[Asterisk-Users] limiting incloming call on sip phones to 1

[Anton Krall]

Hey Guys!

I know sip hpones can be configured to disable call waiting but this is for
all call appearances. I was wondering if there is a way to limit outgoing
calls (asterisk -> phone) to a sip phone (techonology) to 1? 

Is there any other way of doing this without groups or such? Any kind of
settings on sip.conf for this?