Source note · Codec selection and bandwidth planning
Webex Calling uses G.711 for PSTN calls, because most PSTN providers do not support Opus.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Webex Calling
- Subsystem
- codecs
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-24 (page updated 2025-04-10)
- Checked
- 2026-09-24
Sources
- Audio specifications for Webex Calling — Cisco Webex · tier 2 current vendor documentation · PSTN section
Cite this note
APA
WarmTransfer. (2026, September 24). Codec selection and bandwidth planning: source note bandwidth-codec-planning-wxc-pstn-g711. WarmTransfer. https://warmtransfer.net/knowledge/claims/bandwidth-codec-planning-wxc-pstn-g711
BibTeX
@misc{warmtransfer-claim-bandwidth-codec-planning-wxc-pstn-g711,
title = {Codec selection and bandwidth planning: source note bandwidth-codec-planning-wxc-pstn-g711},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/bandwidth-codec-planning-wxc-pstn-g711},
note = {Source note bandwidth-codec-planning-wxc-pstn-g711, checked 2026-09-24}
}