AT | Function | Result | |
Command | Code | ||
| |||
|
|
| |
AT&Mn | Accepted but ignored. | OK n=0, 1, 2 | |
ERROR | |||
|
| Otherwise | |
AT&Pn | Accepted but ignored. | OK n=0, 1, 2 | |
ERROR | |||
|
| Otherwise | |
AT&Qn | Accepted but ignored. | OK n=0 to 8 | |
ERROR | |||
|
| Otherwise | |
| RTS/CTS Option |
| |
| This selects how the Digi Device Server controls CTS. CTS is modified if |
| |
| hardware flow control is selected (see &K command). The parameter value, |
| |
| if valid, is written to S21 bit2. |
| |
| &R0CTS reflects the ability of the modem to transmit data. For example, | OK n=0 or 1 | |
AT&Rn | CTS will drop during retrains. In sync mode, CTS tracks the state of RTS; | ||
ERROR | |||
the | |||
| Otherwise | ||
| ON and will turn OFF only if required by flow control. | ||
|
| ||
| &R1CTS forced on (default). In sync mode, CTS is always ON (RTS transi- |
| |
| tions are ignored). tracks the state of RTS. In async mode, CTS is normally |
| |
| ON and will turn OFF only if required by flow control. |
| |
| &R2CTS follows RTS. |
| |
| DSR Override |
| |
| This command selects how the modem will control DSR. The parameter | OK n=0 or 1 | |
AT&Sn | value, if valid, is written to S21 bit 6. | ||
ERROR | |||
&S0DSR will remain ON at all times. (Default.) | |||
| Otherwise | ||
| &S1DSR will become active after answer tone has been detected and inac- | ||
|
| ||
| tive after the carrier has been lost. |
| |
AT&Tn | Accepted but ignored. | OK n= 0 | |
ERROR | |||
|
| Otherwise | |
AT&V | Display Current Configuration and Stored Profiles | OK | |
There is no NVRAM support currently. | |||
|
| ||
AT&Vn | Accepted but ignored. | OK n=0 to 5 | |
ERROR | |||
|
| Otherwise | |
AT&V6 | Display current IP settings of the Device Server | OK | |
AT&Wn | Accepted but ignored. | OK n=0 or 1 | |
ERROR | |||
|
| Otherwise | |
AT&Xn | Accepted but ignored. | OK n=0 or 1 | |
ERROR | |||
|
| Otherwise | |
AT&Yn | Accepted but ignored. | OK n=0 or 1 | |
ERROR Other- | |||
|
| wise | |
AT&Zn | &Zn=x - Store Telephone Number. | OK n=0 or 3 | |
ERROR | |||
Currently not supported | |||
| Otherwise | ||
|
| ||
AT\An | Accepted but ignored. | OK n=0 to 3 | |
ERROR | |||
|
| Otherwise |
40 | Chapter 9 Modem Emulation |