Setting Modem Dip Switches; Turning On Power - Nortel 7400 Hardware Installation

522 Chapter 39 Hardware procedures

Setting modem DIP switches

Prerequisites
Procedure steps

Turning on power

NN10600-175 6.1S2
Set modem DIP switches using the instructions provided by the manufacturer
of the modem before you configure the modem software.
• Ensure that the modem you want to use supports all of the required
settings. For more information, see "Modem selection" (page 175).
1 Set the modem DIP switches as specified in the table "Modem DIP switch
settings" (page 522). The table applies to a US Robotics 56K modem as
an example of the settings you must apply.
Table 15
Modem DIP switch settings
DIP Description of the setting
switch
number
1 modem ignores DTR (override)
2 verbal (word) results
3 disable word codes
4 suppresses echo
5 modem answers on first ring, or higher if
specified in non-volatile memory (NVRAM)
6 modem sends CD signal when it connects
with another modem, drops CD on
disconnect
7 loads Y or Y1 configuration from user-defined
NVRAM
8 disables command recognition (dumb mode) off (up)
Turn on the power source after you have completed all procedures involving
power supplies or cables.
Required setting
on (down)
off (up)
off (up)
on (down)
off (up)
off (up)
off (up)