Communication Modes &Q


The following sections define the communication modes supported by Hayes modems. Refer to AT Commands and S - Registers for Specific Hayes Modem Products to determine which communication modes are supported in the Hayes product families.

Asynchronous Mode - &Q0

Synchronous Mode 1 Sync/Async - &Q1

Synchronous Mode 2 Stored Number Dial - &Q2

Synchronous Mode 3 Manual Dial with Data/Talk Switch - &Q3

Synchronous Mode 4 Hayes AutoSync - &Q4

Error-control Mode - &Q5

Asynchronous Mode with Automatic Speed Buffering - &Q6

MNP Error control - &Q8

V.42bis/MNP2-4 Error control - &Q9

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