ATS Maximus MCJ2000 Series, Справочное руководство

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MANU-MAXIMUS-02 Maximus Reference Manual D-7
Revision-02
Appendix D: GSM/GPRS Setup Manually Configuring a GSM Terminal
Editing a Chat File
The chat files are found here: /etc/ppp. Open and modify an existing chat file. You need to
provide the endpoint information, or access point name (APN), which is provided by your
service provider, as well as the frequency of the signal.
• The endpoint is placed in the second set of quotes in the AT+CGDCONT
command. In this case, the endpoint begins with
wap but does not have to.
• Frequency is set in the AT+WMBS command based on the provider frequency.
• A value of 850MHz or 1900MHz requires you enter 4,1
• 900MHz or 1800MHz requires you enter 5,1
/etc/ppp # cat connect-yourchatfilename
ABORT 'BUSY'
ABORT 'NO CARRIER'
ABORT 'ERROR'
"" ATV1
OK AT+WOPEN=0
OK AT+WMBS=5,1
OK AT+CGDCONT=1,"IP","wap.endpoint.somewhere"
OK ATD*99***1#
CONNECT ""
Communication Speed
It takes about one second to transmit one line of an ATS UCS download. You can speed up
your transmission of downloads by compacting the download. Compact downloads have
these features:
• Up to 1500 characters in one line
• Each command must begin with this string (where
➲
is a group separator)
• \A!
➲
• Each command must end with a record separator (where ^ is a record separator)
• \A!
➲
ON00A ^
• Each line up to 1500 characters must end with an end-of-transmission character
(where EOT represents that end-of-transmission character)
• Use of EOT must be enabled in the terminal’s Setup menu