The Basic Configuration guide's public DNS for Expressway-E lists SRV records _sips._tcp (5061), _sip._tcp (5060), _sip._udp (5060), _h323cs._tcp (1720), _h323ls._udp (1719) and _h323rs._udp (1719), each targeting the Expressway-E FQDN, plus an A record for that FQDN.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Cisco Expressway
- Subsystem
- DNS
- Deployment
- on-premises
- Region
- not restricted
- Release range
- X14.0
- Checked
- 2026-09-25
Sources
- Cisco Expressway-E and Expressway-C Basic Configuration Deployment Guide (X14.0) - DNS Records — Cisco Systems · tier 2 current vendor documentation · DNS Records > Public DNS (Expressway-E) table
Cite this note
APA
WarmTransfer. (2026, September 25). Setting up business-to-business calling on Cisco Expressway: source note expressway-b2b-setup-srv-record-set. WarmTransfer. https://warmtransfer.net/knowledge/claims/expressway-b2b-setup-srv-record-set
BibTeX
@misc{warmtransfer-claim-expressway-b2b-setup-srv-record-set,
title = {Setting up business-to-business calling on Cisco Expressway: source note expressway-b2b-setup-srv-record-set},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/expressway-b2b-setup-srv-record-set},
note = {Source note expressway-b2b-setup-srv-record-set, checked 2026-09-25}
}