Figure 5-26 Example Of A Balun; Table 5-2 E1 Or T1 Patch Panel Pin Outs - Motorola PTP 600 series User Manual

Installing an E1 or T1 interface

Table 5-2 E1 or T1 patch panel pin outs

E1 or T1
drop cable
RJ45 pin
number
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Baluns
The patch panel may include Baluns for transmission over 75 Ohm co-axial unbalanced
lines. Such equipment should conform to the requirements of ITU G703. An example of
a Balun is shown in
75 Ohm cable to be converted to a balanced form for transmission over a 120 Ohm
signal balanced twisted pair. The balancing of E1/T1 120 Ohm signals is illustrated in
Table 5-2.

Figure 5-26 Example of a Balun

5-52
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Connector 120 Ohm
Pinout signal balanced
Signal twisted pair
Name RJ45 pin
number
E1T1A_TX- Pin 2
E1T1A_TX+ Pin 1
E1T1A_RX- Pin 5
E1T1B_TX- Pin 2
E1T1B_TX+ Pin 1
E1T1A_RX+ Pin 4
E1T1B_RX- Pin 5
E1T1B_RX+ Pin 4
Figure 5-26. It allows the transmit and receive data carried over a
Chapter 5 Installation
120 Ohm Telecoms
signal channel
balanced
twisted pair
description
Rx Ring
Rx Tip
Tx Ring
Rx Ring B
Rx Tip B
Tx Tip
Tx Ring B
Tx Tip
phn-0896_012v000
Jul 2010
A
A
A
A
B