T38 audio cutting out

[CWR]

So I installed, then reset the phone to factory. This way the phone gets a clean config.
I can not comment on paging issue yet.

From 3cx config:

The DND didn't program:
#Configure the DND key mode; 0-Phone mode (default), 1-Custom mode.
features.dnd_mode = 1

#Configure the DND on code and off code.
features.dnd.on_code = *32
features.dnd.off_code = *30

The call parks didn't program:
memorykey.1.line = 1
memorykey.1.value = SP1
memorykey.1.type = 10
memorykey.1.xml_phonebook =

So, I manually entered these values.
Then I have selected Phone,Auto Provision now option and the settings went away.