Boca FDSP34AI, Руководство по установке, Страница: 34 / 68

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On-Line EXPRESS
Appendix A: Optional Accessories
The V.34 On-Line Express (FDSP34AI) is equipped with
microphone and speaker jacks for use with headset, speakers
and microphone. The microphone can be used to record
outbound messages. These messages can also be recorded
with a telephone attached to the modem. However, a
microphone is recommended for better quality recordings.
You may use a combination headphone and microphone or a
separate microphone and speaker(s).
Microphone Requirements:
The microphone element must be of the electret type also
known (incorrectly) as a condenser type. The microphone in
most telephone handsets is of this type. The FDSP34AI was
designed for a microphone sensitivity of -64 dBspl. Other
microphone sensitivities work equally well, with only a
subjective difference in loudness. Carbon microphone
elements will also work, but don’t offer the quality of the
electret. Another common microphone element is the
dynamic type which will NOT work with the V.34 On-Line
Express.
Speaker Requirements:
You can attach the FDSP34AI to a high-quality external
speaker or the earpiece of a handset. The external speaker
must have an impedance rating of 8 ohms or more.