GPRS
Principle of GPRS
GPRS is an evolution of GSM to improve the data traffic.
Data exchange can be done at higher speeds (up to 115 kb / s instead of 9.6 kb / s) and packet (instead of circuit mode), allowing peak traffic (bursts) and share the bandwidth, instead of a circuit monopolier fixed rate.
Although the PGRS requires no equipment to replace GSM radio (a software update is still needed), the mobile terminal must of course be compatible, and new elements dedicated to data traffic must be installed in the network of operator (such as APN, the SGSN, the GGSN, the WAP proxy / Web).
GPRS supports X.25 and IP network protocols, so it can ship any connection application "network", so all Internet services (not just WAP), each mobile operator allowing only certain internet services and applications, according to his abilities, his technical and economic choices, and the option paid by the subscriber.
Parameters operators (FR)
SFR:
Login Name: SFR GPRS (or SFR WAP GPRS or WAP ...)
Access point name APN: wapsfr (with an option websfr or Web access)
Authentication: none
Username: no
Password: no
ORANGE:
Login Name: Orange GPRS (WAP or ORANGE or ....)
Access point name APN: orange.fr
Authentication: PAP or normal
Username: orange
Password: orange
BOUYGUES TEL:
Login Name: Bouygues GPRS (or other ...)
Access point name APN: mmsbouygtel.com (multimedia package) or ebouygtel.com (20MB package)
Authentication: none
Username: no
Password: no
GPRS AT commands modems
PDP context definition
AT + CGDCONT = 1, "IP", "APN" where 1 is the CID, the IP protocol to use the camera and GPRS access point.
This command can be used as an initialization string with a GPRS modem in the event that the mobile does not have GPRS data préparamétré profiles.
Connection start
ATDT * 99 *** <CID>
Where CID is the ID context, ie the identifier of the profile data stored in your mobile GPRS.
One Ping to "GPRS"
13 Responses to "GPRS"
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