Telit Wireless Solutions Easy GPRS 1.2.3 Requested Quality of the Service

Easy GPRS User Guide

80000ST10028 Rev. 0 - 02/01/07

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31 - Best Effort

• wait for response:

Response Reason Action

OK context parameters have been

successfully stored proceed ahead

ERROR some error occurred check parameters and retry.

NOTE: If your minimum requirements are too high, then it can happen that it is impossible to

establish a GPRS connection, because the network has not enough resources to guarantee

that quality of service. If does this happen, then you shall try reducing your minimum quality

requirements.

For example:

1- Let's assume you want to set-up the GPRS context number 1(cid) written before with your GPRS

min QoS parameters:

Precedence class: Normal priority

Delay class: subscribed

Reliability class: subscribed

Peak throughput: not less than 15,6 kbps

Mean throughput: not less than 7,8 kbps

command:

AT+CGQMIN= 1,2,0,0,5,4 <cr>

response

OK

NOTE: Telit suggests to setup AT+CGQMIN=1,0,0,0,0,0

1.2.3 Requested Quality of the Service

The requested quality of service parameters represents the connection quality that is requested to the

network on GPRS context activation.

• send command

AT+CGQREQ=<cid>,<precedence>,<delay>,<reliability>,<peak>,<mean><cr>

where:

<cid> - is the index number of the desired context to be written (up to 5 different context).

Contents

Main Easy GPRS User Guide Page Contents Page Page 1.1.1 CSD application example 1.1.2 GPRS application example 1.2 Preliminary GPRS context parameters setting 1.2.1 Context parameter setting AT+CGDCONT[=[<cid>[,<PDP_type>[,<APN>[,<PDP_addr>[,<d_comp>[,<h_comp>[,<pd 1>[,[,pdN]]]]]]]]]]<cr> 1.2.2 Minimum Quality of the Service Requested AT+CGQMIN=<cid>,<precedence>,<delay>,<reliability>,<peak>,<mean><cr> Page 1.2.3 Requested Quality of the Service AT+CGQREQ=<cid>,<precedence>,<delay>,<reliability>,<peak>,<mean><cr> Page 1.3 GPRS context activation and data state entering ATD*99***<cid>#<cr> Page 1.4 GPRS data state exit send escape sequence: +++ send command ATH<cr> Page 2.1.1 Easy GPRS Outgoing connection 2.1.1.1 Configuring the GPRS access 2.1.1.2 Configuring the embedded TCP/IP stack 2.1.1.3 Saving settings for the Internet peer to be contacted 2.1.1.4 Request the GPRS context to be activated 2.1.1.5 Open the connection with the internet host 2.1.1.6 Close the Socket without deactivating the context 2.1.2 Easy GPRS Incoming Connection 2.1.2.1 Defining the Internet Peer that can contact this device (firewall settings) 2.1.2.2 Request the socket connection to be opened in listen 2.1.2.3 Receiving connection requests 2.1.3 FTP Client 2.1.4 Email Client 2.1.5 Known limitations 2.2 FTP OPERATIONS 2.2.1 Opening and Closing an FTP Connection 2.2.2 Setting the FTP Transfer Type 2.2.3 FTP File transfer to the server 2.2.4 FTP File download from the server Page 2.3 Examples1 2.3.1 Easy GPRS - HTTP client application Page 2.3.2 Easy GPRS - EMAIL sending application Page 2.3.3 Easy GPRS -EMAIL receiving application Page 2.3.4 Remote connection between two modules Page 3 List of acronyms 4 Document Change Log