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ADCP-80-314 • Issue 6 • January 2001 • Section 3: Operation
This procedure is used to restore service on a failed circuit without interrupting service when
patches are installed and removed. This illustration represents the near end office. A similar
corresponding far end office patch must also be performed, but is not shown.
STEP
PROCEDURE
1
Select a standby facility where communication between the two interrupted sites will be
temporarily routed to.
2
At both sites interrupted by the Failed Facility, patch the Office Equipment to Standby
Facility using patch cords as follows:
(a) Connect the Office Equipment MON jack x to a bridging repeater IN jack y.
(b) Connect the bridging repeater OUT z jack to the Standby Facility IN jack {.
Perform steps 2(a) and 2(b) at corresponding far end office before proceeding.
(c) Connect the Standby Facility MON jack | to a bridging repeater IN jack }.
(d) Connect the bridging repeater OUT jack ~ to the Office Equipment IN jack .
Perform steps 2(c) and 2(d) at corresponding far end office before proceeding.
Insert a 75 ohm terminating plug into the Standby Facility OUT jack €.
3
Insert a 75 ohm terminating plug into the Office Equipment OUT jack .
4
Perform steps 3 and 4 at corresponding far end office.
5
Service is now temporarily restored between the interrupted sites.
6
After the Failed Facility is repaired, remove patch cords in reverse order as follows:
Remove the 75 ohm termination plug from the Office Equipment OUT jack .
7
Remove the 75 ohm termination plug from the Standby Facility OUT jack €.
8
Perform steps 7 and 8 at corresponding far end office before proceeding.
9
Remove patch cords between Office Equipment and Standby Facility as follows:
(a) Remove Office Equipment IN jack to bridging repeater OUT jack ~.
(b) Remove bridging repeater IN jack } to Standby Facility MON jack |.
Perform steps 9(a) and 9(b) at corresponding far end office before proceeding.
(c) Remove Standby Facility IN jack { to bridging repeater OUT jack z.
(d) Remove bridging repeater IN jack y to Office Equipment MON jack x.
Perform steps 9(c) and 9(d) at corresponding far end office.
Page 3-4
2001, ADC Telecommunications, Inc.
IN-SERVICE PATCHING TO BYPASS A FAILED FACILITY
Warning: Reverse order must be followed exactly to avoid another interruption
when removing in-service patch!
PROCEDURE 3
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