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(E-mail and Handy FAX) |
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(E-mail and Handy FAX) |
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The PHS terminal includes an ADPCM codec which converts voice signals to digital signals of 32 kbit/s. In using this terminal for data communication (non-phone service), we need to convert the data signal to an analog signal that is the same as the voices signal. A modem can be used for this conversion. We used a 4.8kbit/s modem for this experiment. The speed of this modem sometimes falls to 2.4 kbit/s because of the air section.
It is possible to send and receive e-mail in a wireless environment by connection PDAs or notebook PCs to mail servers through PHS terminals. Similarly, it is easy to send and receive facsimile messages between handy facsimile equipment and facsimile equipment in conventional networks through the PHS terminals. The quality of facsimile is the same as that of a G3 facsimile. These services enable us to manage schedules and control sales stock while outside the office. Therefore, the services help to move-up delivery dates and improve customer service.
