Q52 Omni Tracking Application Note can't work yet

hi,

i’m using Q52 omni and has downloaded the application note obtained from wavecom’s download field.
The application note have the modem send message through GPRS and ORBCOMM network.
the question is why my q52 can’t send the message via GPRS ?
i have loaded parameters :

-------------------------------------------------
Please enter AT+SETGPRS="<GPRS_APN>","<GPRS_USERNAME>","<GPRS_PASSWORD>","<SMTP_
SERVER>","<SMTP_USERNAME>","<SMTP_PASSWORD>","<SENDER_EMAIL>"
-------------------------------------------------

and the result is

[GPRS]: open: -> DISCONNECTED                             
[GPRS]: start: -> CONNECTING                            
[GPRS]: GPRS EVENT SETUP OK (cid=1): GPRS activate                                                  
[GPRS]: GPRS EVENT: 27 (cid=1)                              
[GPRS]: GPRS EVENT ACTIVATE OK (cid=5)                                      
[GPRS]: GPRS: -> CONNECTED                          
Successfully init GPRS                   

at+setgprs?           
<GPRS_APN>= www.xlgprs.net                          
<GPRS_USERNAME>= xlgprs                       
<GPRS_PASSWORD>= proxl                      
<SMTP_SERVER>= smtp.yahoo.co.uk                               
<SMTP_USERNAME>= habibur_muhaimin@yahoo.co.uk                                             
<SENDER_EMAIL>= habibur_muhaimin@yahoo.co.uk                                            

OK

lets see the sentence above. I successfully init GPRS. But, when i have send the message, the result is:

----------
Time: 07:36:06   06/08/2009
latitude:(0841.2482 S) longitude:(11514.5087 E)
----------
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
                WARNING
****************************************
         FEATURE NOT ACTIVATED
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

feature not activated.
what should i activate again ?
can anybody explain this ?

Sounds like a question for your Distributor