Twinkle is a softphone for your voice over IP and instant messaging communications using the SIP protocol. You can use it for direct IP phone to IP phone communication or in a network using a SIP proxy to route your calls and messages.
In addition to making basic voice calls, Twinkle provides you the following features:
- 2 call appearances (lines)
- Multiple active call identities
- Custom ringtones
- Call Waiting
- Call Hold
- 3-way conference calling
- Mute
- Call redirection on demand
- Call redirection unconditional
- Call redirection when busy
- Call redirection no answer
- Reject call redirection request
- Blind call transfer
- Call transfer with consultation (attended call transfer)
- Reject call transfer request
- Call reject
- Repeat last call
- Do not disturb
- Auto answer
- Message Waiting Indication
- Voice mail speed dial
- Missed call indication
- History of call detail records for incoming, outgoing, successful and missed calls
- Automatic failover to an alternate server if a server is unavailable
- Other programs can originate a SIP call via Twinkle, e.g. call from address book
- System tray icon
- System tray menu to quickly originate and answer calls while Twinkle stays hidden
- User definable number conversion rules
- Simple address book
- Presence
- Instant messaging
- Simple file transfer with instant message
- Instant message composition indication
