Serial Interface Pin Definitions - US Robotics Sportster Operating Instructions Manual

Serial Interface Pin Definitions

DB-25 DB-9 Circuit
1 — AA
2 3 BA
3 2 BB
4 7 CA
5 8 CB
6 6 CC
7 5 AB
8 1 CF
12 — SCF
20 4 CD
22 9 CE
158
T Q
ECHNICAL UICK
Function
Chassis Ground
Transmitted Data
Received Data
Request to Send
Clear to Send
Data Set Ready
Signal Ground
Carrier Detect
Speed Indicate
Data Terminal Ready
Ring Indicate
R
EFERENCE
Signal Source
Computer/Modem
Both
Computer
Modem
Computer
Modem
Modem
Both
Modem
Modem
Computer
Modem