Inter-Tel AXXESS Manual page 1314

Troubleshooting
® ®
INTER-TEL AXXESS
Table 7-7. CO Trunk Troubleshooting Chart (Continued)
Symptom
Other station conversa-
tions can be heard on the
CO trunk (crosstalk)
Outside calls dropped dur-
ing conversation or upon
answering CO trunk
CO trunk cannot be re
seized
Page 7-34
MANUAL VERSION 11.0 – May 2008
Possible Cause
Defective CO trunk(s)
Defective cabling or mis-wired
amphenol connector on the
trunk card
Defective station card
Defective trunk card
Defective CPC or CPU Card
User error (trunk button being
pressed after initial connection
is made)
Defective CO trunk from cen-
tral office
Insufficient loop current sup-
plied by central office
IC-CO Disconnect timer value
is set too short
Defective station instrument
Defective trunk or station card
Defective CPC or CPU Card
CO Reseize feature is dis-
abled
CO Reseize timer is set too
high
User error
Corrective Action
Isolate the trunk(s) with crosstalk by removing the
bridging clips from the CO block. On the telco side
of the block, attach a test set to each trunk and
check for crosstalk. If present, contact the telephone
company.
Using a test set, ensure presence and correct loca-
tion of the CO trunk at the associated CO block.
Replace the associated station card.
Replace the associated trunk card.
See page 7-3 for LED and system voltage informa-
tion. Replace the card if faulty.
Instruct users not to press the trunk button while on
a call. Or, if necessary, set the CO Reseize timer to
a higher value. Default value is 3 seconds. See
page 6-329 in PROGRAMMING. Or, program the
station to disallow CO reseize. See PROGRAM-
MING, page 6-258.
At the CO block, remove the bridging clips for the
trunk. On the telco side of the block, use a test set
to verify the CO trunk connection. Also, move the
CO trunk to a known good CO circuit. If the problem
follows the trunk, contact the telephone company.
Central office must supply 18mA minimum loop cur-
rent.
Ensure timer value is long enough to ignore normal
interruptions in CO loop current. Default value is 0.6
seconds. See page 6-329 in PROGRAMMING.
Replace the station instrument and/or perform the
keyset self-test as outlined in INSTALLATION,
page 3-182.
Replace the associated card.
See page 7-3 for LED and system voltage informa-
tion. Replace the card if faulty.
Check station programming as described on
page 6-198 in PROGRAMMING. If the CO Reseize
option has been disabled, the user cannot reseize a
trunk until it has been disconnected by hanging up
or pressing another trunk button.
Set the timer to a lower timer value. Default value is
3 seconds. See page 6-329
If the station is programmed with the validate
account codes option and the user enters an invalid
Account Code For All Calls Following, calls will not
be allowed at the station until the code is removed
or reprogrammed. See page 5-200
in PROGRAMMING.
in FEATURES.
CO Trunk Issues