Sangoma S503, Hardware Interface Manual

Page: 9 / 78

9
Frame Relay for Sangoma Cards (C) Sangoma Technologies Inc. 1999,2000,2001 Page 9 of 78
S503/S508 Port Pinouts
RS232
Pin # Function
2 TxD
3 RxD
7 GND
4 RTS
5 CTS
20 DTR
6 DSR
8 DCD
15 TxC
17 RxC
24 BxC
V.35/X.21
Pin # Function
4 RTS
5 CTS
6 DSR
7 GND
8 DCD
10 TxA
9 TxB
12 RxA
11 RxB
19 Tx Clock A
20 DTR (V10 signal)
13 DTRA (V11 signal)
14 DTRB (V11 signal)
21 Tx Clock B
22 RI
23 Rx Clock A
25 Rx Clock B
18 Aux. Clock A (On board clock
source)
16 Aux. Clock B (On board clock
source)