Nortel BCM50 Configuration Manual page 34

34 Chapter 2 System telephony networking overview
Figure 1 PBX system
Incoming calls
1
A call comes in on a line.
2
The receptionist answers the call and finds out who the call is for.
3 The receptionist transfers the call to a specific telephone (DN).
4 The person can pick up the call at that DN only.
Outgoing calls
1 User selects the intercom button or dials a line pool access code, which selects a line in the line
pool.
2 The user dials the outgoing telephone number.
DID system
This setup allows you to assign a dedicated phone number to each telephone. The CO assigns a list
of available numbers for each DID (Direct Inward Dial) line. You can change your DN range to
match these numbers, and you use target lines to match each number with a DN.
NN40020-603 NN40020-603
All telephones
are assigned
access to the line
pool for outgoing
calls
Lines are assigned to a line pool
CO line 1
CO line 2
CO line 3
CO line 4
Receptionist
Assigned all lines/
appearance and
ring