Nortel DMS-100 Series Maintenance Manual page 43

Figure 2-11 POTS line drawer NT6X05AA, circuit card location
Drawer front
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15
Bus interface card NT6X54
Bus interface card (NT6X54AA)
The BIC card is at the front of the line drawer, behind the front faceplate. The
BIC card connects to the two LSGs (64 line cards) in the drawer where it is
installed. In addition to connecting its two 32-channel LSGs to line drawers,
the BIC performs the following functions:
•
•
•
Line circuit cards
scans line circuits for presence of a hook switch change or message
(interpretation of dialed digits)
sends signals through a ringing multiplexer to control the relays in the
power converter to select ringing and ANI/coin voltages
monitors line drawer activity for maintenance
DMS-100 Family NA100 Star Remote System XPM15 and up
Star Remote System hardware 2-23
Line subgroup
Connectors for
flexible cables
Drawer rear
16–31
Odd
LSG
00–15
16–31
Even
LSG
00–15