SRST fallback detection typically takes three times the keepalive period (30-second default), while phones holding a standby connection to SRST fall back in about 10 to 20 seconds.

Checked 2026-09-25

Vendor
Cisco
Product
Unified SRST
Subsystem
Fallback
Deployment
on-premises
Region
not restricted
Release range
all SRST versions per guide
Checked
2026-09-25

Sources

Cite this note

APA

WarmTransfer. (2026, September 25). UC disaster recovery and business continuity: source note uc-disaster-recovery-srst-detection-time. WarmTransfer. https://warmtransfer.net/knowledge/claims/uc-disaster-recovery-srst-detection-time

BibTeX

@misc{warmtransfer-claim-uc-disaster-recovery-srst-detection-time,
  title  = {UC disaster recovery and business continuity: source note uc-disaster-recovery-srst-detection-time},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/uc-disaster-recovery-srst-detection-time},
  note   = {Source note uc-disaster-recovery-srst-detection-time, checked 2026-09-25}
}

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