At first time I set interval 20 seconds but did not work, then I made a call to service guy who told me that SMSC timeout interval is 90 seconds, then I set to 80 but also did not work. For now connection status is bond, it does not stop but client_evEnquireLink still does not fire

Hello

I use Inetlab.SMPP v.1.1.20.0. FULL VERSION. My configuration is same as your example

_client = new SmppClient
{
Timeout = 60000,
NeedEnquireLink = true,
EnquireInterval = 80,
RaiseEventsInMainThread = true
};

The same configuration works for one SMSC and doesnot work for other ...

I send Eqnuire link automatically but client_evEnquireLink does not fire and after some time connection status becomes closed. Why is that happening?