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Chapter 10.
10.8. MAX MDF WIRING (GENERAL)
The framework of MDF consists of two sides. Front side is called EXCHANGE SIDE
& backside is called LINE SIDE. Backmount frame on EXCHANGE SIDE is of 8x8
pair type i.e. 64 pairs while on LINE SIDE it is of 10x10 pair type i.e. 100 pairs.
Both vertical on EXCHANGE SIDE and LINE SIDE has 10 backmount frames.
Backmount frame on EXCHANGE SIDE is mounted horizontally while on LINE
SIDE it is mounted vertically. Refer Fig. 10.52 for these details. Each vertical is
represented by V1, V2, V3 .... First backmount frame on first vertical in exchange
side is represented as V1/1 and the last backmount frame on first vertical as V1/10.
This is shown in Fig. 10.52. Each backmount on exchange side has provision to
mount 8 disconnection modules and one module label holder. The module label
holder is mounted on the left hand side as viewed from front of exchange side.
Similarly on the Line side module label holder is mounted on the bottom side. 8
cable units (8 pairs each) of 64 pair cable are terminated on 8 disconnection
modules from left to right as viewed from front on exchange side. Eight pairs of one
cable unit are terminated from bottom to top. The termination detail of one 64 pair
cable is shown in Fig. 10.49.
EXCHANGE SIDE DETAILS
There can be different configurations like
a)
BM (lines only)
b)
LM (lines only)
c)
BM (digital trunks only)
d)
BM (analog trunks & digital trunks)
Cable details for these configurations are as below;
Exchange Side Cables
BM (lines only )
LM (lines only)
BM (digital trunks only)
BM
(analog trunks
digital trunks)
BM (Analog + Digital Trunks)
Any combination of Analog & Digital TUs is possible. Digital TU supports only
Digital trunks and Analog TU supports both E&M and TWT trunks.
304
Only 64 pairs cable
- do -
8 pair, single strand shielded cable
24 pair cable for TU-1 8 Pair, single strand
shielded cable for TU-2 (assuming TU-2 to be
digital TU)
64 pair cable for TU3, TU4
C-DOT DSS MAX-XL
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