowledge/claims/srst-configuration-cucm-srst-reference
BibTeX
@misc{warmtransfer-claim-srst-configuration-cucm-srst-reference,
title = {SRST on Cisco IOS XE: source note srst-configuration-cucm-srst-reference},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/srst-configuration-cucm-srst-reference},
note = {Source note srst-configuration-cucm-srst-reference, checked 2026-09-25}
}