Connector pin assignments – Verilink WANsuite 5230 (34-00304.F) Product Manual User Manual
Page 225
S p e c i f i c a t i o n s
A-7
Connector Pin Assignments
The Serial Interface is a standard DB-25 jack.
Serial Interface Pin Assignments for DTE Mode (Packet Use Only)
*This refers to the DB-25 Serial interface connector on the back of the unit.
Function
Abbrev.
Direction
Pin #
DB-25*
RS-232
V.35
EIA-530
X.21
Frame Ground
FG
n/a
1
1
A
1
1
Transmit Data
TD
Output
3
2
P
2
4
Receive Data
RD
Input
2
3
R
3
2
Request to Send
RTS
Output
5
4
C
4
--
Clear to Send
CTS
Input
4
5
D
5
3
Data Set Ready
DSR
Input
20
6
E
6
--
Signal Ground
SG
n/a
7
7
B
7
8
Data Carrier Detect
DCD
Input
8
8
F
8
5
Balanced Receiver Clock
(B)RC
Input
12
X
9
--
Balanced Data Carrier Detect
(B)DCD
Input
10
10
12
Balanced External Transmitter
Clock
(B)ETC
13
Balanced Transmitter Clock
(B)TC
Input
11
AA
12
--
Balanced Clear to Send
(B)CTS
Input
19
13
10
Balanced Transmit Data
(B)TD
Output
16
S
14
11
Transmitter Clock
TC
Input
24
15
Y
15
--
Balanced Receive Data
(B)RD
Input
14
T
16
9
Receiver Clock
RC
Input
15
17
V
17
--
Local Loopback
Loop 3
Output
18
18
J
18
--
Balanced Request to Send
(B)RTS
Output
13
19
--
Data Terminal Ready
DTR
Output
6
20
H
20
--
(not used)
n/a
21
21
21
--
Balanced Data Set Ready
(B)DSR
Input
23
22
--
Balanced Data Terminal Ready
(B)DTR
Output
22
23
--
External Transmitter Clock
ETC
6
(Not Used)
n/a
25
25
25