# Chapter 1. Introduction

This user manual is intended to describe the contents and use of the softphone. is a KDE client for .It communicates with the core side through DBus. is meant to be a robust enterprise-class desktop phone. It provides functions like call transfer, call hold, multiple lines, multiple accounts support. It is SIP and IAX2 compatible. audio layer is build upon a native ALSA interface and and a native PulseAudio interface.