Huawei Quidway Eudemon 200 - Page 86

Installation Manual
Quidway Eudemon 200 Firewall Appendix A Specifications of Interface Cables
A-5
Table A-6 4E1 conversion cable pinouts
DB25 DB15
Pinout Signal Pinout Signal
Serial
number
2 TxR4 2 TxRing
16 RxSD4 7 RxShield
14 RxT4 8 RxTip
1 TxT4 9 TxTip
3 TxSD4 10 TxShield
15 RxR4 15 RxRing
4
5 TxR3 2 TxRing
19 RxSD3 7 RxShield
17 RxT3 8 RxTip
4 TxT3 9 TxTip
6 TxSD3 10 TxShield
18 RxR3 15 RxRing
3
9 TxR2 2 TxRing
22 RxSD2 7 RxShield
20 RxT2 8 RxTip
8 TxT2 9 TxTip
10 TxSD2 10 TxShield
21 RxR2 15 RxRing
2
12 TxR1 2 TxRing
25 RxSD1 7 RxShield
23 RxT1 8 RxTip
11 TxT1 9 TxTip
13 TxSD1 10 TxShield
24 RxR1 15 RxRing
1
 Note:
 Tx = transmit; Rx = receive
 “Rx” and “Tx” marked on 75-ohm coaxial cable are in relation to the Routers, and they should be
respectively connected to the peer's “Tx” and “Rx”.