Support; Interface Cable Characteristics - 3Com OfficeConnect Remote 510 User Manual

Interface Cable Characteristics

WAN Port Connecting Cable – V.11/X.21

Support

The WAN port terminates with a 25-way D-type
female connector. The port can be configured to
support V.11 signalling characteristics at data transfer
rates up to 2.048 Mbps. The WAN port connecting
cable is not supplied with the unit. The following
signalling characteristics should be observed when
purchasing or fabricating a suitable cable.
Interface Cable Characteristics
Pin Signal name
Links 3Com end
pin no.
(25-way male)
2 Transmit Data A (TXDA) 2
3 Receive Data (RXDA)
7 Signal Ground (Receive
Data)
12 Signal Ground
13 Indicate B (INDB)
14 Transmit Data B (TXDB) 9
15 Indicate A (INDA)
16 Receive Data B (RXDB)
17 Clock A (CLKA)
19 Clock B (CLKB)
23 Control B (CTRLB)
24 Control A (CTRLA)
B-5
Client end pin
no.
(15-way male
D-type connector)
4
8
12
5
11
6
13
10
3