COMSPHERE 3550 Series Data Service Units

 

 

 

Table 3-2

 

 

Model 3551 DSU Jumper Straps

Strap

State of

 

Function

Designation

Jumper Strap

 

 

 

 

 

J12

Left

 

V.35 Test Mode Indication:

 

 

 

Left Ð Enables V.35 Test Mode Indication (Pins 1 and 2). This is the

 

 

 

factory default.

 

 

 

Right Ð Disables V.35 Test Mode Indication (Pins 2 and 3).

 

 

 

 

J13

Left

 

EIA-232-D Test Mode Indication:

 

 

 

Left Ð Enables EIA-232-D Test Mode Indication

 

 

 

(Pins 1 and 2). This is the factory default.

 

 

 

Right Ð Disables EIA-232-D Test Mode Indication

 

 

 

(Pins 2 and 3).

 

 

 

 

J20

Left

 

Alarm Monitoring (used with the ±48 Vdc Central Office Power Unit):

 

 

 

Left Ð Disables the ±48 Vdc alarm monitoring function

 

 

 

(Pins 1 and 2). This is the factory default.

 

 

 

Right Ð Enables the ±48 Vdc alarm monitoring function

 

 

 

(Pins 2 and 3); the NMS adapter cable is being used for alarm

 

 

 

monitoring.

 

 

 

 

J21

Right

 

Alarm Monitoring (used with the ±48 Vdc Central Office Power Unit):

 

 

 

Left Ð Enables control of alarm monitoring via the NMS adapter

 

 

 

cable (Pins 1 and 2); the NMS adapter cable is being used for alarm

 

 

 

monitoring.

 

 

 

Right Ð Disables control of alarm monitoring via the NMS adapter

 

 

 

cable (Pins 2 and 3); a standard EIA-232 cable or the NMS adapter

 

 

 

cable is being used for the diagnostic channel. This is the factory

 

 

 

default.

 

 

 

 

3-4

December 1996

3550-A2-GB20-20

Page 37
Image 37
Paradyne manual Model 3551 DSU Jumper Straps, Strap State Function Designation Jumper Strap