Anda Telecom FE1/V.35 Посібник користувача - Сторінка 7
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Please check the power polarity carefully, and connect after everything is
confirmed. Otherwise the equipment may be caused the forever damages
and we won't take any responsibility because of this!
2.2.2 E1 Interface
E1 75
75Ω unbalanced E1 interface connector are BNC connector, RX indicate
E1 input, TX indicate E1 output;
120
balanced E1 interface connector is RJ45 connector, the pin
Ω
assignment defined as below:
120Ω balanced E1 interface pin assignment:
PIN
Definition
Table 3. Pin assignment of 120Ω balanced E1 interface
2.2.3 V.35 Interface
The DB25 Female connector in the rear panel is V.35 data interface:
User Manual
Fig 5. Sketch map of DC-48V connection
/120
switch
Ω
Ω
STATE
120 Ω balanced interface
75
Table 2. Definition of E1 75 /120
Fig 6. Sketch map of RJ45 connector
1
2
3
TxD+
TxD-
75 /120
INTERFACE
Ω
Ω
un
balanced interface
Ω
switch
Ω
Ω
4
5
RxD+
RxD-
6
7
8
7-20