Blippo/ACC

In Blippo+, ACC is an unused local access channel on channel 72 showing test cards.

There aren't any shows here. But the EPG shows there are planned slots:

"AUX acccess" shows the words "AUX access only" over a grid of brightness-changing rectangles, with a bit of noise and distortion over it
"Local access" shows the words "This channel is reserved for local access" over various grid patterns, among them a garbled version of something similar to Earth's Philips circle pattern. There are also sometimes some cropped words at the bottom.
"Universal access" shows the words "Channel locked for universal access" over a fixed dot patters that presumable represent stars.
"Global access" shows a rotating globe, presumably with the landmasses of Blippo.
...

The naming results in a nice progression from AUX (=home) to local, global and universal. Interesting that things like "country" and "continent" are jumped over. Maybe Blip is sparsely populated?
...

While "Local access" is a thing, the others are not. In the analog era, at home, "AUX" devices are easier connected if there isn't a signal already present, so there weren't ever any broadcasters actively broadcasting "AUX access" channels.
"Universal access": pun
...