Connecting Modems - HP StorageWorks 2/64 - Core Switch Installation Manual

Connecting modems

The following items are required to set up two modems to work with the Core Switch 2/64 or
the SAN Director 2/128:
• 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
NOTE: HP recommends setting up the modems before powering on the Core Switch 2/64 or
SAN Director 2/128 and connecting it to the fabric.
To connect modems to the Core Switch 2/64 or SAN Director 2/128:
CAUTION:
before connecting cables to the modem ports.
1. Power off the Core Switch 2/64 or SAN Director 2/128.
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 Core Switch 2/64 or SAN Director
2/128 RS-232 modem ports.
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.
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 Core Switch 2/64 or SAN Director 2/128, or reboot if the switch was not
powered off during the previous steps.
This allows the Core Switch 2/64 or SAN Director 2/128 to recognize the modems.
HP recommends powering off the Core Switch 2/64 or SAN Director 2/128
Core Switch 2/64 and SAN Director 2/128 installation guide 125