Holographic Terminal: Or Trigraphic Terminal, rather. As mentioned immediately above, used just about everywhere for their dynamically-reconfigurableness. They were less ubiquitous in the old days, when the need to wear a pair of haptic gloves with accelerometers, gyroscopes, and force-feedback made them at least a little inconvenient, but in these modern days first of haptic node implants and now of compatible locicyte networks grown right into people’s fingertips, they’re absolutely everywhere.
Computer Voice: Played straight with house brains and some institutional computers that talk to everyone around. Played somewhat straight with muses, terminals, and various other more personal machines, with the twist that they’re talking to you inside your own head, on a secondary audio channel that doesn’t interfere with your ability to hear. And can pick up your surface thoughts in reply, not just your subvocalization. No-one wants to have the cellphone-conversation social problem made 10,000 times worse by people’s personal computing devices, after all.
And the voices, even the internal ones, are generally completely customizable to the user. After all, when you have a constant companion inside your own head, you want to enjoy listening to them, right?
Comm Link: In the modern era, the ubiquitous neural lace, which is actually built into your brain, or at least, wrapped around your brain so you can talk with your thoughts. Earlier than that, the wearable virtual interface, which was worn as fancy glasses and a few other discreet devices, and subvocalization was the order of the day. Earlier than that, the ubiquitous (and often still carried as a display/collaboration device) terminal, which was basically a fancy smartphone/tablet, only with more computing power and based on mesh networking sending digitally encoded audio in encrypted network packets rather than our cellular system (see Can You Hear Me Now?) – its descendants still use the same back end.
By themselves, they don’t help you accessing alternative communications or if you’re outside of the range of their parent network, but you can add supplemental devices to your personal-area network to interface with alternative systems, or reach the network from out of range via relay, satellite, or even tangle.