Users in small locations might not like dialing 7 digits to reach the person across the hall. Also, customers want to set up their system, like retail stores, so that the same extension is used for the same department in each store, even if each store uses a gateway connected to a central Communication Manager server.
This is solved using a new special entry on the UDP screen that tells the system to transfer
the leading digits of the calling party’s telephone number to the dialed number. For example, if extension 852-5581 dials 23529, the leading 85 is prepended and 852-3529 is called. However, the station displays all show the long number (852-xxxx), not the shorter dialed number (2xxxx). This is the default behavior. Starting from Communication Manager Release 4.0, you can use the Intra-Location formats on the Dial Plan Parameters screen to display the shorter, dialed numbers.