Figure 4-52 E1/X.21 And Ethernet Site Link Connectors On The Mts 4 Junction Panel; Figure 4-53 Site Link Connector E1 Pinout; Table 4-5 Site Link Connector E1 On Junction Panel - Motorola DIMETRA MTS 2 Installation, Configuration And Basic Service Manual

X.21, E1-120Ω Cabling
Figure 4-52
Table 4-5 and
The E1 connector described in
use Receive 1 and Transmit 1. Be aware that the Pin definitions on the Site Controller are
different from the E1 connector on the Junction Panel.

Figure 4-53 Site Link Connector E1 Pinout

Table 4-5
Pin No.
1
2
4-54
E1/X.21 and Ethernet Site Link Connectors on the MTS 4 Junction Panel
The network termination unit (NTU) in the same building shall provide the necessary
isolation between the X.21/E1 interface and the network, and should be approved for
use by the appropriate agency in the end user country.
Do not remove the supplied caplug and retaining bag from the D-type connector
of the X.21 or E1 cable.
A surge arrestor should be used. For full instructions and guidelines, please refer always to
Motorola Standards and Guidelines for Communications Sites, R56.
Table 4-6 show the pin assignment for E1 and X.21 connection.
Table 4-5
Site Link Connector E1 on Junction Panel
Function
Receive 1 positive
Receive 1 negative
contains two E1 lines. If only one line is needed,
Chapter 4: Hardware Installation
6802800U74-N September 2009