Cisco Expressway-E and Expressway-C Basic Configuration Deployment Guide (X14.0) - DNS Records

Publisher

Cisco Systems

URL

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X14-0/basic_config/exwy_b_cisco-expressway-e-and-expressway-c-basic-configuration-deployment-guide-x14-0/exwy_m_dns-records.html

Published

2021-04-14

Updated

unknown

Accessed

2026-09-25

HTTP status

200

License

Cisco website terms of use; all rights reserved; no-redistribution; short excerpts and locators only

Source notes citing this source

• With a cluster of Expressway-Es, DNS A and SRV records must be set up for each peer in the cluster. in context
• Cisco's example public DNS for H.323 publishes _h323cs._tcp on port 1720 for call signalling, plus _h323ls._udp and _h323rs._udp on port 1719, all targeting the Expressway-E. in context
• Cisco's example public DNS for the Expressway-E publishes _sips._tcp on port 5061, _sip._tcp on port 5060 and _sip._udp on port 5060, each targeting the Expressway-E host A record. in context
• SIP over UDP is disabled by default on the Expressway, so a published _sip._udp record does not work unless UDP is enabled. in context

Cite this source record

APA

WarmTransfer. (2021, April 14). Cisco Expressway-E and Expressway-C Basic Configuration Deployment Guide (X14.0) - DNS Records. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-exwy-basic-config-x140-dns-records

BibTeX

@misc{warmtransfer-cisco-exwy-basic-config-x140-dns-records,
  title  = {Cisco Expressway-E and Expressway-C Basic Configuration Deployment Guide (X14.0) - DNS Records},
  author = {{WarmTransfer}},
  year   = {2021},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-exwy-basic-config-x140-dns-records},
  note   = {Cisco Systems, accessed 2026-09-25}
}