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202
Planning your telephony services
PBX system
This setup is for a larger offices which have fewer CO lines than there are telephones. In this case
the lines are pooled, and the line pool is assigned to all telephones. As well, there is a designated
attendant with a telephone that has all lines individually assigned.
Figure 51 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 telephone 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 CO number.
N0008589 3.3
All telephones
are assigned
access to the line
pool for
out-going 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
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