Sonata Communicator is an advanced Windows Softphone for Call Centers which integrates Presence, Chat, Video Call, BLF, and much more.

Phone Features
We have included all the features that a Softphone should have to operate in a Call Center. Among which we can mention: Hold, Transfer, Conference, Auto Answer, Do Not Disturb, Call Recording and Multiple Accounts. It is also possible to register with different accounts at the moment of startup the Softphone.
Call Center
We have integrated Call Center functions such as LogIn, LogOut, Pause, UnPause. In the case of pauses, it is possible to declare them with a cause, eg: Restroom, Lunch, Break, etc. Very useful to obtain later in reports.
Sonata Communicator includes a Chat system that works over the SIP protocol.
Sonata Communicator includes 'Presence', by monitoring the contact status. It is also possible to associate a manual presence status, by sending a message automatically when we are required through the Chat.
Security in Sonata Communicator is our priority, the Agent will only have access to menus and functions that the administrator allows them to have.
End User Features
Support of all kinds of Internet connections
  • Multiline support
  • Multiple sip accounts registration
  • Multi-party voice conference
  • SIP Registrar support (compatibility with most of SIP servers including Asterisk)
  • Works under firewall
  • IM interface
  • Selecting of media input and output devices
  • Custom ringtone support
  • Configuration saving and loading
  • Conversation Specific Features
    Hold/Retrieve Call
  • Forward Call (Blind Call Transfer)
  • Transfer Call (Attended Transfer)
  • Noise reduction (supression)
  • AGC (Auto gain controller) support
  • Adaptive silence detection
  • Adaptive jitter buffer
  • Software volume control (including Mute Sound)
  • Recording conversation into file
  • Redirection of calls to other phone lines
  • Call history and address book ready
  • Available Codecs
  • H.264
  • G.711 (ALaw, muLaw)
  • G.726 (16k 24k 32k 40k)
  • *G.729A
  • G.723
  • *OPUS
  • iLBC
  • LPC-10
  • Speex (Narrow, Wide)
  • L16
  • RFC4733 DTMF tones
  • GSM
  • *VP8
  • *Business Version
  • Protocols Support
    SIP (Session Initiation Protocol)
  • RTP (Real-time Transport Protocol)
  • SDP (Session Description Protocol)
  • TCP (Transmission Control Protocol) /UDP (User Datagram Protocol)
  • STUN (Session Traversal Utilities for NAT)
  • ICE (Interactive Connectivity Establishment)
  • Others
    NAT (Network Address Translation) support
  • Encryption on the basis of sRTP, DLS, and DTLS
  • DTMF (Dual Tone Multi Frequency) support
  • SIP Authentication
  • Codecs management
  • Log file on/off setting
  • List of Phone Features

    5 Concurrent Calls
  • Multiple Accounts
  • Conference
  • Hold
  • Blind Transfer/Attended Transfer
  • Do not disturb (DND)
  • 50 BLF (Hints)/Speed Dialing Key
  • Auto Answer
  • Video Call
  • Call Center

  • Pause/UnPause
  • Record Call
  • PickUp Group
  • Integrated Dialer
  • Chat

    Chat Over SIP
  • Chat History
  • Block Contact
  • Emojis
  • Presence

    Custom Presence
  • Auto Send Chat Message
  • Contact Status (Busy, Ready, DND, Ring)
  • Dialer

    Sonata Communicator brings a built-in Dialer to make outgoing calls, this dialer speeds dialing of phones that were previously loaded from a CSV file. Each time the Softphone makes a call, a popup appears with a previously configured form where the customer's information will be displayed, and the Agent can register any comments and catalog if the call is successful or not. Once the campaign is finished, it is possible to obtain the results of the campaign.


    Protected Account Configuration
  • Protected Access Settings
  • Protected Database
  • Password Access
  • Differences between Standard and Business Version

    Features Standard Business
    Multiple Accounts
    Video Calls
    52 BLF (Hints)/Speed Dialing Key Limited to 3 BLF 52 BLF
    Chat 5 Contacts Unlimited
    Presence 2 Presence Status 10 Presence Status
    Call Center LogIn/LogOut
    Call Center Pause
    Record Call
    Auto Answer
    Do not disturb (DND)
    Check Voicemail Button
    Address Book
    Call Logs
    Outbound Proxy
    Voice Activity Detection
    Acoustic Echo Cancellation
    Configurable Ringtones
    Voicemail Support (Message Waiting Indicator)
    Custom Skin
    Codecs G.729A, Opus, VP8 not included
    Sonata Communicator Server* 2 Business License Free
    Licensed Free Buy
    *Sonata Communicator Server is an add-on that is installed in VitalBX, with which you can synchronize buttons, cause pauses and centralize the licenses of Sonata Communicator.

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