11
d
c
Assembling the RJ48C Connector (for 120-ohm E1 Cables)
The 75-to-120 ohm E1 trunk balun box can convert 75-ohm unbalanced single-ended
signals of the device to 120-ohm balanced differential signals so that the device can
connect to a variety of peer devices through E1 trunks. If the peer connector is not
RJ48C, you can reassemble a RJ48C connector by referring to the pin assignment. If
you do not have a RJ48C connector, use a RJ45 connector instead.
Assembling the RJ11 Connector (for High-Density User Cables)
The high-density user cable delivered with the device has no RJ11 connector assembled.
If you need a RJ11 connector, nd the wire pair in the following table, strip off the jacket
of the twisted-pair cable, insert the twist pair into the middle pins of the RJ11 connector,
and use a crimping tool to crimp the connector. The following table describes the pin
assignment of high-density user cables when they connect to the ASI and OSU boards.
75-ohm Signal Side
Pin Foot
Port
120-ohm Signal Side
Pin Foot
RX+/RX- RX IN 4/5
TX+/TX- TX OUT 1/2
Pin Foot Tape Wire Pair Port (ASI) Port (OSU)
36/35
Blue
Blue/White FXS-0 FXO-0
38/37 Orange/White FXS-1 FXO-1
40/39 Green/White FXS-2 FXO-2
42/41 Brown/White FXS-3 FXO-3
44/43 Gray/White FXS-4 FXO-4
46/45 Blue/Red FXS-5 FXO-5
48/47 Orange/Red FXS-6 FXO-6
50/49 Green/Red FXS-7 FXO-7
2/1 Brown/Red FXS-8 FXO-8
4/3 Gray/Red FXS-9 FXO-9
6/5 Blue/Black FXS-10 FXO-10
8/7 Orange/Black FXS-11 FXO-11
10/9 Green/Black FXS-12 --
12/11 Brown/Black FXS-13 --
14/13 Gray/Black FXS-14 --
16/15 Blue/Yellow FXS-15 --
54/53
Orange
Blue/White FXS-16 FXS-0
56/55 Orange/White FXS-17 FXS-1
58/57 Green/White FXS-18 FXS-2
60/59 Brown/White FXS-19 FXS-3
62/61 Gray/White FXS-20 FXS-4
64/63 Blue/Red FXS-21 FXS-5
66/65 Orange/Red FXS-22 FXS-6
68/67 Green/Red FXS-23 FXS-7
20/19 Brown/Red FXS-24 FXS-8
22/21 Gray/Red FXS-25 FXS-9
24/23 Blue/Black FXS-26 FXS-10
26/25 Orange/Black FXS-27 FXS-11
28/27 Green/Black FXS-28 --
30/29 Brown/Black FXS-29 --
32/31 Gray/Black FXS-30 --
34/33 Blue/Yellow FXS-31 --
DB68B
75-to-120 ohm E1 trunk
balun box
High-density user cable
(DB68B connector)
Pos.1
Pos.68
Cable pairs
Adhesive
tape
RJ11
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