User manual
DEFINITY ECS Release 8.2 Maintenance for R8.2csi 
555-233-119  Issue 1
April 2000
 Maintenance Objects
3-1160TTR-LEV (TTR Level) 
3
2. The total number of Dual Tone Multifrequency Receiver Ports (DTMR-PTs) 
[(also known as Touch Tone Receiver (TTRs)], currently in service is less 
than the administered threshold number.
The TTR Level maintenance performs a monitoring function. When one of the 
above events occurs, the switch reports it. At this point, the system is still 
operating properly, but the system capacity is reduced.
The above events can occur if:
1. The threshold number of General Purpose Tone Detector Ports 
(GPTD-PTs) for service or the threshold number of Dual Tone 
Multifrequency Receiver Ports (DTMR-PTs) for service is administered 
incorrectly on a Tone Detector circuit pack.
2. Too many General Purpose Tone Detector Ports (GPTD-PTs) or Dual Tone 
Multifrequency Receiver Ports (DTMR-PTs) have been taken out-of-service 
for a Tone Detector circuit pack (that is, the ports have been either 
busied-out by system technician or maintenance has taken them 
out-of-service).
3. Too many ports have been taken out-of-service for a Call Classifier circuit 
pack (that is, the ports have been busied-out by system technician or 
maintenance has taken them out-of-service).
4. There is an insufficient number of General Purpose Tone Detector Ports 
(GPTD-PTs) or Dual Tone Multifrequency Receiver Ports (DTMR-PTs) in the 
system for a Tone Detector circuit pack. Or there is an insufficient number 
of ports in the system for a Call Classifier circuit pack.
Repair Procedure for the TTR Level Maintenance 
Object
The following is a step-by-step approach to resolve the TTR Level maintenance 
alarm.
1. Execute the 
display error
 command. Determine if the TTR-LEV warning 
alarm is raised against the GPTD-PT level, the DTMR-PT level, or the 
CLSFY-PT level. In the Hardware Error Log Table, the error type field of the 
TTR-LEV MO has a value of 2 for DTMR-PT level, a value of 4 for GPTD-PT 
level, or a value of 6 for CLSFY-PT level.
Perform the actions described in Step 2 for the DTMR-PT, the GPTD-PT, or 
the CLSFY-PT.
2. Issue the 
change system-parameters maintenance
 command. Check 
the administered value(s) for TTRs and CPTRs for service on the Tone 
Detector circuit packs or for CCRs on the Call Classifier Port (CLSFY-PT) 
circuit pack. If a threshold value is set too high, change it to a lower value 
via the 
change system-parameters maintenance
 command and wait 
one minute for the alarm to clear.










