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Level 2

Thank you Venu for your reply.  I have read the documentation at the link you provided, however it does not speak to the issue I am having.  I have the application external account configured with all the vendor given parameters.  The issue I am having is at a network layer.  The application is not able to make a network connection with the vendor server.  I can see in the logs that the initial BIND PDU is failing to connect to the vendor SMPP server.

Have you successfully setup an SMPP connection where the SMS provider requires whitelisting the incoming IP address?