Extension is ringing to the another phone

[sienz]

We have a remote office with BCM50 and has this weird problem. We just found out that one of our extension is no longer ringing to this assigned phone and it ringing to the other phone.
From example:
Phone A has extension 5214. It used to be ringing fine when someone called from internal/external.

Now If someone call this number internal/external it will ring to phone B(ext. 5289) but it will reach 5214

How can we check what set DN is being answered by this phone? I have checked that this phone is not forwarded.

 

[jsaad]

press feature *0 and then the intercom key to verify extension number

 

[Crowtalks]

Also if the remote is in a network, check and see what target line is assigned to each of the problem phones (the one that is ringing and the one that is suppose to).

Check the received number data in the target line(s) to make sure it hasn't changed.

NCSS NCTS NCTE