I'm also interested in any substitute for MJ to be free of powering a computer but as is usually the case, the devil is in the details. or you get what you pay for.
See this list of Ooma specs:
Most noted is cost for extension phones; 3000 min cap; fee for phone number; no FAX. Most of the fees are considerable cost per month. For now, I'll be sticking with MJ as I have it for 2 more years. I paid $60 3 years ago for the dongle and the service. Also, a feature I like with MJ voice mail is it sends the voice mail as a mp3 file to my cell phone.
Don -
Ooma does offer an extension phone, but its not needed. Your existing phones work fine.
The cap is 5000.
Lack of continuous conversation, unusual calling patterns, excessive caller and calling destinations and/or excessive usage (e.g. 5,000 minutes per base unit per month or more) will be considered as indicators that your use of the Equipment may be inconsistent with normal residential usage.
I have Ooma premier which is $9.99 a month, that includes a 2nd no. If you pay the 9.99 fee for a year they waive the cost if you want to port your home no. to Ooma.
You can fax just fine, it just requires a *99 extension before the no.
Ooma works very well, but as in any voip service it all depends on the quality of your internet provider.
I paid the 9.99 for the year, but there are fee's.... 911.....etc. Which for me are $3.47 monthly