# Introduction

This user manual is intended to describe the contents and use of the &sflphone-client-kde; &sflphonerelease; softphone. &sflphone-client-kde; is a &kde; client for &sflphone;. It communicates with the core side, sflphone daemon, through &DBus;. &sflphone; 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. &sflphone; audio layer is build upon a native ALSA interface and a native PulseAudio interface.