I have the same Medtronic unit in the bedroom. Medtronic told me that it would not work with VOIP and I absolutely had to have an analog phone line. Can't get it here and McDonalds won't let me use their line!
My first setup was with Vonage.................FAIL........Fail.............FAIL...........Did I mention Fail?
Magic Jack......................NOT!
Third was with a Cisco SPA 122 and
Voip.ms...............PASS! Setup was easy
Currently working on setting up a OBIHAI 202 with
Voip.ms and it will work too. Testing it right now.
You need to use the higher bandwidth codec G711U. I have a separate line and number for the Medtronics box. I use it like a fax line but without T.38 just fixed on G711U.
I am also using a mobile Internet connection with Bell Mobility and a very junky Netgear MBR1516 4G Turbo (they claim) hub.
For your information..................This is what I have seen with my units.
If you hold the antenna over your pacemaker/icd and push the button on the box, it will download the info from your device and call into the Medtronic office to verify that all is well.
When the device downloads by itself, it forces the Medtronics box to call another number to downlod the info to.
If all is well, the test call lasts about 3 minutes. A for real download last about 90 seconds.
At least that is the way mine seems to work. The doctor and Medtronic are happy with the downloads.
PLEASE VERIFY ALL OF WHAT I HAVE SUGGESTED BEFORE YOU TRUST IT!!!!!!!!
Everybody has been very secretive about what the Medtronic box does so I had to monitor the data and phone lines to figure it all out.
No magic. Just basic electronics.
Forget Google Voice and all the other free or almost free services.
Checkout the commercial services. Even with their premium services your charges will be very cheap and they will be reliable.
You need to keep that Timex Ticking properly!!