Pin assignment of the 120-ohm E1 trunk cable on the MA5616

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For the pin assignment of the 120-ohm E1 trunk cable on the MA5616, visit Click here.

Other related questions:
Can the U1980 use the 120-ohm balanced E1 cable
The U1980 supports 120-ohm balanced E1 cable access. If the cable is a 75-ohm unbalanced one, use the transfer box to convert 75-ohm unbalanced E1 signals into 120-ohm balanced E1 signals so as to meet the requirements for interconnection using the E1 trunk.

How to convert the U1900 E1 cable from 75-ohm to 120-ohm?
For details, see chapter 7 "Connecting the Signal Cables" in the eSpace U1980 V200R003C00 Quick Installation Guide .

What are the pin assignments of the digital trunk cables of the U1900 unified gateway?
For details, see Reference > Pin Assignment Reference > E1/T1 Trunk Cable Pin Assignments in the eSpace U1900 Series Unified Gateway Product Documentation.

What are the pin assignments after conversion from unbalanced to balanced for the E1 port of the BNC connector on the U1900 unified gateway E1/T1 trunk
After the unbalanced cable of the E1 port is converted to a balanced cable, the pin assignments are as follows: BNC: RX <-->RJ45: 1 and 2 BNC: TX <-->RJ45: 4 and 5 For more information, see the Quick Installation Guide of the U1900 series unified gateway.

Pin assignments for converting unbalanced into balanced for the E1 port on the U1980
After the unbalanced cable of the E1 port is converted into a balanced cable, the pin assignments are as follows: BNC: RX <--> RJ45: 1/2 BNC: TX <--> RJ45: 4/5

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