Star Microwave SM Cirius LM, User Manual

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Cirius LM User Manual 2016 Page 7
1.2. Front Panel Interfaces
1.2.1. T1/E1 Ports
The T1/E1 ports are 8-pin modular jacks with standard RJ-48 pinouts as shown in
Figure 5 and Table 1 below. Transport mode is software configurable to support
zero to four T1 channels or zero to four E1 channels (with the remainder of the
capacity allocated to Ethernet transport). Lines are matched to 100 ohm in T1
mode and 120 ohm in E1 mode. “RX” refers to input into IDU T1/E1 port; “TX”
refers to output from the IDU. 75 ohm E1 configurations are also available. Contact
factory for details.
Pin Signal Name
1 RX, Ring, -
2 RX, Tip, +
3 Shield/Return/Gnd
4 TX, Ring, -
5 TX, Tip, +
6 Shield/Return/Gnd
7 NC
8 NC
Table 1 T1/E1 RJ-48 Pinout