Call Forward to a 3digit number

Hi @Alex_z 

Are you asking how to specify an external phone number, followed by a pause and an extension number of three digits at that location?

The addition of programming an extension number following an external direct dial number is not currently support in Zoom Phone. You could always submit an enhancement feature request at zoom.us/feed  

I'm sorry, I don't know what SBC refers to!

I hope that helps! 

Hmm, I wouldn't be surprised if Zoom expects "external number" to be a PSTN DID only.

Haven't worked with SBCs and Zoom, so can't help there though I wonder if one can use Routing Rules for this?

Hi Alex,

I am assuming your Premise Peering - PBX trunk is up ? Where are you trying to enter the 3 digit extension. If all's setup, you should be able to call using Zoom phone. 

If not, You can add the 3 digit number as an "external contact" example Analog_extension = 123. Here is the article if you are not familiar: https://support.zoom.us/hc/en-us/articles/360037050092-Creating-a-shared-directory-of-external-contacts

After this, You can forward a user to an external contact.