Currently our system accepts incoming caller ID information (from the PSTN) and passes it on to the appropriate SIP extension phone.
However sometimes we do not get incoming caller ID information because the remote party has decided to with-hold it.
In this instance the SIP extension phone displays “Err”.
Is there a way to make the SIP extension phone display something else like “Private” or “0000” if there is no originating (ie: PSTN) caller ID information?
Thanks in advance.