I like that it allows me to check voicemail remotely, which can be helpful when my phone isn't at home or in reach of someone else who could answer an incoming call from another person (like if they're working out).
It also has some nice group calling options as well - but this feature was not included by default so you have add those yourself! Great product overall though; easy set up process/easy tech support via email / chat option available 24 hours per day 7 days week year round during normal business operating times!! We've been able solve our issues quickly through their customer service team while having access all over time zones within North America & Europe using VoIP services provided thru them :).