NEC Univerge sv8500 Manual page 2742

A
Set the corresponding switch of each DRE card
UP (ON), referring to the table below.
Switch setting for remote loop-back check
DRU/DAU
SN880 DRE-A
SN880 DRE-B
SN904 DREA-B
SN877 DRE-B
SN885 DRE-A/B
SN886-DRE-A/B
SN887 DRE-A/B
SN905 DREB-B
SN8061 DREH-A
SN8063 DREJ-A
SN8064 DREK-A
Set the transmission equipment to remote loop-
back mode.
Lamps on the DRE card are indicating as follows.
• LINK (G): OFF (or may flickering)
• ALM (R): ON, flashing, or OFF
Lamps on the DRE card are indicating as follows.
• LINK (G): ON, flashing, or OFF
• ALM (R): ON (or may be flickering)
END
CIRCUIT
SWITCH NAME
CARD NAME
PZ-CC63 SW1-6, SW1-7
PZ-CC63-B SW61-6, SW61-7
PZ-CC93-A SW61-6, SW61-7
PZ-CC79/
SW71-6, SW71-7
PZ-30ELCP
PZ-CC94/
SW71-6, SW71-7
PZ-23ELCN
PZ-CC95/
SW71-6, SW71-7
PZ-30ELCR
PZ-30ELCR SW71-6, SW71-7
PZ-30ELCU SW71-6, SW71-7
CHAPTER 2
FAULT : The signal link channel of the DLI/
FAULT • The transmission equipment is faulty.
• The transmission line between the
VOL.3-255
TERMINAL-RELATED DEVICES
DAI is not being transmitted transpar-
ently by the transmission equipment.
(1) Check the transmission equip-
ment.
(2) The DLI/DAI card and the DRE
card in the DRU/DAU do not
match with the switch settings for
signal link channel and for trans-
mission speed of the signal link
channel.
Check the transmission equipment.
DRU/DAU and the transmission
equipment is faulty.
Check the cable between the DRU/
DAU and the transmission equip-
ment.