GSM0128IG001
48
Revision Draft – 9/22/08
9.0 Software
Interface
9.1 Software Interface
The application sends commands to the Enfora Enabler IIG module via the 60-pin I/O signal connector.
These commands use the Enfora AT Command Set and/or Enfora’s Packet API.
The Enfora Enabler IIG module operates in one of the following modes:
Command mode: Used for configuring the Enfora Enabler IIG module, for interrogating the GSM
network, and for placing and receiving calls. It uses the AT command set via the serial port for
communication.
IP Packet /API Mode: Used to read/write modem parameters, interrogate network information, and
place and receive calls in real-time, multi-tasking mode. The Packet API mode is facilitated over a PPP
connection and the packets can be constructed according to the information provided in the
GSM0308UG001 - Enfora GSM-GPRS Family API Reference
.
GSM0308UG001 - Enfora GSM-GPRS
Family API Reference
provides detail of the UDP Modem Control Library that has three levels: port,
messaging, and modem libraries. Each of the three levels contains one or more libraries. For example,
the port libraries layer has UDP PPP Port, UDP Socket Port, and COM Port libraries. All libraries are
provided as a part of the Enfora Enabler IIG Integration Toolkit.
The AT command driver of the Enfora Enabler IIG module never exits the Command state, that is, it never
enters the On-line mode. Although the host interface may not be able to access the AT command
interpreter, it is always running and is available via the API Mode over a PPP connection and/or via the RF
interface.
In the Command state, characters that are received from the Customer Premise Equipment (CPE) are
treated as AT commands by the Enfora Enabler IIG module.
In response to the commands received from the CPE, the Enfora Enabler IIG module sends characters
(AT commands) to the CPE.
Various events can also trigger the Enfora Enabler IIG module to send characters (AT commands) to
the CPE.
9.2 Format for the AT Commands
The general format of the command line is:
<prefix> <command> <CR>
<prefix>
AT
<command>
See AT Command Manual
<CR>
0X0D
The prefix AT obtains synchronization, identifies the character parameters, and indicates that a command
may be in the following characters.
AT commands are not case sensitive: use either capital letters or lower-case letters for the AT command.
Note:
Some AT Command parameter values
ARE
case sensitive and are documented in
GSM0128AT001
– Enfora Enabler IIG AT Command Set.
