incoming call not displayed when application running in a smartphone

[Tiago Pereira]

Hi,

I've struggling a few days with a bizarr situation.
I've a cf smartphone application, that stablish a tcp connection trough
a GPRS connection with a TCP Server. When the application is running if
an incomming call is received is not displayed in the smartphone, and
the caller is receiving the calling tone.
I do not know what is wrong ?
What i can do to avoid missing the incoming calls ?

Some info related to the implementation:

1) TCP implementation using Async Sockets (BeginConnect, BeginReceive,
BeginSend etc)
2) All the UI calls ( basically some textboxs) are updated using a
ControlInvoker class called from the callback methods.
3) Events are received each 3 seconds, server sends a packet each 3
seconds, and the result is displayed in a few textboxs.
4) The connection is stablished when application is started and is
closed when the application is terminated.

Advices will be much appreciated

Thanks
Tiago

 

[Alex Feinman [MVP]]

My understanding (I might be wrong) is that when packet data is actually
transmitted, the incoming calls are not received. If you simply keep the
connection, it's not a problem, but since your packets are sent/received
every 3 sec, it might be causing missed calls.

 

[Tiago Pereira]

Hi Alex,

Thanks for your input, but how that issue can be avoided ?
Is there away to subscribe calls notification ?


Thanks
Tiago