Iphone

Hi there, i am a master student from Hong kong Polytechnic
University. Since i am now doing a research on on embedded
application by using GR47 + m2mpower package, i encountered
sorts of problems, may i ask u a few questions here?? May be
it juz take u a few minutes to answer my question.

I wanna set up TCP/IP connection since it it workable by
using GR47. SO, i try the source example code by using
m2mpower application. I download the code on to the GR47 and
it is not workable though.

the IP and Port i want to connect:
IP: 202.125.204.109
Port: 1500

And the another side i wrote a java program which is
listening the socket(i am sure the java program is
workable). And the java is gonna receive the data which is
sending from GR47. But i still cant receive response....

The question here i wanna ask is:
1) TCP connection is running based on GPRS on GR47??

i try to type these commands in hyper terminal:
AT+CGDCONT=1,"IP","3-DB-GPRS"
OK
*it seems tat GPRS is workable

2) Are there any problems in my m2mpower script??
(i juz copy them from example script, should be alright)

3) Do u have any suggestions on how can i connect my Gr47 to
the destination socket??
eg.IP: 202.125.204.109
Port: 1500

Sorry for spending ur time on my questions. Cuz it is very
urgent, so i do appreciate ur help. Anyway, i am looking
forward to ur reply. thx a lot!!

Best Regards,
Roy

THe C Script of m2mpower:

main()
{

int APPS_CALL_STATUSBYTE = 5;
int RINGING = 1;
char Buff[33];
char TCP_CONNECTED = 2;

int Port = 1500; /* 1500*/
int IPAddr = 0xCA7DCC6D; /*202.125.204.109*/

int DATASIZE =256;
char Data[DATASIZE] = "Send Packet";
int TCP_STATUS_BYTE = 14;
char SckNum;
int err;
char Timeout = 0;
int Size;

/*Waiting for request then sendind data start afterwards*/
while(1)
{
prtf("\nWaiting for incoming call...");

if(gtb(APPS_CALL_STATUSBYTE) == RINGING)
{
clip(Buff,32);
prtf("\n Ringing from %d",Buff);
break;
}
dlys(1);
/*TCP Connection and sendind data*/
err = pdpa(1,1);
if(!err)
{
err = ipo(1,1,&SckNum); /*PDP context 1, TCP Type*/
}
if(!err)
{
err = tcpc(SckNum,Port,IPAddr);
if(!err)
{

while((gtb(TCP_STATUS_BYTE) != TCP_CONNECTED) && (Timeout < 100))
{
prtf("\n waiting for connection!");
dlys(1);
Timeout++;
}
if(Timeout < 100)
{
Timeout = 0;
Size = DATASIZE;
err = tcps(SckNum,Data,&Size);
if(!err && Size == DATASIZE)
{
prtf("\n Sent OK!");
}
}
}
}
break;
}
}

Iphone

Sorry that I could not go through your script completely. There a couple of points:
1. TCP/IP connection uses GPRS (answer to your question)
2. You need to verify if the machine running Java program to accept socket connection is accessible from the modem. Fire walls on both (client and server) sides should allow such connections.
3. If the above is there, then you need to check if your service provider is blocking traffic on any particular ports. You can try out with different ports.

Let me know if none of the above works.