Where no MRA shares the Expressway pair or Unified CM cluster, the documented requirement to move the B2B trunk off 5060/5061 does not directly apply, though the neighbor zone and trunk ports must still match.
inferred · Checked 2026-09-25
- Vendor
- Cisco
- Product
- Cisco Unified CM with Cisco Expressway
- Subsystem
- SIP trunk
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Collaboration 14
- Status
- inferred
- Checked
- 2026-09-25
Sources
- Preferred Architecture for Cisco Collaboration 14 Enterprise On-Premises Deployments, CVD - Collaboration Edge — Cisco · tier 2 current vendor documentation · Collaboration Edge > SIP trunk between Unified CM and Expressway-C (conditional wording)
Cite this note
APA
WarmTransfer. (2026, September 25). Setting up business-to-business calling on Cisco Expressway: source note expressway-b2b-setup-no-mra-port-inference. WarmTransfer. https://warmtransfer.net/knowledge/claims/expressway-b2b-setup-no-mra-port-inference
BibTeX
@misc{warmtransfer-claim-expressway-b2b-setup-no-mra-port-inference,
title = {Setting up business-to-business calling on Cisco Expressway: source note expressway-b2b-setup-no-mra-port-inference},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/expressway-b2b-setup-no-mra-port-inference},
note = {Source note expressway-b2b-setup-no-mra-port-inference, checked 2026-09-25}
}