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Lars_Nestler's avatar
Lars_Nestler
Brass Contributor
Apr 23, 2020
Solved

Direct Routing Outbound Number

Hello   We are currently testing Teams calling with the anticipation of using it productively for the whole company. The setup with the sbc and users was successfull. However: When a user dials o...
Direct Routing
microsoft teams
PSTN
  • Lars_Nestler's avatar
    Lars_Nestler
    May 17, 2020

    Alright, I have found the answer.

    We had our direct routing numbers configured as: tel:+12345678900;ext=900 so that the user see's his / her internal extension in teams.

    This however, sent out the whole number (as shown above) in the "FROM" address of the SIP package.

    Our SBC was then not able to translate that number (as there were letters) and set the number to the default fallback one.

     

    Hope this helps others, who might have the same issue.

     

LinusCansby's avatar
LinusCansby
MVP
Apr 23, 2020

Lars_Nestler The default number on the SBC? Is that a configuration you have done in your SBC to replace the Caller number with this default number? If you don't have any rules in your SBC to change the caller number it should show the number of User A.

 

Do some tracing on your SBC and see what you send out to your operator, so that you send out the correct number in the SIP INVITE. It could be your ITSP that changed this number for you.