Nortel Networks 150 User Manual

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CallPilot 150 Telephone Administration Guide
Chapter 10
Dialing Translation
About Dialing Translation
Dialing translation is a process by which the number of an incoming call from a public network is 
translated by a translation table into a number that can be recognized and dialed on the local 
network using the Reply feature.
For Dialing Translation to occur, you must create a Dialing Translation Table that recognizes the 
digits of an external number and translates them into a number that can be dialed by the system. 
The business telephone system also consults the restrictions and schedules tables prior to dialing 
the number.
The Dialing Translation Tables are necessary only for the Reply feature. CallPilot does not require 
the tables in order to function normally.
How the Dialing
 
Translation Table works
A phone number is derived from information attached to an incoming Caller ID message. The 
number is then searched for by the CallPilot in the Dialing Translation Table. If the leading digits 
of the telephone number match a Dialing Translation Table Input value (the number CallPilot 
searches for in the Dialing Translation Table), the Output value is substituted for the Input value. 
This change results in a telephone number that can be dialed on the local network. Changing the 
number usually involves removing an area code or inserting an access code, based on the dialing 
rules of the local network. For example, if a local number is prefixed with the long distance code 1, 
it is removed by the Dialing Translation Table.
The Dialing Translation process is immediate so calls do not take any longer to dial. Some 
telephone numbers do not need to be changed before dialing. CallPilot functions without a Dialing 
Translation Table.
Phone number Translation
The Dialing Translation Table must define each possible case where a change is needed to allow 
the number to be dialed on the local network.
The Dialing Translation Table changes Network extensions into numbers that can be dialed on the 
local network. The Network extension form of a phone number is the usual form in which the 
number appears. For example, the phone number 403-555-5050, in its Network extension form, 
must be translated into a number that can be dialed on the local telephone network. The Dialing 
Translation Table follows the rules required to make the call.