DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-429CO-TRK (Analog CO Trunk)
9
Incoming Call:
1. CO Off-Hook (Seizure): CO applies ground on Tip and applies ringing
voltage
PBX Response: Make trunk busy for outgoing calls
2. CO Ringing: CO applies ringing voltage
PBX Response: Detect ringing, ring destination
3. PBX Off-Hook (Answer Message): Close loop
CO Response: Trip ringing, provide loop current
4. PBX On-Hook first (Drop Message): Open the Tip-Ring Loop, no loop
current
CO Response: Open circuit on Tip
5. CO On-Hook first (Disconnect): Open circuit on Tip, no loop current
Error Log Entries and Test to Clear Values
Table 9-179. CO Trunk Error Log Entries
Error
Type Aux Data Associated Test
Alarm
Level
On/Off
Board Test to Clear Value
0
1
0 Any Any Any test port
UUCSSpp
sh r 1
1 (a) 57347 None
15 (b) any Port Audit Update
Test (#36)
18 0 busyout trunk WARNING OFF release trunk
grp#/mbr#
130(c) None WARNING ON test port
UUCSSpp
sh r 2
257 (a) 50176 None
513 (a) 57364 None MAJ/MIN/
WRN
2
ON
769 (a) 57392 None MAJ/MIN/
WRN
2
OFF
1025 (e) Any Demand Diagnostic
Test (#3)
MAJ/MIN/
WRN
2
OFF test port
UUCSSpp
sh r 2
1281 (e) Any Demand Diagnostic
Test (#3)
MAJ/MIN/
WRN
2
ON test port
UUCSSpp
sh r 3
1537 Dial Tone Test (#0) MAJ/MIN/
WRN
2
OFF test port
UUCSSpp
l r 2
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