Telnet to sdf.org - anyone have success?

[fuzzybad]

Hi all,

Has anyone had success connecting to sdf.org shell account?

So far I've been able to connect my WiModem to BBS's, commoreserver.com, and Q-Link Reloaded.  Is it possible to connect to a shell account via telnet, for example using sdf.org?

Here's what I'm trying:

ATDT SDF.ORG:22
Response: CONNECT [connection freezes]

and

ATDT SDF.ORG:23
Response: [some SSH information, then connection freezes]

Any tips?  Perhaps I need to specify a different port number?