Source note · PRI and TDM gateway interworking
For TDM-IP call flows on a Webex Calling Local Gateway, Cisco uses a two-leg call routing process with internal loop-back dial-peers so that ICE media optimization can be applied on the IP leg.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Webex Calling Local Gateway
- Subsystem
- TDM call routing
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- Configure Local Gateway on Cisco IOS XE for Webex Calling — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · Section 'Configure Local Gateway with a TDM PSTN trunk'
Cite this note
APA
WarmTransfer. (2026, September 24). PRI and TDM gateway interworking: source note legacy-pri-tdm-lgw-ice-two-leg. WarmTransfer. https://warmtransfer.net/knowledge/claims/legacy-pri-tdm-lgw-ice-two-leg
BibTeX
@misc{warmtransfer-claim-legacy-pri-tdm-lgw-ice-two-leg,
title = {PRI and TDM gateway interworking: source note legacy-pri-tdm-lgw-ice-two-leg},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/legacy-pri-tdm-lgw-ice-two-leg},
note = {Source note legacy-pri-tdm-lgw-ice-two-leg, checked 2026-09-24}
}