Source note · Remote site survivability patterns
If a phone already has an active standby connection to the SRST router, fallback takes 10 to 20 seconds after it loses Unified CM.
Checked 2026-09-24
If the phone has an active standby connection established with a Cisco Unified SRST router, the fallback process takes 10 to 20 seconds after connection with Cisco Unified CM is lost.
- Vendor
- Cisco
- Product
- Cisco Unified SRST
- Subsystem
- srst
- Deployment
- on-premises
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- Cisco Unified SRST Administration Guide (All Versions) - Cisco Unified SRST Feature Overview — Cisco Systems · tier 2 current vendor documentation · How Fallback Occurs
Cite this note
APA
WarmTransfer. (2026, September 24). Remote site survivability patterns: source note survivability-remote-site-srst-fallback-time. WarmTransfer. https://warmtransfer.net/knowledge/claims/survivability-remote-site-srst-fallback-time
BibTeX
@misc{warmtransfer-claim-survivability-remote-site-srst-fallback-time,
title = {Remote site survivability patterns: source note survivability-remote-site-srst-fallback-time},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/survivability-remote-site-srst-fallback-time},
note = {Source note survivability-remote-site-srst-fallback-time, checked 2026-09-24}
}