The DNS zone's Include address record setting defaults to Off; when On, the Expressway queries A/AAAA records if NAPTR and SRV lookups fail, which can make the Expressway believe a search succeeded when the call will then fail.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Cisco Expressway
- Subsystem
- DNS zone
- Deployment
- on-premises
- Region
- not restricted
- Release range
- X15.4; current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- Cisco Expressway Administrator Guide (X15.4) - Zones and Neighbors — Cisco Systems · tier 2 current vendor documentation · Zones and Neighbors > DNS zone settings > Include address record
Cite this note
APA
WarmTransfer. (2026, September 25). Setting up business-to-business calling on Cisco Expressway: source note expressway-b2b-setup-include-address-record. WarmTransfer. https://warmtransfer.net/knowledge/claims/expressway-b2b-setup-include-address-record
BibTeX
@misc{warmtransfer-claim-expressway-b2b-setup-include-address-record,
title = {Setting up business-to-business calling on Cisco Expressway: source note expressway-b2b-setup-include-address-record},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/expressway-b2b-setup-include-address-record},
note = {Source note expressway-b2b-setup-include-address-record, checked 2026-09-25}
}