AT | Function | Result | |
Command | Code | ||
| |||
|
|
| |
| DTR Option. This command interprets the ON to OFF transition of the DTR |
| |
| signal from the DTE in accordance with the parameter supplied. The param- |
| |
| eter value, if valid, is written to S21 bits 3 and 4. Also see S25. |
| |
| &D0 |
| |
| do not provide DSR. | OK n=0 to 3 | |
AT&Dn | &D1DTR drop is interpreted by the modem as if the asynchronous escape | ||
ERROR | |||
sequence had been entered. The modem returns to asynchronous com- | |||
| Otherwise | ||
| mand state without disconnecting. | ||
|
| ||
| &D2DTR drop causes the modem to hang up. |
| |
| (Default.) |
| |
| &D3DTR drop causes the modem to perform a soft reset as if the Z com- |
| |
| mand were received. The &Y setting determines which profile is loaded. |
| |
| Restore Factory Configuration (Profile) |
| |
| The Device Server loads the factory default configuration (profile). The fac- | OK n=0 or 1 | |
AT&Fn | tory defaults are identified for each command and in the | ||
ERROR | |||
tions. A configuration (profile) consists of a subset of | |||
| &F0Restore factory configuration 0. | Otherwise | |
|
| ||
| &F1Restore factory configuration 1. |
| |
AT&Jn | Accepted but ignored. | OK n=0 or 1 | |
ERROR | |||
|
| Otherwise | |
AT&Gn | Accepted but ignored. | OK n=0 or 1 | |
ERROR | |||
|
| Otherwise | |
AT&Jn | Accepted but ignored. | OK n=0 or 1 | |
ERROR | |||
|
| Otherwise | |
| Flow control. This command defines the DTE/DCE flow control mechanism. |
| |
| The parameter value, if valid, is written to S39 bits 0, 1, and 2. |
| |
| &K0 Disables flow control | OK n=0,3,4,5,or 6 | |
AT&Kn | &K3 Enables RTS/CTS flow control (Default) | ||
ERROR | |||
| &K4 Enables XON/XOFF flow control | Otherwise | |
| &K5 Enables transparent XON/XOFF flow control |
| |
| &K6 Enables both RTS/CTS and XON/XOFF flow control. |
| |
AT&Ln | Accepted but ignored. | OK n=0, 1, 2 | |
ERROR | |||
|
| Otherwise | |
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 |
Chapter 7 Special Features: Modem Emulation | 49 |
