Webex Contact Center PSTN requirements specify RFC 2833 DTMF and a 20 ms packetization time in the SDP.
Checked 2026-09-30
- Vendor
- Cisco
- Product
- Webex Contact Center
- Subsystem
- PSTN media and signaling
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-30
- Checked
- 2026-09-30
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 > DTMF; Packetization Timer in SIP SDP
Cite this note
APA
WarmTransfer. (2026, September 30). Troubleshooting inbound calls that fail to reach Webex Contact Center: source note wxcc-inbound-call-failures-dtmf-ptime. WarmTransfer. https://warmtransfer.net/knowledge/claims/wxcc-inbound-call-failures-dtmf-ptime
BibTeX
@misc{warmtransfer-claim-wxcc-inbound-call-failures-dtmf-ptime,
title = {Troubleshooting inbound calls that fail to reach Webex Contact Center: source note wxcc-inbound-call-failures-dtmf-ptime},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/wxcc-inbound-call-failures-dtmf-ptime},
note = {Source note wxcc-inbound-call-failures-dtmf-ptime, checked 2026-09-30}
}