Source note · SRST on Cisco IOS XE
For SIP phones, Unified SIP SRST backs up an external SIP call control (IP-PBX) by providing basic registrar and redirect server or back-to-back user agent (B2BUA) services.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Cisco Unified SRST
- Subsystem
- sip-srst
- Deployment
- on-premises
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- Cisco Unified SRST Administration Guide (All Versions) - Cisco Unified SRST Feature Overview — Cisco Systems · tier 2 current vendor documentation · Cisco Unified SRST Feature Overview > Cisco Unified SIP SRST
Cite this note
APA
WarmTransfer. (2026, September 25). SRST on Cisco IOS XE: source note srst-configuration-sip-srst-role. WarmTransfer. https://warmtransfer.net/knowledge/claims/srst-configuration-sip-srst-role
BibTeX
@misc{warmtransfer-claim-srst-configuration-sip-srst-role,
title = {SRST on Cisco IOS XE: source note srst-configuration-sip-srst-role},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/srst-configuration-sip-srst-role},
note = {Source note srst-configuration-sip-srst-role, checked 2026-09-25}
}