ADC PG-PLUS PLL-724 Manual page 50

Subscriber Reported Faults
Conditions Causes
Phone does not faulty subscriber station
instrument
stop ringing
loop length too long
faulty RT
Can not hear,can subscriber problem
not be heard
faulty COLU or RT
40
Procedures
1 If phone stops ringing when using a butt set at the subscriber location, the
subscriber's station internal resistance is too high. Replace phone.
2 If phone does not stop ringing when using a butt set at the subscriber
location, one or both of these conditions exist:
• loop length is too long (refer to Specifications)
• or the RT is faulty
1 Open the RJ-11 test jack at the RT. If audible level is acceptable, the
problem is with subscriber equipment.
2 If audible level is too low at the RT with the RJ-11 test jack lifted, lift the
jumper in the CO between the CO switch and the COTS.
• If audible level is acceptable, replace the COLU or the RT or both.
• otherwise, the problem is in the CO switch
January 6, 2003
SCP-PLL724-010-04H
PLL-724 List 1