Forum Discussion

Copper Contributor

Jan 13, 2021

Teams Business Voice and extensions

I am looking for some assistance if anyone can help out. I am migrating our existing phone system to Business Voice and I am running into some issues getting extensions used how they used to be. ...

Copper Contributor

Jan 15, 2021

Thanks for the reply, internal extensions are quite as big of a deal if we just use contacts to call but do you have any recommendations for external callers reaching users via extension?

godril_

Brass Contributor

Apr 04, 2021

Not sure if you still need this, but in my case, I am utilizing unused -MobilePhone ext. (You will be required to install MSOnline module):

---------------------------------------------------------

$cred = Get-Credential
Connect-Msolservice -Credential $cred
Set-MsolUser -MobilePhone ext=1001 -UserPrincipalName user@domain.tld
---------------------------------------------------------

This way, user@domain.tld can be reached through Auto Attendant by dialling 1001, given the Auto Attendant setting is set to reach user by number.

Michael_Smith2135
Copper Contributor
Aug 03, 2021
godril_

Just a brief FYI to advise that this *does* work, but that you have to give Microsoft's back-end some time to process. Additionally, I was able to add the ext=#### by simply logging into the M355 admin account and adding the information I needed in the field. Again, it look some time for Microsoft to apply those changes, so be patient.

I can also confirm that while it does work on the "dial by extension" setting in Auto Attendant, it doesn't seem to work for dialing numbers internally.
- RRamalC
  Copper Contributor
  May 12, 2022
  A question: In the company where I work, the use of 7-digit extensions (XXXXXXX) is required. Is it possible to implement this range? For example: phone number "+34YYYYYYYYY;ext=XXXXXXX.
  Thanks for your reply.
  - M365_Teams
    Copper Contributor
    Mar 14, 2023
    Hi,
    Yes that can be done but try to keep that 7 digit extension orgwide. 7 digit extensions should be unique and you can give the corresponding main number along with it. AA can handle those calls and you can cascade them if needed.