I've been using Polycom phones for a long time, still SoundStations. When I retired I bought a 100 and when the last SoundStation died I bought a used 100. When I decided to use MagicJack for long distance and international calls I plugged in the analog RJ jack on my Polycom 100 into the socket. RJ jack on the MagicJack connected to the internet through my laptop - just for fun, sure it's not working. Well, for over a year I've been making mostly free national and international calls with MagicJack ($19/year, no extra charge) and a Polycom 100 connected to it. The combination works great and I've never had any echoing or tunnel-like complaints sound, you can read all the claims in the comments above. Nada. Just perfect calling for $19 a year, while my landline calls were about $800 a year. As I walk around my home office, on the phone, cooking and drinking coffee, leafing through folders and looking for information, Polycom picks up my voice anywhere in my approximately 10 x 20 foot home office and I can clearly hear who I'm speaking to. For me the perfect system at a super low price.
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