T26 sends subscribe requests to SIP port 5060 but SIP server port is 37584

[fernando.lagper]

For security reasons, I'm using SIP port 37584 instead of 5060 for our remote sip stations.

After changing SIP port on our PBX, I have set T26P to use port 37584 on SIP SERVER 1 instead of 5060.

But after that change, both BLF and MWI stopped working, so I took a peek with wireshark and noticed that T26 subscribe requests were sent to sip server port 5060 instead of sip server port 37584.

I do not think this is the proper behavior, since it disables all PBX based features, like BLF, MWI, SHA, etc...

Would you be so kind to check it?.
Find attached below wireshark traces with the example (freshly rebooted phone), config.bin and level 6 debug.

::EDIT:: More descriptive thread title