Basic Modem Operation
The initialization string sent to the Trumpcard for cellular connections may not result in the optimum connection when used for landline connections. If possible, set the communications software to send the desired initialization string based on the type of connection being used.
Refer to the section Receiving an Incoming Call for details on how to command the Modem to receive incoming calls.
Cellular Call Status
The Trumpcard provides a method of determining if the cable connection to the cellular phone is operational. The AT^T6 command is used for this purpose and returns a decimal number representing the current status.
The bit map for the status byte is:
Bit # | Description |
0Cellular phone is receiving an incoming call
1Cellular phone is in use
2Cellular phone is locked
3There is no service for cellular phone
4Cellular phone is powered on
5Cellular driver is initialized
6–
7Cellular cable detected
The bit map values have to be converted from binary to decimal. The most common values are:
160 Cellular cable is detected and driver is initialized.
176Cellular cable detected, driver is initialized and phone is powered on. (This state is required to place a call.)
178Cellular cable detected, driver is initialized, phone is powered on and cellular phone in use.
User’s Guide and Reference | 4 - 11 |
