Originally Posted by
joedish
Whether or not UA discontinued this service is immaterial. The bigger issue here is the following: times change and you need to do so as well. If you can take the time to look up a hotel fax number then you can also look up the hotel email address (all hotels have email addresses) and send a pdf of your boarding pass to them to print for you.
Given that the OP specifically asked if they had discontinued it, I would say it is material. If they have discontinued it, it would be due to the reasons listed in the many snarky posts here.
I have had numerous occasions in the past year where companies, or government (local) agencies wanted me to fax them things, and I had to go through a long process to figure out if I could just email them documents. Faxes are definitely on their way out, but they are not completely dead yet.