Forum Discussion

Brass Contributor

Sep 15, 2022

Solved

3PIP Phones Teams SIP Gateway - PSTN Number

Hi, We're currently investigating moving our 3PIP phones (Polycom VVX) which are logging in with a MS Teams Common Area Phone accounts. These phones are purely common area phones mostly their only...

godril_
Oct 03, 2022
Dale_LTU

According to Microsoft Docs, all device enabled via SIP Gateway must have DDI. CMIIW
https://learn.microsoft.com/en-us/microsoftteams/sip-gateway-plan

But, you can assign same base DDI to many users including common phone area. To differentiate one to the other, just add ;ext=XXXX. For example, 3 users can be assigned same base DDI +6221397123456 this way:
user 1 -> +622139712345;ext=1001
user 2 -> +622139712345;ext=1002
user 3 -> +622139712345;ext=1003

I am sure it is easy to change all callerid to SBC default DDI.

godril_

Brass Contributor

Oct 03, 2022

Dale_LTU

According to Microsoft Docs, all device enabled via SIP Gateway must have DDI. CMIIW

https://learn.microsoft.com/en-us/microsoftteams/sip-gateway-plan

But, you can assign same base DDI to many users including common phone area. To differentiate one to the other, just add ;ext=XXXX. For example, 3 users can be assigned same base DDI +6221397123456 this way:

user 1 -> +622139712345;ext=1001

user 2 -> +622139712345;ext=1002

user 3 -> +622139712345;ext=1003

I am sure it is easy to change all callerid to SBC default DDI.

Dale_LTU
Brass Contributor
Oct 03, 2022
Thanks godril_

I will give that a try.

Yes should it be easy enough to use a transformation rule on our SBC to change the CallerID - we currently use a transformation rule to transform the CallerID on our Non-DDI accounts from anonymous to our main number, so something similar for these should work.

Thanks