How do you get to that? Not domestic right?
Via FT:
The following aircraft types have "From the Flight Deck" installed (commonly known as "Channel 9," as that's the location it is found on audio handset selectors):
pmUA 777-200ERs
pmCO 777-200ERs
pmUA 777-300ERs
pmUA 777-200As (high density, first class only)
pmUA 767-300ERs
pmCO 767-400ERs
pmUA 757-200 (28J p.s.)
pmCO 757-200 (16 p.s.) -- To be retrofitted with cabin refresh per Oct 2019 announcement
[pmUA A320 and A319 aircraft have had it removed. It is not installed on any 737s, 787s, nor pre-2019/2020 refresh pmCO 757-200s (16J p.s.) or pmCO 757-300s.]