Nortel Passport 15000, Установка и обслуживание оборудования, Страница: 294 / 874

294 Chapter 17 Hardware procedures
241-1501-240 5.2S2
Configuring modem software
Configure modem software after setting the modem dip switches to enable a
remote operator connection.
Prerequisites
• Ensure you have a computer or terminal with an RS-232 port that you can
temporarily connect to the modem while you adjust the modem settings.
The RS-232 port must be capable of running at 9600 BPS; otherwise, the
modem will not be able to communicate with the Passport switch local
operator port.
• Complete the procedure “Setting modem dip switches” (page 852).
Procedure steps
1 On the modem, set dip switch 8 for the smart mode to on (down).
2 Switch the modem power off, then on again.
3 Get a computer or terminal with an RS-232 port to temporarily connect
the modem to while settings are adjusted.
The RS-232 port must be capable of running at 9600 BPS. Otherwise the
modem will not be able to communicate with the Passport local operator
port.
4 Set the computer or terminal to use to use software flow control, also
referred to as the data leads only mode. Otherwise the modem may not
be able to communicate with the computer or terminal.
5 Connect the modem to the RS-232 port of a computer or terminal using a
standard straight-through serial cable. Typically the cable has a 9-pin
D-sub female connector at one end and a 25-pin D-sub male connector
at the other end.
Do not use the V.24 DCE cable (PEC NTBP25 or custom-length
equivalent) provided with the Passport. Use a custom-made cable that
complies with the specifications identified in the Procedure job aid of
“Connecting a CP modem cable” (page 300).
6 Enter the following one-word commands. Explanations are provided for
each one.
• ATQ0 (with a zero, displays result codes so that the modem responds
with OK after this command and whenever an attention command
(AT) is entered)