[asterisk-users] forward skinny call to SIP

[nik600]

Hi i have to do the following setup:

1 - i receive a call on skinny protocol
2 - i forward the call to a sip user

I think that the skinny phone must be registered on asterisk, in a
particular extension, for example:

[skinny_internat_ext]

987,1,Dial(SIP/user at host)

And if the skinny phone dials 987 i make the call to SIP/user.

But how can i do that if the skinny phone isn't registered to Asterisk?

Thanks in advance