PSTN trunking for hybrid Webex Calling deployments

Publisher

Cisco Systems, Inc. (Webex Help Center)

URL

https://help.webex.com/en-us/article/x3f0tm/PSTN-trunking-for-hybrid-Webex-Calling-deployments

Published

2025-11-04

Updated

unknown

Accessed

2026-09-04

HTTP status

200

License

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

Claims citing this source

• The Route List Calls bursting announcement plays only for outbound off-net calls; it does not play for inbound calls or for emergency calls. fact in context
• When off-net call volume exceeds the 20 percent bursting allowance, non-emergency calls are blocked. fact in context
• The Route List Calls license includes 20 percent bursting beyond the licensed call volume. fact in context
• While in bursting mode the originating on-premises user of an outbound off-net call hears an announcement that the call is in bursting mode and advising them to contact their administrator. fact in context
• Additional Route List Calls capacity is added to an existing subscription by purchasing the Add Route List SKU through a change order, and existing Enterprise Agreement customers need a subscription modification to obtain Route List Calls licenses. fact in context
• Calls blocked by Route List Calls capacity exhaustion are rejected at call admission before media is established, so troubleshooting tools that measure media quality will show no packet loss, jitter or MOS degradation for the failed calls. inference in context
• The Route List Calls license sets the limit for concurrent off-net PSTN route list calls between an on-premises system and either cloud or on-premises PSTN. fact in context
• Enterprise Agreement customers receive Route List Calls capacity equal to 25 percent of their Webex Calling licensed users. fact in context
• Incoming calls that exceed the Route List Calls limit are rejected without an announcement to the caller. fact in context
• Named User customers receive no Route List Calls capacity by default and must purchase it separately. fact in context
• Route List Calls licensing is org-level concurrent call capacity rather than a per-user assignment, so it does not appear on an individual user's license record in Control Hub. inference in context
• Trial subscriptions include 10 concurrent Route List Calls. fact in context

Cite this source record

APA

WarmTransfer. (2025, November 4). PSTN trunking for hybrid Webex Calling deployments. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-help-x3f0tm-pstn-trunking-hybrid

BibTeX

@misc{warmtransfer-cisco-help-x3f0tm-pstn-trunking-hybrid,
  title  = {PSTN trunking for hybrid Webex Calling deployments},
  author = {{WarmTransfer}},
  year   = {2025},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-help-x3f0tm-pstn-trunking-hybrid},
  note   = {Cisco Systems, Inc. (Webex Help Center), accessed 2026-09-04}
}