Microsoft Teams Phone
Teams Phone enables call-control and Private Branch Exchange (PBX) capabilities in the Microsoft 365 cloud with Microsoft Teams.
134 questions
PSTN to Teams user: why do i need to send the ;ext=### as a suffix in SIP invite?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(163.2, 18%, 25%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMH%3C/text%3E%3C/svg%3E)
Mohamed Hasan Adnan
45
Reputation points
Dear members, This is a strange requirement from Microsoft to use ";ext=###" along with the DID number when calling in to the Teams user. If I have 100s of users with an extension number different from their phone numbers then I would have to setup a dial string rewrite rule for every single DID number being called on my SBC. Is there any workaround for this? Please advice. Regards,
{count} votes
-
Mohamed Hasan Adnan 45 Reputation points
2024-01-25T01:01:40.1266667+00:00 As the below screenshot, MS Teams sends back 404 not found (scroll down how i fixed with rewrite rule
After adding Prefix + and suffix ;ext=313 to the actual number that was dialed from PSTN side then teams able to progress the call. Doing this for every single extension user is not easy.
Sign in to comment