Source note · SIP scanning and telephony denial of service
Direct Routing signaling is SIP over TLS: the SBC connects to the Microsoft SIP proxy on port 5061, and the proxy connects to the SBC on the port configured on the SBC.
Checked 2026-09-25
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- SIP signaling ports
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- Plan Direct Routing — Microsoft (Microsoft Learn) · tier 2 current vendor documentation · SIP signaling ports table
Cite this note
APA
WarmTransfer. (2026, September 25). SIP scanning and telephony denial of service: source note sip-scanning-tdos-ms-dr-tls-5061. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-scanning-tdos-ms-dr-tls-5061
BibTeX
@misc{warmtransfer-claim-sip-scanning-tdos-ms-dr-tls-5061,
title = {SIP scanning and telephony denial of service: source note sip-scanning-tdos-ms-dr-tls-5061},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-scanning-tdos-ms-dr-tls-5061},
note = {Source note sip-scanning-tdos-ms-dr-tls-5061, checked 2026-09-25}
}