AT&T Merlin II Feature Module 2 Data Communications Manual page 17

LINE AND STATION JACK
FUNCTIONS
2-6 Identifying Line and Station Modules
FIGURE 2-2 The MERLIN II system modules and their jack positions.
408
— 1
— 2
— 3
J
The numbers in Figure 2-2 correspond to the following list of jack functions:
Power failure jacks: These jacks are used with basic telephones only. In
1
case of a power outage, basic telephones plugged into these jacks become
operational. Do use MERLIN II system voice terminals as power
not
failure telephones.
Outside line jacks:
2 These
telephone company. Y
system and/or a music source to a line jack.
3 Analog station jacks: These
terminals, analog data devices, or accessories only.
Basic telephone jacks: These
4
Digital Station jacks: These jacks
5
devices only.
Line and station modules must be installed in slots on the control unit
sequentially, from left to right, with no empty slots left between modules.
(Slots to the right of the last module can be left empty.) Figure
typical module installation.
drawing labeled "Module Location" on the Master Planning Form,
On the
identify the type of module in each slot on your control unit by writing in
the module type (such as 008D) above the slot number. Keep in mind that
the module in slot 1 of the basic unit must be a 4-Line/8-Analog Voice
Terminal (408) Module or an 8-Analog Voice Terminal (008) Module.
800
400 W/TTR
1
— 2
— 2
— 1
jacks are for the outside lines provided by the
can also connect an optional-loudspeaker paging
OU
jacks are for MERLIN II system analog voice
jacks are for basic telephones only.
are for digital voice terminals or data
012
008D
4
4
shows a
2-1