4. AT Command Set and S-Registers

Table 4-2

(9 of 23)

Model 3830 AT Commands

&Dn DTR Action

Data Terminal Ready (DTR) is a signal from the DTE to the modem indicating that the DTE is connected and ready for operation.

&D0 Ignore. Modem ignores the true status of DTR and treats it as always ON.

&D1 Off=Command Mode. Modem enters online Command Mode if connected when DTR switches off.

&D2 Standard EIA-232. DTR Signal is controlled by the DTE.

&D3 Off=Reload Strap. Follows Standard EIA-232 operation, except that when DTR switches Off, the modem loads the Active (Saved) area into the Active (Operating) area.

&D4 Controls On-Hook. Follows Standard EIA-232 operation, except that modem does not disconnect until DTR is lowered by the DTE.

&Fn Select Factory Default Configuration Options

Loads factory configuration options into the Active (Operating) area. &F5 and &F6 are valid only if Enhanced Throughput Cellular (ETC) is installed.

&F0

Async Dial

&F3

UNIX Dial

&F5

Cellular (Mobile)

&F6

Cellular (PSTN)

 

 

3830-A2-GB91-30

August 1998

4-15

Page 51
Image 51
Paradyne manual Model 3830 AT Commands Dn  DTR Action, Fn  Select Factory Default Configuration Options