User manual
DEFINITY ECS Release 8.2 Maintenance for R8.2csi 
555-233-119  Issue 1
April 2000
Maintenance Commands 
2-30change system-parameters maintenance 
2
Output (Page Two)
The following example shows the output from 
page 2
 of the 
change 
system-parameters maintenance
 command.
Field Descriptions (Page Two)
Minimum Maintenance Thresholds (Before Notification)
 TTRs
When the number of touch tone receivers (TTRs) in service falls 
below this number (4 to 200), a WARNING alarm is raised against 
TTR-LEV. These are also known as dual-tone multifrequency 
receivers (DTMRs). There are 4 TTRs on each TN748, TN718, 
TN420, or TN756; TN2182 and TN744 (suffix C or later) each 
have 8 TTRs. To alarm the first occurrence of a TTR being taken 
out of service, set this field to the total number of TTRs in the 
switch.
 CPTRs
When the number of call progress tone receivers in service falls 
below this number (2 to 100), a WARNING alarm is raised against 
TTR-LEV. These are also known as general purpose tone 
detectors (GPTDs). There are 2 CPTRs on each TN748, TN718, 
TN420, or TN756; TN2182 and TN744 (suffix C or later) each 
have 8 CPTRs. To alarm the first occurrence of a CPTR being 
taken out of service, set this field to the total number of CPTRs in 
the switch.
 change system-parameters maintenance Page 2 of 3
 MAINTENANCE-RELATED SYSTEM PARAMETERS
 MINIMUM MAINTENANCE THRESHOLDS ( Before Notification )
 TTRs: 4 CPTRs: 2 Call Classifier Ports: _ 
 MMIs: 0 VCs: 0
 TERMINATING TRUNK TRANSMISSION TEST (Extension)
 Test Type 100: Test Type 102: Test Type 105: 
 ISDN MAINTENANCE
 ISDN-PRI TEST CALL Extension: _____ ISDN BRI Service SPID: _____
 DS1 MAINTENANCE
 DSO Loop-Around Test Call Extension: ____
 SPE OPTIONAL BOARDS
 Packet Intf1? y Packet Intf2? n Packet Intf3? n
 Bus Bridge:____ Inter-Board Link Timeslots Pt0:_ Pt1:_ Pt2:_ 










