MS Teams orig/term carrier?

Despite having worked for an ILEC in network ops for 10yrs, I can’t figure out how to answer this without an SS7 sniffer (which I obviously no longer have, nor access to an SSP or SCP).

What 3rd-party carrier(s), if any, does Microsoft use to originate & terminate MS Teams-to-PSTN voice calls in Canada?

Pointers to rabbit holes welcome, if you think there’s an actual answer at the end ;-).



Adam Thompson
Consultant, Infrastructure Services
100 - 135 Innovation Drive
Winnipeg, MB, R3T 6A8
(204) 977-6824 or 1-800-430-6404 (MB only)

Depends. If the customer is using Direct Routing, then it’s whomever is providing their SIP trunk. If the customer is using Calling Plans, then it’s