Requirements for pc communication – Nortel Networks FastRad User Manual
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5
FastRAD Installation Guide
Requirements
for PC
communication
A PC communicates with a FastRAD either through a modem or
through an RS-232 cable. A modem is used when the PC is
situated at a remote location. An RS-232 cable is used when the
PC is situated near the FastRAD at the customer site.
When you use a PC at the customer site, you must use a 9-pin
cable to connect the PC to the RS-232 port on the FastRAD.
This connector is not supplied with the FastRAD. Table 1 shows
which pins are used to make a connection with the FastRAD.
Note
: The FastRAD modem supports V.32/V.32bis protocols
only. We recommend a baud rate* of 9600 or greater be
selected when connecting Norstar PC applications to the
FastRAD remotely using a modem.
*Refers to the PC-Modem DTE speed.
Table 1 – RS-232 Pin configuration
Pin
Name
Function
Direction
1
DCD
Data Carrier Detect
from FastRAD
2
RXD
Received Data
from
FastRAD
3
TXD
Transmitted Data
to
FastRAD
4
DTR
Data Terminal Ready
to
FastRAD
5
GND
Ground
-
6
DSR
Data Set Ready
from
FastRAD
7
RTS
Request to Send
to
FastRAD
8
CTS
Clear to Send
from
FastRAD
9
RI
Ring Indicator
from
FastRAD
855601 Book : 855601 Guide Page 5 Wednesday, October 29, 1997 4:06 PM