Cisco Unified SRST Administration Guide (All Versions) - Configuring Call Handling

Publisher

Cisco Systems

URL

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cusrst/admin/sccp_sip_srst/configuration/guide/SCCP_and_SIP_SRST_Admin_Guide/srst_call_handling.html

Published

2026-04-25

Updated

unknown

Accessed

2026-09-25

HTTP status

200

License

Cisco documentation; all rights reserved; no-redistribution; short excerpts and locators only

Source notes citing this source

• The access-code command in call-manager-fallback creates temporary POTS dial peers for PSTN trunk access during fallback when the permanent configuration lacks them. in context
• The alias command in call-manager-fallback reroutes calls for numbers that are not registered to an alternate number, which must belong to a registered phone; up to 50 alias rules are allowed. in context
• During fallback, call-forward busy and call-forward noan (with a ring timeout) forward calls to a set directory number, for example a voicemail pilot. in context
• dialplan-pattern expands abbreviated extensions into fully qualified E.164 numbers during fallback, and up to five patterns can be configured. in context
• PSTN access during SRST fallback depends on POTS dial peers whose destination-pattern maps dialled digits to local voice ports (FXO, E&M, BRI or PRI). in context

Cite this source record

APA

WarmTransfer. (2026, April 25). Cisco Unified SRST Administration Guide (All Versions) - Configuring Call Handling. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-srst-admin-call-handling

BibTeX

@misc{warmtransfer-cisco-srst-admin-call-handling,
  title  = {Cisco Unified SRST Administration Guide (All Versions) - Configuring Call Handling},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-srst-admin-call-handling},
  note   = {Cisco Systems, accessed 2026-09-25}
}