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Connector Pin Assignments
Serial Interface Pin Assignments, DTE Mode (Packet Use Only)
The Serial interface on the 8300 Endpoint is a standard DB25 jack.
Function
Frame Ground
Transmit Data
Receive Data
Request to Send
Clear to Send
Data Set Ready
Signal Ground
Data Carrier Detect
Balanced Receiver Clock
Balanced Data Carrier Detect
Balanced External Transmitter Clock
Balanced Transmitter Clock
Balanced Clear to Send
Balanced Transmit Data
Transmitter Clock
Balanced Receive Data
Receiver Clock
Local Loopback
Balanced Request to Send
Data Terminal Ready
(not used)
Balanced Data Set Ready
Balanced Data Terminal Ready
External Transmitter Clock
(not used)
*
This refers to the DB25 Serial interface connector on the back of the unit.
8300-A2-GB20-00
Pin #
Abbrev.
Direction
DB25*
FG
n/a
1
TD
Output
3
RD
Input
2
RTS
Output
5
CTS
Input
4
DSR
Input
20
SG
n/a
7
DCD
Input
8
(B)RC
Input
12
(B)DCD
Input
10
(B)ETC
(B)TC
Input
11
(B)CTS
Input
19
(B)TD
Output
16
TC
Input
24
(B)RD
Input
14
RC
Input
15
Loop 3
Output
18
(B)RTS
Output
13
DTR
Output
6
n/a
21
(B)DSR
Input
23
(B)DTR
Output
22
ETC
n/a
25
April 2003
A. Specifications
RS-232 V.35
X.21
1
A
1
2
P
2
3
R
3
4
C
4
5
D
5
6
E
6
7
B
7
8
F
8
X
9
10
AA
12
13
S
14
15
Y
15
T
16
17
V
17
18
J
18
19
20
H
20
21
21
22
23
25
25
A-7
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