Motorola SM56 Manual de inicio rápido - Página 6
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Using the on-board TAPI connector requires a sound card that also has a TAPI-style connector,
which has pins that provide analog microphone output and speaker input connections. Many
sound cards have one or more CD or auxiliary connectors, but these do not provide the required
microphone output for the SM56. To ensure compatibility, check the sound card specifications;
one connector must provide a microphone output as well as a speaker input.
You can make up or purchase a cable that routes SM56 microphone and speaker signals to the
sound card. Locate the 4-pin header connector on the SM56 card. The SM56 reference design
connector pin-out is as follows.
SM56 Pin
1
2
3
4
Important: Different modem manufacturers may vary this pinout. Consult their modem
documentation to verify. Also, different sound card connector pinouts may be different, in which
case the audio cable will need to have cross-over wires to match the pin signals. Make sure to
consult your sound card documentation for pin-signal details.
On-Board Microphone and Speaker Jacks
If the sound card does not provide a TAPI-style connector, you can connect the SM56 modem to
the sound card through optional on-board microphone and speaker jacks. Ask your modem
supplier for a board with this option. The microphone jack allows for the direct connection of a
microphone to the SM56 modem card. The sound card also has a microphone input.
•
To use speakerphone applications with the modem, connect your microphone to the
microphone input jack on the SM56 modem card. You can then talk into your
microphone and hold a conversation with the remote party.
•
To record audio (such as a voice mail greeting) on the personal computer, attach the
microphone to the microphone input jack on the sound card. Note that some
telephony applications may support audio recording through the modem jacks, e.g.
Bitware, in which case you do not need to switch the microphone to the sound card input
jack.
You may be able to create a special cable or use a T-splitter to connect one microphone to the
input on the modem and the sound board simultaneously.
The speaker out jack on the modem board can be used in one of two ways:
•
To directly connect powered speakers to it.
•
To connect it to the sound card line-in jack (this allows the speakers to remain plugged
into the sound card at all times).
SM56 Hardware Installation Procedure:
1. Power down the personal computer.
Signal
Ground
Microphone In
Ground
Speaker Out