All calls going directly into voicemail?

have asterisk@home serer running with 6 of the new Linksys 941’s. All phone are registering with Asterisk but when I dial another extension it says that person is on the phone, nothing will ring it goes into v/m. I have checked the phones are not in DND???

What does the CLI show, with a verbosity of 4, when you make the call? It sounds like your extension is not sending the call to the correct SIP device. Post back your extensions.conf and sip.conf (minus the secrets).