SIP devices used with SIP Gateway must not sit behind a corporate HTTP/HTTPS proxy; their http/s traffic must bypass any proxy.
Checked 2026-10-02
Ensure that http/s traffic bypasses any corporate http/s proxy.
- Vendor
- Microsoft
- Product
- Microsoft Teams SIP Gateway
- Subsystem
- network
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Configure SIP Gateway — Microsoft · tier 2 current vendor documentation · Configure SIP Gateway > Before you can configure SIP Gateway > Make sure the SIP devices are not behind a proxy
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting phones signing in through Teams SIP Gateway: source note teams-sip-gateway-troubleshooting-proxy-bypass. WarmTransfer. https://warmtransfer.net/knowledge/claims/teams-sip-gateway-troubleshooting-proxy-bypass
BibTeX
@misc{warmtransfer-claim-teams-sip-gateway-troubleshooting-proxy-bypass,
title = {Troubleshooting phones signing in through Teams SIP Gateway: source note teams-sip-gateway-troubleshooting-proxy-bypass},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/teams-sip-gateway-troubleshooting-proxy-bypass},
note = {Source note teams-sip-gateway-troubleshooting-proxy-bypass, checked 2026-10-02}
}