TJBChris | TRS-80 Model 12: Dialing Into XENIX Using A Tandy 300 Baud Modem And Radio Shack Phone @TJBChris | Uploaded December 2020 | Updated October 2024, 4 hours ago.
In this video, I dial into my TRS-80 Model 16 using my TRS-80 Model 12 connected to a Tandy DCM-6 300-baud modem. Since the modem is "dumb", I use a Realistic Chronofone-255 alarm clock/phone combination to do the dialing. In this video, I show the connect process, interact with XENIX on the Model 12 via the modem, and then look briefly at how it's done on the Model 16-side.

If you want to know more about the phone/VOIP setup, check out Part 2 of my '90s Dial-Up Internet Simulator video:
youtu.be/35WuBUALryc

If you like to jump around, here's the index:
Intro (0:00)
Setting up the Serial Port/Opening Terminal (0:31)
Dialing The Model 16 (1:21)
Logging Into XENIX (1:39)
Doing Things in XENIX (2:14)
Terminal/Connection Info (4:17)
Logging Out & Disconnecting (4:43)
The Chronofone-255 and Dialing Back In (5:00)
The Model 16 Side (5:45)
The Other Modem And VOIP Setup (6:22)
Outro (7:28)

I do these videos unscripted, so I apologize if the in-the-moment descriptions of things are a bit all-over-the-place. If you have any questions/comments about this video, you can find me in any of these fine locations:

The CoCoTALK! Discord Server
The TRS-80 Color Computer (CoCo) group on Facebook
The CoCo Crew Podcast group on Facebook
On the Vintage Computer Forums (vcfed.org)
The TRS-80 Models I-4/4P Group on Facebook
Tandy / Radio Shack Model II /12 / 16 / 16B / 6000 Owner's Group on Facebook

Thanks for watching!