A two-way call between your own people, end to end encrypted
Push-to-talk is one voice at a time and one direction at a time. Some conversations are not that shape — a supervisor walking somebody through a fault, a handover, a decision that needs both people talking. Those are calls, and between your own staff they stay encrypted.
Different from push-to-talk on purpose
The radio stays exactly as it is. A call is a separate path, so keying the mic and taking a call are not competing for the same thing.
- Both people talk at once, with no floor to take and nobody waiting for a release
- Voice, or voice and video, between members of your organisation
- Push-to-talk keeps working — the channel does not go quiet because somebody is on a call
Encrypted between the two handsets
Unlike a telephone call, which has to leave our network for the public phone system, a call between two members of your organisation never needs to be readable by us.
- Keys stay on member devices; the relay forwards frames it cannot decrypt
- Video rides the same encrypted channel as the audio rather than a separate unprotected one
- If a channel is meant to be private, we refuse to carry anything that is not locked — checked by us, not just promised by the app
An administrator decides whether it exists
Calling is a policy question in a lot of operations, and video more so. They are separate switches for that reason.
- Calls on or off for the organisation, with video as its own toggle beside it
- Enforced on the relay, so turning video off stops the bytes rather than trusting the app not to send them
- Defaults chosen so an organisation is never opted into something it did not ask for by an update
What is honest about the encryption
The content of a call is end-to-end encrypted. The fact that a call happened is not, and cannot be — the relay has to know who to forward frames to.
- We can see that two members were on a call, when, and for how long. We cannot see or hear it
- This is not the same as World Phone: a call to an ordinary telephone number leaves for the public network and is not end-to-end encrypted, and that page says so too
- Version one has no forward secrecy, which is documented rather than glossed — a limitation stated is worth more than a badge
Would your crew use this?
Tell us whether the conversations that matter to you are one-to-one, one-to-many, or need video — it changes what we finish next.