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The Info List - PhoneNet



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(i)

PHONENET was an implementation of the AppleTalk
AppleTalk
networking physical layer created by FARALLON COMPUTING (now Netopia ).

Instead of using expensive shielded twisted pair wiring as in Apple's LocalTalk
LocalTalk
implementation, PhoneNet
PhoneNet
uses standard four-conductor telephone ( Category
Category
1 ) patch cords and modular connectors .

Like LocalTalk, the theoretical maximum speed for data transfer was 230 kbit/s, and it is generally used in a daisy chain topology.

FUNCTIONALITY

Unlike LocalTalk's balanced and grounded implementation, PhoneNet used only two lines of the four in a typical cable.

As normal telephone equipment also normally used only two lines, PhoneNet
PhoneNet
could be plugged into existing phone lines in some instances, allowing both phone calls and networking over a single cable.

Generally this requires some hand-crimping of a cable using three RJ11 jacks, connecting a single jack to two, one with two wires for the phone and the other with the other two for networking.

SUPERSEDED BY

Though PhoneNet
PhoneNet
transceivers are still available from third parties for use on legacy Macintosh networks, no current Apple computer or device model comes with the RS-422
RS-422
serial ports that are required for PhoneNet
PhoneNet
transceivers.

Virtually all modern Apple devices network use Ethernet
Ethernet
or Wi-Fi
Wi-Fi
or Bluetooth.

.