Thanks rusanov.  I strongly believe that the issue with Iridium nothing to do with azure.

can you help me to resolve it ?

are you trying where? It requires for connect azure iot hub

what you send me is username password may expired  try below one. you can cross check with mattbox.

SharedAccessSignature sr=philips.azure-devices.net%2Fdevices%2Fsensor1&sig=2lQko76Fzjhxck%2Fx3iqSh1uJlvLDIhsVELu8PGkzoKk%3D&se=1499607655

mqtt.irpz

Is there anyway to troubleshoot the outgoing and incoming messages. i am not getting  publish word in the debug window but from third party tool which i send publish topic them i am getting publish word in debug window.  i am trying with azure iot hub

you mean to say 

mqtt publish ---> mqtt command ?

mqtt subscribe --> mqtt feedback ?

can give a example of mqtt publish and subscribe on iridium

After this how do i access this client page