Webex Contact Center accepts only G.711 u-law or A-law on PSTN legs and does not transcode, so any other codec such as G.729, iLBC or Opus must be transcoded before reaching it.
Checked 2026-10-01
- Vendor
- Cisco
- Product
- Webex Contact Center
- Subsystem
- media requirements
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-10-01
- Checked
- 2026-10-01
Sources
- Set up voice channels for Webex Contact Center — Cisco · tier 2 current vendor documentation · PSTN Media and Signaling Requirements for Webex Contact Center
Cite this note
APA
WarmTransfer. (2026, October 1). Using Unified CM phones as Webex Contact Center agent stations: source note wxcc-cucm-agent-station-setup-g711-only-transcode. WarmTransfer. https://warmtransfer.net/knowledge/claims/wxcc-cucm-agent-station-setup-g711-only-transcode
BibTeX
@misc{warmtransfer-claim-wxcc-cucm-agent-station-setup-g711-only-transcode,
title = {Using Unified CM phones as Webex Contact Center agent stations: source note wxcc-cucm-agent-station-setup-g711-only-transcode},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/wxcc-cucm-agent-station-setup-g711-only-transcode},
note = {Source note wxcc-cucm-agent-station-setup-g711-only-transcode, checked 2026-10-01}
}