Modem interfaces – Jaton Communicator V.90 User Manual
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HARDWARE JUMPER SETTING:
Your modem can be set to either Plug and Play or manual operation. It is
recommended to use PnP if you have Windows®9x Plug and Play
Operating System. Otherwise, use jumpers to manually setup the
Communication Port Address and Interrupt.
COM PORT JUMPER SELECT:
COM PORT
I/O Address
IRQ (Interrupt)
Jumpers
COM 1
03F8h
4
5, 7, 11
COM 2
02F8h
3
1, 7, 9
COM 3
03E8h
4
3, 5, 11
COM 4
02E8h
3
1, 3, 9
PnP
PnP
PnP
9 through 27
Modem Interfaces
SPEAKER INTERFACE
The modem chipset internally implements both the volume control and
amplifier necessary to drive an external speaker. The internal amplifier is
capable of driving a minimum load of 8 ohm up to a maximum load of 100
ohm. The speaker volume is controlled by the ATLn command.
EARPHONE INTERFACE
The modem chipset implements the volume control to an external earphone.
Before you wear the ear piece, make sure it is connected to the earphone
jack.
MICROPHONE INTERFACE
The modem provides a microphone interface that connects a microphone to
the modem. This microphone input can be used for local voice record mode
or for Telephone-Emulation mode.