Cisco advises limiting the number of PSTN carriers involved in routing a call to Webex Contact Center to no more than two, and treats chained forwarding across multiple sequential carriers as unsupported because of the latency it introduces.
Checked 2026-09-22
- Vendor
- Cisco
- Product
- Webex Contact Center
- Subsystem
- pstn-connectivity
- Deployment
- multi-tenant, hybrid
- Region
- not restricted
- Release range
- current as of 2026-09-22
- Checked
- 2026-09-22
Sources
- Set up voice channels for Webex Contact Center — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · section "PSTN Call Forwarding Scenarios and Best Practices"
Cite this note
APA
WarmTransfer. (2026, September 22). Telephony during a UCCX to Webex Contact Center migration: source note uccx-to-webex-cc-telephony-coexistence-two-carrier-limit. WarmTransfer. https://warmtransfer.net/knowledge/claims/uccx-to-webex-cc-telephony-coexistence-two-carrier-limit
BibTeX
@misc{warmtransfer-claim-uccx-to-webex-cc-telephony-coexistence-two-carrier-limit,
title = {Telephony during a UCCX to Webex Contact Center migration: source note uccx-to-webex-cc-telephony-coexistence-two-carrier-limit},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/uccx-to-webex-cc-telephony-coexistence-two-carrier-limit},
note = {Source note uccx-to-webex-cc-telephony-coexistence-two-carrier-limit, checked 2026-09-22}
}