Figure 4-81. Noise burst on a local subscriber circuit, fault isolation flow chart (sheet 1 of 3).

TM 11-5895-1012-10

encountered, proceed to (6) below.

(3) Notify local maintenance personnel of the

problem and request the multiplex equipment be

is local. If the fault is

trouble by substituting for the defective channel

equipment. If the noise is found to be across the entire

group, consider patching at the group level, replacing

defective equipment, or if the outage may be long in

duration, (i.e., longer than 10 minutes), rerouting cir-

cuits in accordance with established procedures and

at this point indicates the fault lies between the

level patch panel and the signal source. This

(5) After the fault is cleared, restore any rerouted

Figure 4-81. Noise burst on a local subscriber circuit, fault isolation flow chart (sheet 1 of 3).