Solved Strange Inbound CNAM/CID from Voip.ms

[cparker_RCT]

I have a customer who is using Voip.ms for their trunk for a long while now.
No apparent changes to trunking or routing have occurred on our side. However as of 10/30/2020 inbound CNAM/CID is being presented as

[owner's cell number] [actual cnam string] (CID number)

I've checked the settings under Contacts that prepends the trunk/rg/queue, and that is disabled.
The trunk template is virgin, except for required auth & DID info.

This is a real head scratcher and I've also opened a ticket with voip.ms in the event they decided to make a change on their side.

 

[cparker_RCT]

Upon doing a packet capture. It does show that voip.ms is sending the CNAM, prepended with the customer's cellular number. Sounds like a them problem to me.

 

[cparker_RCT]

Was a setting my customer applied on the voip.ms side. Case closed.

 

[JohnS_3CX]

Thanks for updating the thread, and glad to hear it was resolved!