Source note · IPv6 for voice and UC platforms
For Teams cloud voice network settings (Location-Based Routing, dynamic emergency calling), an enterprise with both IPv4 and IPv6 internet-facing external addresses must add both as trusted IP addresses, because the match depends on which IP version the client's packet uses.
Checked 2026-10-02
If the enterprise network has both IPv4 and IPv6 internet accessible external IP addresses, you must add both as trusted IP addresses.
- Vendor
- Microsoft
- Product
- Microsoft Teams
- Subsystem
- Network topology / trusted IPs
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Network settings for cloud voice features — Microsoft · tier 2 current vendor documentation · Section 'Trusted IP address'
Cite this note
APA
WarmTransfer. (2026, October 2). IPv6 for voice and UC platforms: source note ipv6-voice-teams-trusted-ip-both-families. WarmTransfer. https://warmtransfer.net/knowledge/claims/ipv6-voice-teams-trusted-ip-both-families
BibTeX
@misc{warmtransfer-claim-ipv6-voice-teams-trusted-ip-both-families,
title = {IPv6 for voice and UC platforms: source note ipv6-voice-teams-trusted-ip-both-families},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/ipv6-voice-teams-trusted-ip-both-families},
note = {Source note ipv6-voice-teams-trusted-ip-both-families, checked 2026-10-02}
}