Motorola DIMETRA MTS 2, Инструкция по установке, настройке и базовому обслуживанию

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MTS 2 and MTS 4 Installation, Con
fi
guration and Basic Service Manual X.21, E1-120 Ω Cabling
X.21, E1-120
Ω
Cabling
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A cable connects the network termination unit (NTU) and the E1/X.21 interface on the MTS
Junction Panel, see
Figure 4-51 for MTS 2 and Figure 4-52 for MTS 4.
The E1 or X.21 (only one of them can be used) connectors on the Junction Panel are connected with the Site
Controller through an internal extension cable. For more information, see
"E1 and Ethernet Cabling" and
"User Alarms/Controls, X.21, RGPS, and GPS Cabling" in Chapter 5, "Interconnection and Internal Cabling" .
Figure 4-51 and Figure 4-52 depicts the newer version of the MTS Junction Panel.
There may be small differences in older con
fi
gurations.
Figure 4-51 E1/X.21 and Ethernet Site Link Connectors on the MTS 2 Junction Panel
6802800U74-N September 2009
4-53