Configuration File Selection - IBM TotalStorage NAS Gateway 500 Service Manual

Configuration file selection

Use the following steps to select a configuration file:
1. Is your modem an IBM 7852-400?
If Yes, use "Configuring the 7852-400 Modem" to set DIP switches on the modem and use modem
configuration file modem_m0.cfg and then go to step 3.
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 396 for the correct switch settings.
If No, go to "Generic configuration file selection" on page 396.
2. Is your modem an IBM 7857-017? If Yes, use "Configuring the 7857-017 or 7858-336 Modem", use
modem configuration file modem_m1.cfg, and go to step 3.
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 and the service processor expect to use the modem on
the public network, so the telephone line should attach to the PTSN connector.
If No, go to "Generic configuration file selection" on page 396.
3. You have completed the modem configuration.
Configuring the 7852-400 Modem
The 7852 Model 400 is one of the recommended modem choices for the Electronic Service Agent and
service processor. From the factory, there are DIP switches on the side of the modem that need to be set
to make the asynchronous mode the default mode. Switch 12 needs to be set to the off (down) position for
asynchronous mode. Switch 11 needs to be set to the on (up) position to enable AT Responses. If you
wish to enable the auto-answer capability of the 7852-400 modem to perform remote dial-in to the NAS
Gateway 500, Switch 5 needs to be set to the on (up) position to disable enable auto-answer. If your
security requirements do not allow remote dial-in, switch 5 needs to be set to the on (up) position to
enable auto-answer. If your security requirements do not allow remote dial-in, switch 5 needs to be set to
the off (down) position to disable auto-answer. See "IBM 7852-400 DIP switch settings" on page 396 for
proper setting of switches.
To set up and initialize the 7852-400 for operation:
1. Set switches 5, 11 and 12 to their appropriate position.
2. Connect the RS232 cable to the modem and to a serial port.
3. Connect the telephone cable (sent with the modem) to the modem connector labeled LINE (middle
connector), and to the telephone wall jack.
4. Connect the modem power cable to the modem and the transformer to the building power.
5. Power-on the modem (switch in rear).
Configuring the 7857-017 or 7858-336 Modem
The 7857 is also a recommended modem for the Electronic Service Agent. The 7858-336 is the
replacement modem for the 7857. These procedures aid in the proper configuration of the 7857-017 or
7858-336, or set a known configuration state.
To set up and initialize the 7857-017 or 7858-336 for operation:
1. Connect the RS232 cable to the modem and to a serial port.
2. Connect the telephone cable (sent with the modem) to the modem connector labeled PSTN, and to the
telephone wall jack.
3. Connect the modem power cable to building power.
4. Power-on the modem.
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NAS Gateway 500 Service Guide