Looks like a C&P error from the AT#PSNT codepath; all the docs
I can find indicate that AT+SERVICE returns only an integer and
no commas:
<debug> (ttyUSB2): --> 'AT+SERVICE?<CR>'
<debug> (ttyUSB2): <-- '<CR><LF>+SERVICE: 3<CR><LF><CR><LF>OK<CR><LF>'
<debug> Couldn't refresh access technologies: 'Failed to parse +SERVICE response: '+SERVICE: 3''