Source note · Webex Contact Center voice channel and PSTN options

Calls arriving at Webex Contact Center must use codec G.711uLaw or G.711aLaw with DTMF via RFC2833; any other codec (G.729, iLBC, Opus, etc.) must be transcoded externally before reaching Webex Contact Center, since Webex Contact Center provides no transcoding or media termination point service.

Checked 2026-09-04

Codec: G.711uLaw or G.711aLaw

Vendor: Cisco
Product: Webex Contact Center
Subsystem: Voice channel and PSTN
Deployment: cloud
Region: not restricted
Release range: current as of 2026-09-04
Checked: 2026-09-04

Sources

Set up voice channels for Webex Contact Center — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · PSTN Media and Signaling Requirements for Webex Contact Center subsection

Cite this note

APA

WarmTransfer. (2026, September 4). Webex Contact Center voice channel and PSTN options: source note wxcc-vc-g711-only-no-transcoding. WarmTransfer. https://warmtransfer.net/knowledge/claims/wxcc-vc-g711-only-no-transcoding

BibTeX

@misc{warmtransfer-claim-wxcc-vc-g711-only-no-transcoding,
  title  = {Webex Contact Center voice channel and PSTN options: source note wxcc-vc-g711-only-no-transcoding},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/wxcc-vc-g711-only-no-transcoding},
  note   = {Source note wxcc-vc-g711-only-no-transcoding, checked 2026-09-04}
}

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