Cisco Unified Border Element for 4000 Series ISRs is listed as certified for Direct Routing (non-media-bypass and media bypass), supported from IOS XE Amsterdam 17.2.1r with 17.6.1a recommended.
Checked 2026-09-25
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- certified SBC list
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- list as published 2025-05-06, page updated 2026-05-27
- Checked
- 2026-09-25
Sources
- Session Border Controllers certified for Direct Routing - Microsoft Teams — Microsoft · tier 2 current vendor documentation · Certified SBC vendors table, Cisco rows
Cite this note
APA
WarmTransfer. (2026, September 25). Unified CM and Teams Phone coexistence during a migration: source note cucm-teams-coexistence-cube-certified-isr4000. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-teams-coexistence-cube-certified-isr4000
BibTeX
@misc{warmtransfer-claim-cucm-teams-coexistence-cube-certified-isr4000,
title = {Unified CM and Teams Phone coexistence during a migration: source note cucm-teams-coexistence-cube-certified-isr4000},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-teams-coexistence-cube-certified-isr4000},
note = {Source note cucm-teams-coexistence-cube-certified-isr4000, checked 2026-09-25}
}