IBM TotalStorage NAS Gateway 500, Administrator'S Manual, Page: 277 / 358

Appendix A. Modem configurations
Attention: This appendix applies only to modems attached to serial port S2
located on the CEC backplane (location U0.1-P1).
Verify the TTY characteristics of serial port S2.
v tty interface is RS232
v
baud rate is 9600 or higher
v login enable is disabled
v
flow control is RTS
Use the smit tty command to verify or change these settings.
Note: Do not change serial port 1 to login disabled . The service console access
requires login enable be set to enabled.
The Electronic Service Agent is designed to place little demand on an attached
modem, thereby increasing the setup and connection success rates.
Note: This information replaces Appendix B, in the IBM TotalStorage NAS Gateway
500 Service Guide .
Modem setup
This section describes how to configure the IBM modems recommended for use
with the Electronic Service Agent.
The recommended modems are:
v
7852 Model 400
v 7857-017 or 7858-336
Note: You can use a non-recommended modem. The Electronic Service Agent
configuration has an extensive selection of modems from which you can
choose.
Use the following steps to select a configuration file:
1. Is your modem an IBM 7852-400? If so, see “Configuring the 7852-400 Modem”
on page 256 to set the dual in-line package (DIP) switches on the modem.
Note: The IBM 7852-400 modem has DIP switches on the right side of the unit.
See “IBM 7852-400 DIP switch settings” on page 257 for the correct
switch settings.
2. Is your modem an IBM 7857-017? If so, see “Configuring the 7857-017 or
7858-336 Modem” on page 256.
Note: The IBM 7857-017 modem has two telephone line connections on the
back of the unit. One is marked LL (for leased line), and the other is
marked PTSN (for Public Telephone Switched Network). The Electronic
Service Agent expects to use the modem on the public network, so the
telephone line should attach to the PTSN connector.
3. You have completed the modem configuration.
© Copyright IBM Corp. 2004
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