I found a 5 year old post about this but really no resolution.
Is it possible to have multiple CID prefixes retained?
My reasoning: we just added a 2nd main number to track advertising conversions. I’d like a prefix for calls coming in through that number to show up. We’re small enough that I’m leaving it to my team to report good/bad conversions to me.
Check the call event logging under reports and look for the ‘Dialed’ tab. Add this as the DID to ensure that the DID is working. If not, check the incoming register settings for your trunk. Some trunks require "Username:[email protected]/Username". The bold is normally where people go wrong and this stops the DID from working on the PBX.