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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
2
1
4
3
Ports DIP
Signaling Type
(as numbered in
Switch
1S (Default)
Figure 2-11)
Position
and 1C
1C and 1S
5
Unprotected
Protected
Simplex
E&M Mode
E&M Mode
Mode
1
ON
OFF
OFF or ON
2
ON
OFF OFF or ON
3
OFF
OFF
ON
4
OFF OFF
ON
5
OFF
OFF
ON
6
ON
OFF
OFF or ON
7
ON
OFF OFF or ON
8
OFF OFF
ON
9
OFF
OFF
ON
10
OFF
OFF
ON
Installing the Control Unit 2-35