Northern UTA220/UTA220k - Manual (Page 151)

UTA220/UTA220k
D-3
Interfaces
Table D-4 describes the pin functions of the DTE interfaces
available on ports three and four of the UTA220. Use the table
corresponding to the DTE interface on ports three and four of
your UTA220.
Caution: Connection to pins designated “Not Used”
may cause unforeseen problems. Pins designated
“Not Connected” have no electrical connection to
the UTA220.
Table D-3: V.35 Pin Functions
DB-25
Pin
M-34 Pin V.35 Function
1 A Protective Ground
2 P Transmitted Data A
3 R Received Data A
4 C Request to Send (RTS)
5 D Clear to Send (CTS)
6 E Data Set Ready (DSR)
7 B Signal Ground (SG)
8 F Received line signal detect
13 AA/a Transmit clock B
14 S Transmitted data B
15 Y Transmit clock A
16 T Received data B
17 V Receive clock A
18 J Ring Indicator (RI)
19 X Receive clock B
20 H Data Terminal Ready (DTR)
21 BB/b Remote loopback
22 L LL Loopback
25 K Test Mode