I can do IM skype to sip and sip to skype

I can call from skype to sip 

When I try to call from sip to skype it immediately goes to voicemailbox 1000(which does not exist).

Actually about 1 in 20 times I can complete a call . 

dialplan

<extension name="ext_skype_user">

<condition

field="destination_number"

expression="^skype/(.*)$"

>

<action application="log" data="DEBUG !in the skype extension"/>

<action application="info"></action>

<action

application="bridge"

data="skypopen/skype101/$1"

></action>

</condition>

</extension>

log