First Setup

You need the SIP credentials supplied by your provider. They may differ from the credentials for your customer account.

Add the first line

1. Open TelefonX › Settings … › Lines.
2. Click Add Line ….
3. Enter a descriptive name, such as “Office”.
4. Enter the Domain / Server, SIP Username, and Password.
5. Under Connection, select UDP, TCP, or TLS exactly as specified by the provider.
6. Keep Line Enabled switched on and save the line.

TelefonX stores the SIP password in the macOS Keychain. Enter the server as a host name or IP address, optionally followed by a port – without sip:// and without a path.

Grant permissions

macOS requests microphone access when it is first required. Allow it so the remote party can hear you. A local phone system can also cause macOS to request local-network access.

Permission	Required for
Microphone	placing calls
Contacts	read-only display of Apple Contacts
Notifications	incoming calls and callback reminders
Focus status	Do Not Disturb synchronization
Automation	pausing Apple Music or Spotify during a call

Connect and make a test call

The line list and menu bar icon show the connection status. Once the line is connected:

1. Open the dialer.
2. Enter a reachable test number, extension, or SIP address.
3. Verify the selected line.
4. Click Place Call or press ⌘ + Return.
5. Check the microphone and call audio in both directions.

If registration fails, first verify the server, username, password, and connection type. Then use Reconnect. See Fix Connection and Audio Problems for more help.