Hayes Microcomputer Products ASLH306 manual Gprs operation

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1

CONNECT

Connection.

2

RING

Ringing signal detected.

3

NO CARRIER

Carrier lost or never present.

4

ERROR

Invalid Command.

6

NO DIAL TONE

No dial tone detected.

7

BUSY

Busy signal detected.

8

NO ANSWER

No answer from remote modem.

GPRS operation

The three main commands used to set up a GPRS call with the Delta Plus MOBILE II GSM/GPRS modem in listening mode are as follows:

AT+Gn, where n = 0 to 9

AT+G0 - turns off GPRS mode

AT+G1-9 turns on GPRS mode and auto connects using context 1-9 then listens for a port 23 connection.

If AT+Gn is on ( ie n = 1-9 ) then it will restart if the connection fails, also at power up. To set contexts (n = 1-9) in the following two commands:

AT+CDGCONT = n,”IP”,"Enter access point name (APN) address here"

.

AT*ENAD = n,"GPRS","username","password",1,0

To escape from TCP/IP listening mode when a session is not connected issue a Ctrl C.

This can take several minutes to “detach” from the network and will set AT+G0 until +G is changed or a reset or a power cycle is invoked. This will set the modem back into auto mode.

Firmware version 2.10 and above:

Additional GPRS watchdogs have been added to the modem in order to negate network fail conditions, these ensure that the unit continually re-tries to connect in GPRS mode if a call failure is detected.

Timeouts:

Typically these are –

Online GPRS inactivity timeout of 4m 16s (256 seconds) - covers failure mid session

User exit from GPRS mode (Ctrl C) times out & GPRS restarts after 1m 42 secs unless the AT+G command is used.

Fail safe timeout restarts every 3h 37.6 minutes if unit is offline. Covers random GPRS network failures!

Lack of Signal/Signal Quality (SQ) timeout is 45 minutes.

ASL Holdings Limited

19/09/2005

16

Draft Copy Version 2c

 

 

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Contents Draft Copy ASL Holdings Limited 19/09/2005 Draft Copy Version 2c Contents Disclaimer Copyright Notice Trademarks Hardware User Guide Guide to the manualIntroduction Features Connecting to your Terminal or ComputerSupplying power to the modem Battery powered versionConfiguring the modem AT Command setAntennae Subscriber Identity Module card AT aAT D AT EAT H Eenmea +CGATTAT O AT QAT Z AT &C AT &DAT &F AT&VAT &W ASL Holdings Limited 19/09/2005 Draft Copy Version 2c Sony Ericsson commands AT&WAT+CGMR AT+CBST?Registers Modem result codesGprs operation RC OK Remote AccessPay As You Go Payg SIM Support Quick brown fox jumps over the lazy dog. Data LED Status Gprs Mode Version 2.08 and above LED Status GSM Mode Version 2.02Technical Specifications ASL Holdings Limited 19/09/2005 Draft Copy Version 2c Appendices ASLH306 Firmware revision chart V4.0b AppendixAppendix Appendix Glossary of terms and abbreviations Converting Hex to Decimal Converting Hex to Octal Index ASL Holdings Limited 19/09/2005 Draft Copy Version 2c

ASLH306 specifications

Hayes Microcomputer Products, a pioneer in the modem industry, introduced the ASLH306, a significant advancement in telecommunications technology. This device was designed to improve communication efficiency and data transmission rates for personal computer users and businesses alike.

The ASLH306 is notable for its robust architecture, which allows it to support various communication standards. This versatility makes it compatible with a range of systems, from early personal computers to more advanced setups. One of the key features of the ASLH306 is its ability to operate at high baud rates, enabling faster data exchange compared to its predecessors.

In terms of connectivity, the ASLH306 utilizes an RS-232 interface, which has become a standard for serial communication. This interface not only supports reliable data transfers but also ensures compatibility with a wide array of devices, including printers and various peripherals. The ASLH306 is equipped with built-in error correction protocols, which enhance the reliability of data transmission by minimizing the chances of data loss during transfer.

The device also includes advanced features such as automatic dialing and answering capabilities, which streamline the process of connecting to remote systems. Users can easily configure these settings, making it more user-friendly for individuals and organizations that rely heavily on modem technology for their daily operations.

Another characteristic of the ASLH306 is its compact design, reflecting the trend towards smaller, more efficient hardware solutions in the tech industry. This portability is particularly advantageous for mobile professionals and field workers who require reliable communication solutions without the bulk of larger devices.

Hayes Microcomputer Products also placed emphasis on the user's experience with the ASLH306 through a well-designed user interface. The intuitive controls and clear indicators make it simple to monitor connections and troubleshoot issues as they arise. Overall, the ASLH306 stands out due to its combination of speed, reliability, and user-friendliness, marking it as a key player in the evolution of modem technology.

By delivering a blend of advanced features and efficient performance, Hayes Microcomputer Products has positioned the ASLH306 as an invaluable tool in the landscape of data communication, catering to the needs of both casual users and professionals seeking dependable connectivity solutions.
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