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User Guide
38
Connections
To use your modem, you must connect it to your computer (“RS232”), to a
telephone line (“LINE”), and to a power source (“PWR”). The North Ameri-
can model can also be connected directly to a telephone set (“PHONE”).
PWR RS232 PHONE LINE
Figure 3-1. Power and communications connectors.
For voice mail or speakerphone use, the MT5634ZBAV model can op-
tionally be connected to a microphone and an external speaker.
SPKR MIC
OFF ON
Figure 3-2. MT5634ZBAV speaker and microphone connectors.
Connecting to the Computer (“RS232”)
Using a matching serial cable, connect the RS232 connector on the
modem to one of the serial port connectors on the back of your comput-
er. On a PC, there are usually two serial ports named “COM1” and
“COM2.” COM1 typically uses a DB-9 connector, whereas COM2 may
use a DB-25 connector. Most Apple Macintosh computers use round
mini-DIN-8 connectors for the serial ports. Choose the one marked with
the icon of a telephone; the Macintosh gives priority to that port and will
not interrupt your communications link. Be sure to tighten the mounting
screws on the DB connectors.