Networking and Firewall Issues

Tuple: API Backend

Make sure that you can access, from which we serve the API for authentication and to populate lists of your contacts.

Twilio's Network Traversal Service (NTS): TURN Relay Servers

When it's not possible to obtain a peer-to-peer connection through local or public networks, Tuple uses Twilio to route media data through TURN servers.

If you're having issues establishing a call, see Twilio's Networking Requirements docs and general information on the Network Traversal Service.

Ably: Signaling

Tuple uses Ably to facilitate the initiation of calls between peers and to provide availability (active/inactive/busy) status updates to clients.

If you're having issues with the list of available users, see this support article about whitelisting.

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