Setting The 400Em (Tie Trunk) Module Dip Switches - AT&T MERLIN LEGEND Release 3.0 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
1
3
D I P
1S (Default)
Switch
and 1C
Position
Unprotected
E&M Mode E&M Mode
1
2
3 OFF
4 OFF
OFF
5
6
7
8 OFF
OFF
9
10
OFF
Signaling Type
1C and 1S
Protected
ON OFF
ON OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
OFF
OFF
Installing the Control Unit 2-35
5
Simplex
Mode
OFF or ON
OFF or ON
ON
ON
ON
OFF or ON
OFF or ON
ON
ON
ON