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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