Grandstream GXP2110 4-Line Key System IP Phone, VoIP Phone and Device

Running 4 of these phones and the Grandstream DP715 in a company settingwith an Asterisk server for more than 6 months. All phones work flawlessly, very good setof functions.Audio quality is very good and the headset function and interface works very wellwith Plantronics wireless headset CS series.The phones web based administrator configuration menu could be more user friendly.Downloading the phones manual from Grandstream's website is mandatory to understandall functions.The Grandstream website also offers SIP config files and many other good support tips.For the price this is a great phone in VoIP Asterisk setting. Did not use it as a SIP endpointfor Vonage or other SIP endpoint setups.

we used to phone at our office to connect with our VoiP system. Unfortunately the set up was difficult (we had to send it in to have our provider program it) and also when you talk to someone on this phone there is about a 1-2 second delay from the time you speak to when they hear you. Very odd. We plugged in a different brand phone and the problem no longer existed.

Only problem I had one with a problem with switch hook. I have put in a request for replacement and have heard NOTHING>

Great product for a great price.