Find the Modem, SEB, ION, or other remote access device that is plugged into one of your TTY ports for access. Un-Plug the line cord and plug it into a 2500 set. Dial your cell phone and record the number. Plug the line back into your device. Check that TTY port for the correct Baud rate.
Dial that number from your PC using Procomm or Hyper-terminal to access the switch, using that Baud rate. That's it.
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