Phones are acting strange. Two phones with two different

This is really a different symptom of the other problem where I talk
about two phones that both dial the same number but the results are
very different.

Perhaps
this is clearer problem example and thus I did not want to bury it in the other post.

Asterisk attached Phone 1 (SIP phone) dials my cell phone After many rings my cellphone goes to voicemail.

Asterisk Phone 2 (different type of set analogue through linksys sip) dials my cell phone. All I hear on phone 2 is ringing.
However my cellphone has in reality gone to voicemail which I did not hear and
then recorded ringing when I listen to the received message. I hear nothing but ringing on phone 2.

wct wonders