Incoming DID calls match translation pattern with a Calling Party Transform Mask "91XXXXXXXXXX", this is done so that IP Phone displays missed or received calls with 91 in front for easy call back.
Now, if I call in from a remote destination of User A to User B, IP Phone of User B presents the call with CLID 91??????8652, where 8652 is the internal extension of the caller User A. It actually puts question marks in the CLID. It makes sense because it normally would just present 8652, but because of the 91XXXXXXXXXX calling party transform mask it transforms it to 91??????8652.
I'm wondering if there is a way to resolve this, I want User B to see just 8652 when calls comes in from User A's remote destination.
If I set "Use Calling Party's External Phone Number Mask" in the translation pattern and also set RDP's line appearance external phone number mask to 5555558652, then the call gets presented coming from 9155555558652. Which is not a bad solution, but still not perfect because calling back to 9155555558652 forces the call to go outside while it should just ring 8652 internally. Translating 91555555XXXX to XXXX for outgoing calls is not an option because they sometimes want to test incoming calls to their numbers from inside.
Setting RDP's line appearance external phone number mask to just XXXX doesn't help, it still transforms to 91??????8652.
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