SIPob is a SIP (Session Initiation Protocol) outbound dialer that provides User Agent (SIP-UA) functions (Based on RFC 3261) for Windows (Vista, 7/8/10, 2008-2019 Server).


  • Simple, easy to use interface.
  • Supports (Only) G.711 A - Mu law codecs.
  • Supports UPnP for NAT traversal. You can also set external IP address manually.
  • Supports multiple dialer profiles can be run simultaneously.
  • Real time monitoring.
  • Excel reporting.
  • Imports phone numbers from text files to dialer profiles.
  • SIPob executes user defined scenarios when remote party answers.
  • SIPob supports Text to Speech (TTS) with Microsoft SAPI, Google Cloud SAP.
  • You can select your own audio files to be used in dialer profiles. SIPob can also read-out texts using TTS (Text-to-Speech) engine.
  • You can specify SIP routes based on dialed prefixes.


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