Hello!
There is a problem when working on the TLS protocol after the Internet disappears. PhonerLite changes TLS port.

Environment: Windows 10 x64, PhonerLite 3.03, and older versions.

Steps to reproduce:
1. Register SIP account via TLS protocol on port 5071.
2. Disconnect the Internet connection for 30 seconds.
3. Look at the TLS port of the connection. 

Actual Results:
TLS port has changed to another 5070 when it must be 5071.

Expected Results:
TLS port hasn't changed.

Screenshots:
Register to TLS port 5071

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After the Internet connection fails PhonerLite tries to connect to another TLS port 5070:

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Summary, Registration of SIP account had been failed:

Thank you very much!
It helped me.