Hello,

This is question on PBX behavior, what is the right thing to do, and how do PBX's generally behave.

If a user on a phone, dials a number, which happens to be configured on the same phone system (for example another tenant), there are two options:
  1. The PBX notices this, and directly connects the phone to the DID on that system
  2. The PBX sends the call out on the SIP trunk, and the provider-routing sends the call back as an incoming call.
What are the pros and cons of each option? How do PBX's generally behave?

Thanks,
Antonio