Setting The 400Em (Tie Trunk) Module Dip - AT&T MERLIN LEGEND Release 3.1 Installation Manual

Installing the Modules
E&M Mode
Type 1 Standard (default factory setting). This setting is used to
connect two systems through telephone company facilities.
Type 1 Compatible. This setting connects two systems directly
(without using telephone company facilities).
Simplex Mode
Type 5. This setting is used on 4-wire (2-pair) circuits.
400EM (Tie Trunk) Module DIP Switches
During installation of 400EM (Tie Trunk) modules, refer to Table 2–4 and
Table 2–5, and to Figure 2–11 for the correct DIP switch settings for varying
signaling protocols.
Table 2–4. Setting the 400EM (Tie Trunk) Module DIP Switches
Ports
(as numbered in
Figure 2–11)
2 4
3
1
DIP
Switch 1S (Default)
and 1C
Position
Unprotected
E&M Mode
1 ON
2 ON
3 OFF
4 OFF
5 OFF
6
ON
7 ON
8 OFF
9 OFF
10 OFF
Signaling Type
1C and 1S
Protected Simplex
E&M Mode
OFF OFF or ON
OFF OFF or ON
OFF
OFF
OFF
OFF OFF or ON
OFF OFF or ON
OFF
OFF
OFF
Installing the Control Unit
5
Mode
ON
ON
ON
ON
ON
ON
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