Host Interface Equipment - Nortel DMS-100 Series Maintenance Manual

Figure 5-1 Frame, shelf, and panel arrangement, OPM-640 (NT8X01AA, AB)
End–access compartment

Host interface equipment

The host interface equipment (HIE) shelf (NT6X1101) contains the DS-1
interface cards (NTX650AA) to connect the DS-1 links to the host controller.
The HIE shelf also contains the following common circuit cards:
•
•
•
Link control cards
The link control cards (LCC) in the HIE shelf converts data between DS-1
format and the DS30 format. The data in the DS-1 format travels to and from
the host office. The data in the DS30 format travels to and from the LCM. The
Fuse panels
LCA-1
LCA-0
HIE
ECU
BAY 0
NT6X60AA—OPM ringing generator (two)
NT6X73AA—Link control card (two)
NT2X70AE—Power converter, 5 V, 12 V (two)
DMS-100 Family OPM Maintenance Manual XPM14 and up
Battery control unit (BCU)
0 0
DS1
Repeater
Cards
RMM
ECU
BAY 1
OPM hardware 5-3
Door switch
RECT1
PCU
RECT0
FSP