Telit Wireless Solutions Easy GPRS Manuel D’Utilisation

 
 
 
 

 
 

80000ST10028 Rev. 0 - 02/01/07  

  

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved 

 

page 13 of 35 

 

1.3  GPRS context activation and data state entering 

 
This operation corresponds to the dial and connect of a CSD GSM data call issued to an internet 
service provider. 
 

• 

send command 

 

 

ATD*99***<cid>#<cr> 

 
where:  
 
<cid> - is the index number of the desired context to be used (up to 5 different context) 
 
•  wait for response: 
 

CONNECT 

 GPRS connection is being 

processed 

proceed ahead with the 

authentication & Packed data 

protocol 

ERROR 

some error occurred 

check context parameters and 

retry. See par. 1.2.1, 1.2.2, 

1.2.3 

check also Network registration 

status. 

 

+CME ERROR: <error code> 

 

some error occurred 

check context parameters and 

retry. See par. 1.2.1, 1.2.2, 

1.2.3 

check also Network registration 

status. 

 

 
For example: 
 
1- Let's assume you want to activate and enter the GPRS state with context number 1(cid) written 
before with your GPRS requested QoS parameters: 
 
command: 
ATD*99***1# <cr> 
response 
CONNECT 
 
At this point, your application should start the PPP protocol with the LCP Exchange phase: 
 
ΠLCP Configure Request