AT&T MERLIN LEGEND Release 2.0 Equipment And Operations Manual page 205

Applications
Platform Requirements
IS Ill is delivered already installed and configured with the applications ordered.
The system consists of an AT&T Master Controller II+ or Master Controller Ill
running UNIX System V Release 3.2.2. Various hardware configurations are
available; see the AT& T Integrated Solution Ill Installation and Maintenance
Guide for details.
If AUDIX Voice Power is installed, an 012 module (with a ring generator) is
required in the system to provide the tip/ring interface.
The number of voice channels required for AUDIX Voice Power depends on the
number of incoming lines/trunks, the number of subscribers programmed for the
system, and the number of busy-hour calls. Table 4-7 shows these
requirements,
Table 4-7, Voice Channels Required
No. of
Channels
Required
2
4
6
8
12
Lines Subscribers
1 to 6 1 to 20
7 to 18
21 to 60
19 to 24 61 to 80
25 to 42 81 to 200
Over 42
201 to 300
Busy-hour
Calls
1 to 20
21 to 60
61 to 80
81 to 200
201 to 300
Integrated Solution Ill (IS Ill)
4-49