Mine

sip.cfg

<user_preferences up.headsetMode="0" up.useDirectoryNames="0" up.oneTouchVoiceMail="1" up.welcomeSoundEnabled="1" up.welcomeSoundOnWarmBootEnabled="1" up.localClockEnabled="1" up.backlight.onIntensity="" up.backlight.idleIntensity="" up.mwiVisible="1" up.toneControl.bass="" up.toneControl.treble="" up.audioSetup.auxInput="" up.audioSetup.auxOutput="" up.idleTimeout=""/>

phone1.cfg

<msg msg.bypassInstantMessage="1">
 <mwi msg.mwi.1.subscribe="" msg.mwi.1.callBackMode="contact" msg.mwi.1.callBack="8500" msg.mwi.2.subscribe="" msg.mwi.2.callBackMode="registration" msg.mwi.2.callBack="" msg.mwi.3.subscribe="" msg.mwi.3.callBackMode="registration" msg.mwi.3.callBack="" msg.mwi.4.subscribe="" msg.mwi.4.callBackMode="registration" msg.mwi.4.callBack="" msg.mwi.5.subscribe="" msg.mwi.5.callBackMode="registration" msg.mwi.5.callBack="" msg.mwi.6.subscribe="" msg.mwi.6.callBackMode="registration" msg.mwi.6.callBack=""/>
 </msg>