Source note · Remote site survivability patterns

SRST fallback mode on Cisco Unified CME works only with SCCP phones; SIP phones are not supported.

Checked 2026-09-24

SRST Fallback Mode is applicable only for SCCP phones. SIP phones are not supported.

Vendor: Cisco
Product: Cisco Unified CME
Subsystem: cme-srst-fallback
Deployment: on-premises
Region: not restricted
Release range: CME 4.0 and later; page updated 2022-08-15
Checked: 2026-09-24

Sources

Cisco Unified Communications Manager Express System Administrator Guide - SRST Fallback Mode — Cisco Systems · tier 2 current vendor documentation · Restrictions for SRST Fallback Mode

Cite this note

APA

WarmTransfer. (2026, September 24). Remote site survivability patterns: source note survivability-remote-site-cme-srst-sccp-only. WarmTransfer. https://warmtransfer.net/knowledge/claims/survivability-remote-site-cme-srst-sccp-only

BibTeX

@misc{warmtransfer-claim-survivability-remote-site-cme-srst-sccp-only,
  title  = {Remote site survivability patterns: source note survivability-remote-site-cme-srst-sccp-only},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/survivability-remote-site-cme-srst-sccp-only},
  note   = {Source note survivability-remote-site-cme-srst-sccp-only, checked 2026-09-24}
}

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