IBM TotalStorage 2109 M12, Installation And Service Manual

Page: 65 / 159

Table 7. Modem parameters for Windows 95, 98, 2000, ME, or NT, or TERM in a UNIX
environment
Parameter Value
Port speed (bits per second) 115200. This value usually defaults to the
highest speed that the modem supports and
then possibly negotiates for a slower speed.
Data protocol Standard EC
Compression Enabled
Flow control Hardware
Databits 8
Parity None
Stop bits 1
Modulation Standard
v
For most UNIX systems, at the prompt, type:
tip /dev/ttyb -9600
4. Follow the instructions from the modem manufacturer for setting up and
verifying the modem operation.
Installing the modems on the switch
Note: You should set up the modems before you power on the switch and connect
it to the fabric.
The switch detects modems only during power on, restart, or CP card failover. Set
up the modems before you connect the switch to the fabric.
You need the following items to set up two modems to work with the switch:
v
Two Hayes-compatible modems, such as the Zoom/Modem V.92 EXT Model
3049
v
Two standard modem cables, DB25 (male) to DB9 (female)
v
One RJ–11 Y adapter for standard Telco wiring or equivalent circuitry (a total of
three connections)
v
One analog telephone line
CAUTION:
For normal installation, the switch and attached modems are powered off
before cabling them. The modems are automatically detected during a
power-on sequence.
Perform the following steps to install the modems:
1. Verify that the power to the switch is off.
2. Set up the two modem units and the required power connections. Do not turn
on the power to the modems until all cables are attached.
3. Connect the modem cables to the modems and to the switch modem ports. See
Figure 19 on page 34.
4. Connect the telephone line inputs on the modems to the RJ–11 Y adapter. This
effectively places both modems on a single telephone line.
Chapter 4. Installing modems
35