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Zhone Technologies / 3-3
Electrical Installation Data port connector pinouts
Note: For purposes of connection and function, the product should be considered a DCE.
3.2.1 FXO/FXS connectors
Table 3-3 lists the FXS/FXO connector pinouts.
13 Not Connected
14 Transmit Data B DTE S
15 Transmit Timing B DCE Y
16 Receive Data B DCE T
17 Receive Timing B DCE V
18 Not Connected
19 Not Connected
20 Data Terminal Ready DTE H
21 Remote Loopback DTE N
22 Local Loopback DTE J
23 Not Connected
24 Terminal Timing A Not Used U
25 Test Mode DCE NN
Table 3-3. 25-pair female amphenol connector
Port Designation Pin Port Designation Pin
1 T 26 13 T 38
1R 1 13R 13
2 T 27 14 T 39
2R 2 14R 14
3 T 28 15 T 40
3R 3 15R 15
4 T 29 16 T 41
4R 4 16R 16
5 T 30 17 T 42
5R 5 17R 17
6 T 31 18 T 43
6R 6 18R 18
7 T 32 19 T 44
7R 7 19R 19
8 T 33 20 T 45
8R 8 20R 20
Table 3-2. DCE DB25 data port female connector (Continued)
Pin Signal Source V.35