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4.1 Troubleshooting
234 Installation Manual
231 LPR alive check error • Optional service card
malfunction: DHLC, DLC,
CSIF, T1, E1, BRI, PRI,
OPB3, CTI-LINK, E&M,
IP-GW, DID, SLC8, IP-
EXT, LCOT
• Back board malfunction
• MPR card malfunction
• See if the corresponding optional
service card is installed properly
• Pull out and re-insert the
corresponding optional service card
• Press the Reset Button
• Replace the corresponding optional
service card
• Replace the back board (be sure to
turn off the Hybrid IP-PBX when
replacing)
• Replace the MPR card (be sure to turn
off the Hybrid IP-PBX when replacing)
232 MPR-LPR
communication error
233 LPR data check error
234 DPLL clock failure
235* CS clock failure • Optional service card
malfunction: CSIF
• Replace the corresponding optional
service card
250* T1/E1 DSP failure • Optional service card
malfunction: T1, E1
• See if the corresponding optional
service card is installed properly
• Replace the corresponding optional
service card
251 MSG DSP failure • Optional service card
malfunction: MSG
300* Digital trunk out of
synchronization
• Network (digital trunk)
malfunction
• Optional service card
malfunction: PRI, T1, E1
• Wrong A/B switch setting:
PRI, T1, E1
• Wrong termination switch
setting: PRI30, E1
• Check the signals from the network
• Check the cable
• See if the A/B switch is set to A on the
corresponding optional service card
• See if the termination switch is set
properly on the corresponding optional
service card: 120 Ω when using RJ45
connector; 75 Ω when using BNC
connector
• See if the corresponding optional
service card is installed properly
• Replace the corresponding optional
service card
301* Digital trunk RAI
reception
302* Digital trunk AIS
reception
303* Multiframe out of
synchronization
304* Frame error
305* Data Link failure • Data link between the CS
and CSIF card or DHLC/
DLC card failed
• Data link between the
network and PRI/BRI card
failed
• Data link between the
network and IP-GW card
failed
• Check the connection between the CS
and CSIF card or DHLC/DLC card
• Check the connection between the
network and PRI/BRI card
• Check the connection between the
network and IP-GW card
Error Code Error Message PROBABLE CAUSE SOLUTION