AT&T MERLIN LEGEND System Reference Manual page 464

System Applications
Hardware Requirements
3-32 MERLIN MAIL Voice Messaging System
Program VMI loop-start ports for the MERLIN MAIL Voice Messaging System
for "reliable" far-end disconnect.
Specify the touch-tone duration and interval between digits in codes sent
between the MERLIN MAIL Voice Messaging System and the
communications system.
Specify the number of rings before a call transferred by the MERLIN MAIL
Voice Messaging System is sent to the backup position (system operator).
Specify that telephone company dial tone must be provided for intercom dial
tone.
Assign Privacy for each station jack used to connect the MERLIN MAIL Voice
Messaging System.
Assign call restrictions to each station jack used to connect the MERLIN
MAIL Voice Messaging System.
When the Automated Attendant is used only for Night Service:
If the lines/trunks set for answering by the Automated Attendant appear at
other stations, set the "no ring" option for the other stations.
Assign the dummy station to a Night Service group for each system
operator position.
Assign the dummy station to a coverage group and assign the VMl calling
group to cover that coverage group.
Specify the VMl ports that provide Automated Attendant to be Automated
Attendant ports.
Specify immediate answer (one ring) for the VMI ports.
Specify the dummy station to have a Class 15 mailbox (Class 15
mailboxes have Automated Attendant instead of Call Answer).
Specify the business schedule for the MERLIN MAIL Voice Messaging
System.
MERLIN MAIL Voice Messaging System unit and power cords
remote maintenance device (with a wall-mount transformer)
modem cable with a 9-pin connector at one end and a 25-pin connector at
the other end to connect the remote maintenance device to the serial port on
the MERLIN MAIL Voice Messaging System unit
D4BU modular cords (2 for a 2-port system or 4 for a 4-port system, plus 1
for the remote maintenance device)
012 basic telephone module
Note: Additional touch-tone receivers (TTRs) may be needed to allow the
012 module to handle a large number of voice connections.
Figure 3-8 shows the connection of a MERLIN MAIL Voice Messaging System
unit to the control unit.