GTE Omni Si Database Technical Practices Manual

5210TL-130200-1001
START
i-’IF THE PROBLEM IS NOT SOLVED,
REINSERT THE ORIGINAL TRUNK
CARD(S) AND REPLACE THE
ASSOCIATED 
MPB85 CARD.
(SEE NOTE).
(END)
NOTE: See paragraph 
l&5.
Figure 5.9Trunk Operation Troubleshooting Flowchart
8187M-175 

TL-130200-1001Tl -Type Trunk5.4 The Tl-Type Supervisory and Alarm Cards
Maintenance(FB-20718-1A) have buffers which retain the status of the
sense and control points (see Table 5.5). With the maintenance
TTY, maintenance personnel can read or write into the digital
trunk address in the same manner as with the analog trunks.
Refer to Table 5.6 for trunk addresses. Be advised that analog
trunk card locations are preempted from use when 
Tl is
implemented.
When referring to Table 5.5, note that the channel...

5210TL-130200-1001
Channel Unit Removal
5.5 The Tl-tvoe interface cards do not detect removal of a
loopstart 
chainel unit at the CO and use should be avoided.
Table 5.6Trunk to Digital Span: Channel Correlation
ANALOG TRUNK
CARD LOCATION
HARDWAREDIGITAL SPAN
FILESLOTUNIV. POS
ADDRESSCHANNEL
IDENTIFICATIONIDENTIFICATION
_.
19Cl051821X
051922051A
23
051 B24
17c20528
17X0529
18
052A190528
20
055B8
0568
1x
9C605692056A
3056B
4
8187M-l 77 

--TL-130200-1001
Removal of a ground-start channel unit at the CC causes the
GD (Ground-Detected) sense point, bit 7, in the FX trunk sense
word Table (5.5) to become true, making the associated trunk
busy to the system.
Removal of an E 
& M or incoming loop dial channel unit at the far
end causes an incoming seizure to the system. If the system
data base is configured for the trunk circuit as a 
ringdown to the
attendant, the removal of the far-end channel unit causes an
incoming call to the attendant’s...

TL-130200-1001
System alarms are associated with the system’s status as a
slave. If the FB-20922-A Network Clock card should lose
frequency synchronization with the SINX input for more that 2
seconds, a fault code 15 will be generated. When the
FB-20922-A Card regains frequency synchronization on the
SINX input, a response code is generated.
When the RPF and SYS 
LEDs light (Tl-Type Supervisory card),
a power failure has occurred in the CO terminating equipment. A
power failure occurs when a normally...

-!-L-l 30200-l 001
--To test the network clock synchronization, ensure that the 
Tl-type card group is frame-synchronized to the far end. Once this
has been determined and the coaxial cables are properly
connected between the Span Interface card and the Network
Clock card, the SINX input can be cabled. If the 
SINX input
cabled to a span interface card in an active Tl-type group
cannot be selected, then that cable or span interface card is
faulty. This testing can be done with the system off-line. The...

TL-130200-1001
STARTciSYSTEM HAS LOST PARTIAL OR
FULL SUPERVISION IN THE DIGITAL
TRUNK INTERFACE.
IARE
ANY FAULT
CODES PRINTED ONREFER TO SYSTEM FAULT TABLES
THE MAINTENANCE
INO
clA
Figure 5.10Tl-Type Trunk Loss of Supervision Troubleshooting Flowchart (Sheet 1 of 7)5210
8h37 

TL-130200-1001IS THESYSTEMbCOMMON TO THE
SYNCHRONIZED?
YESYESNO
;,PROBLEM STILL
YES
1NO
(--Z---l
1NO
REMOVE AND REPLACE THE
FOLLOWING DIGITAL TRUNK
CARDS ONE AT A TIME. IF THE
TROUBLE STILL EXISTS AFTER
EACH REPLACEMENT, REINSTALL
EACH ORIGINAL CARD.
FB-17192-A 
TlB2FB-17277-A OR 15277-1 SILFB-15280-A LCM.
Figure 5.10Tl-Type Trunk Loss of Supervision Troubleshooting Flowchart (Sheet 2 of 7)
M-l 82
81875210 

TL-130200-1001
PROBLEM STILLYES
Figure 5.10Tl-Type Trunk Loss of Supervision Troubleshooting Flowchart (Sheet 3 of 7)5210
8A37M-183 

TL-130200-1001D
70
B---CORRECT?
YESTHE FB-20718-l
NO
IS THE PROBLEM
RESOLVED?
IS THE
PROBLEMNO
‘IREPLACE 
f MB CARD.
Figure 5.10Tl-Type Trunk Loss of Supervision Troubleshooting Flowchart (Sheet 4 of 7)
5210