Article: Modem-access adapter reduces interference.

THE MODEM-ACCESS ADAPTER (MAA) in Figure 1 has features that reduce problems when modems and phones share the same line. The design also overcomes the shortcomings of modem interference protectors. The design eliminates mutual interference between phones and modems, is compatible with the line-usage indicators on multiline phones, can search for an idle phone line in multiline installations, draws minimum power, and requires no changes to a PC modem's hardware or software.

[Figure 1 ILLUSTRATION OMITTED]

Most residential PC users connect to the Internet using a dial-up modem. In most cases, the modem and voice calls must share one phone line. This ...

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