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AT Commands

AT command formats

 

&Pn Select Pulse Dial Make/Break Ratio

 

&P0

Selects 39% - 61% make/break ratio at 10

 

 

pulses per second.

 

&P1

Selects 33% - 67% make/break ratio at 10

 

 

pulses per second.

 

&P2

Selects 33% - 67% make/break ratio at 20

 

 

pulses per second.

 

Result Codes:

 

OK

n=0 to 2

 

ERROR Otherwise

&Tn Self-test commands

These tests can help to isolate problems if you experience periodic data loss or random errors.

&T0

Abort. Stops any test in progress.

&T1

Local analog loopback test, V.56 Loop 3. This

 

test verifies modem operation, as well as the

 

connection between the modem and computer.

 

If the modem is online when this command is

 

issued, the modem hangs up.

Result Codes:

OK n=0

CONNECT n=1

ERROR Otherwise