User`s guide

DIVA T/A ISDN Modem Users Guide
Page 122
Multiple Subscriber Numbering
Set the primary number of Phone Port 1 to 555-1111;
Set the ‘Second Number’ field of Phone Port 1 to 555-3333;
Set the primary number of Phone Port 2 to 555-2222.
In this scenario, calls placed to your mobile phone will be forwarded to 555-3333 if the
mobile phone is not on.