Some quick things I notice:
- Appears you need Office 365 E3 Plan at $20/user/month to get voicemail (or Lync Online Plan 3)
- Jajah plans range from $13.99 to $29.99 for unlimited
- Voice features supported (source)
- click to call
- Call Via Work
- Forward call to mobile devices
- Exchange Online Voicemail preview/transcription
- Drag and drop Conference Calling
- Auto Attendant through Exchange Online voicemail
- Delegate
- Team Call
Some Features NOT in Lync-to-Phone
- Call Admission Control
- Interop with PBX
- Response Groups
- Branch office resiliency
- Lync IP phones
- Exchange Auto Attendants
Office365/Jajah FAQ:
http://jajah-en.custhelp.com/
Jajah SignUp:
https://voice4lync-us.jajah.com/registration/reg-plan-and-account-info
Office 365 Plans:
http://www.microsoft.com/en-us/office365/all-plans.aspx#fbid=Om7h2H0L3gM
http://www.microsoft.com/en-us/office365/compare-plans.aspx#fbid=Om7h2H0L3gM
More Sources:
http://blogs.technet.com/b/lystavlen/archive/2012/07/05/lync-to-phone.aspx
