Hardware Specifications
70
PR2000 Installation Guide
A.2.3. Serial WAN Interfaces (WAN1 and WAN2 ports)
The PR2000 is available in two models: RS-232/V.35 WAN ports (used in the
US and several other countries) or X.21 WAN ports (used mostly in Europe).
WAN (DB-25 connector) with RS-232 Interface:
WAN – RS-232
Pin
Signal
1
Cable Shield
2
TxD
3
RxD
4
RTS
5
CTS
6
DSR
7
GND
8
DCD
15
TxCLK DTE
17
RxCLK
20
DTR
22
RI
24
TxCLK DCE
WAN (DB-25 connector) with V.35 Interface:
WAN – V.35
Pin
Signal
1
PGnd
4
RTS
5
CTS
6
DSR
7
Gnd
8
DCD
11
TxD/V.35 (B)
12
TxD/V.35 (A)
13
RxD/V.35 (B)
14
RxD/V.35 (A)
16
TxClk_DTE V.35 (B)
18
TxClk_DTE V.35 (A)
19
TxClk_DCE V.35 (B)
20
DTR
21
TxClk_DCE V.35 (A)
23
RxClk V.35 (A)
25
RxClk V.35 (B)