Transparent Mode in Cinterion PHS8-P or PCS3 Modules. | Thales IoT Developer Community
August 26, 2014 - 2:29pm, 2501 views
Dear Sir,
i am using Cinterion PHS8-P and PCS3 modules in Transparent Data Transfer Mode to communicate with Remote Server.
I am using ASC0 Interface to operate these modules. i want to know that whatever data transmitted by me that data has been transmitted to Remote Server or not. is there any way to know this? If there is any way to know this than pls inform me.
Aug 26 2014 - 4:47pm
Hello Akshay,
what protocol are you using? UDP or TCP? If UDP is used you never get ack from the server. Due to that you cannot be sure if the data has been delivered or not. You have to implement some acknowledgment mechanism on top of UDP to accomplish this.
If using TCP connection every packet is acked and retransmitted if not delivered. If after some time the data is still not delivered the connection is dropped. Error code can be checked with AT^SISE command.
There is no built-in method to explicitly check which packet has been delivered and which has not. To do this, the best way would be to implement your own TCP or UDP based simple acknowledgment protocol.
Regards
Jedrzej
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