There are two different between Relay on Sidekick and native TTY.
On Sidekick, too impossible to give incoming call. For AIM relay, it can. What I found is... it pretty waste the time. Imagine that you have to typing and it will not reply until you hit submit to place the message on IM. For IP-RELAY on sidekick, no incoming, only outcoming.
Native TTY plug with sidekick or any mobile with TTY compatible that will work on both incoming and outcoming, great for VCO user, also. It work great on Krown's Pocket Series.
I admit, it's hassel to have two devices along with you, at least, it's better than have Ultratec's Compact C which is much larger than PocketComm or PocketVCO size.
