I just switched to Linelink as I wanted any kind of escape from the money-grubbers at Comcast. I looked at Vonage as well, and although the LineLink product as yet lacks a lot of the "bells and whistles" that Vonage and others have, I am hoping that this is because it is a new service and they hurried it out the door. I have no problem with this as long as they show up eventually.
For my part I have gone from paying $25 to Comcast to $10 a month to T-Mobile; there is a reduction from $20 to $10 if you have a T-Mobile account. There was also a $20 activation fee, but if I stay with the service that will be irrelevant.
I set up the voice mail according to prompts and in general it seems to be functional. The blinking blue light on the VOIP gadget tells you there is voice mail, but there is also a slightly different dial tone when you first pick up the phone, which gives tells you there is voice mail. This is also how Comcast does it.
 I also think the delay from when you dial "1-2-3" to when you get connected to voicemail is rather long - it is long enough that you might think it's not working and hang up.
The two questions I have on the voicemail are:
- During setup, you can enter a "pager number" which will be alerted when you get voicemail. I tried putting my cell number in the hope that it would send me a text, but it does not - is it really set up for a pager
- You are prompted to set a PIN for access to the voicemail, but there is an option to not require it if retrieving voicemail from the phone itself. This implies you still need the PIN if retrieving the voicemail from elsewhere, but I cannot find any information on how to do that.
Looking forward to the following being added:
- email alerts of voicemail, preferably with voice to text translation and sound file attachments
- call screening
- call blocking
- full/enhanced caller ID