Source note · Setting up the Webex App for Unified CM calling
The _cisco-uds SRV records must not be resolvable outside the internal network, otherwise the client will not start MRA negotiation through Expressway-E.
Checked 2026-09-30
the cisco-uds SRV records are NOT resolvable outside of the internal network
- Vendor
- Cisco
- Product
- Cisco Expressway
- Subsystem
- MRA DNS
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Expressway X14.3 guide
- Checked
- 2026-09-30
Sources
- Mobile and Remote Access Through Cisco Expressway Deployment Guide (X14.3) - MRA Requirements and Prerequisites — Cisco Systems · tier 2 current vendor documentation · MRA requirements > DNS records > Local DNS
Cite this note
APA
WarmTransfer. (2026, September 30). Setting up the Webex App for Unified CM calling: source note cucm-webex-app-calling-setup-mra-uds-not-external. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-webex-app-calling-setup-mra-uds-not-external
BibTeX
@misc{warmtransfer-claim-cucm-webex-app-calling-setup-mra-uds-not-external,
title = {Setting up the Webex App for Unified CM calling: source note cucm-webex-app-calling-setup-mra-uds-not-external},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-webex-app-calling-setup-mra-uds-not-external},
note = {Source note cucm-webex-app-calling-setup-mra-uds-not-external, checked 2026-09-30}
}