I have a Straight Talk Wireless sim card with 3G/LTE coverage which i am using with a UBLOX TOBY module to do TCP connections.
The procedure is as follows
Perform a PDP context activation (AT+UPSDA=0,3)
Open a TCP socket
Deactivate PDP context (AT+UPSDA=0,4)
The above procedure works fine for about 30 transmissions and then it keeps on failing (i.e. AT+UPSDA=0,3 returns error) for about 10 minutes. Is there a network/service limitation that only allows 30 PDP context activation within a certain amount of time. Can you please advise.