I finally had some time to experiment today. First, I rebooted the HD2 handsets and the Ooma Telo in order to rule that out. I called my Oooma home phone several times from my laptop using a Google Voice number that is not in my contact list.thunderbird wrote: Try rebooting the Ooma Telo to stop the Panasonic phones from ringing after the call is answered with the HD2 handset.
If the reboot doen't help, call Ooma Cutomer Support, ask for third level support and have them "push" out a later version of Firmware for your Ooma Telo.
I found that the HD2 handset starts to ring about 1 or 2 seconds after the Panasonic phones start to ring. The Panasonic phones start to ring around the second ring heard from the laptop. After answering with the HD2 handset, it seems like it takes about 2 seconds for the connection to be established, meaning I can't talk for the first few seconds. The Panasonic phones continue to ring for about 3-7 seconds after I answer on the HD2 phone.
When I answer on the Panasonic phones, the ringing immediately stops, of course, and it seems like the phone connection is established nearly immediately.
I'm planning on doing some more experimenting to see whether the picture contacts that I mentioned in a previous post is really causing additional delay in the HD2 handset starting to ring.
I'll probably also wait on the next official firmware instead of requesting one from support.