I am configuring my Linksys SPA 3102 for a Skype SIP Profile, but the trunk never been registered.

[sevende11]

Any questions.

Is Linksys SPA 3102 Skype compatible?

How can I confirm that my Skype account is realy operative?

[nseto]

If the phone number is used for the User ID, it should be fine.  If the phone number isn't the User ID, the ATA will likely reject the incoming call.