HP StorageWorks SAN Director Installation Guide (A7393-90009, May 2007)

SAN Director installation guide 179
Connecting modems
NOTE: Setting up the modems before powering on the 4/256 SAN Director and connecting it to
the fabric is recommended.
The following items are required to set up two modems to work with the 4/256 SAN Director:
• Two Hayes-compatible modems, such as the Zoom/Modem V.92 EXT Model 3049
• Two standard modem cables, DB25 (male) to DB9 (female)
• One RJ-11 “Y” adapter for standard telco wiring or equivalent circuitry (three total connections)
• One analog telephone line
CAUTION: Powering off the 4/256 SAN Director before connecting cables to the modem ports is
recommended.
To connect modems to the 4/256 SAN Director:
1. Optionally power off the 4/256 SAN Director.
2. Set up the two modem units and corresponding power connections, but do not power on the
modems until all cables are attached.
3. Connect the modem cables to the modems and to the 4/256 SAN Director RS-232 modem
ports, as shown in Figure 39 on page 178.
4. Connect the telephone “line” inputs on the modems to the RJ-11 “Y” connector.
This effectively places both modems on a single telephone line.
5. Optionally connect a telephone handset to one of the “phone” connections on the modems, as
shown in Figure 39 on page 178.
6. Connect the “Y” adapter to an appropriate analog telephone line and document the dial-in
number for later use.
7. Power on the modems and verify that the Modem Ready indicator illuminates on both units.
8. Power on the 4/256 SAN Director, or reboot if it was not powered off during the previous steps.
This allows the 4/256 SAN Director to recognize the modems.