Grandstream GS-GXP2160 Enterprise IP Telephone VoIP Phone and Device, Black

A well made, and good looking phone. PoE works fine with my Ubiquiti PoE switch. A few glitches with some of the inbuilt programs - weather doesn't work, though it appears there is a fix imminent. Sound quality is good, hands free mode works well, and the build quality is very good.

Feature rich phone system at a fraction of the cost of the big name system. Bought 10 for my office. Awesome phone. The only problem is the menu is hard to read and some of the features are not as easy to activate.

Perfetto

Solid construction. Great call quality, especially using g722. Gigabit ethernet is a big plus for piggy-backing a PC. The UI is relatively intuitive. People who've never used a VoIP phone have no trouble with the basics. For the price, this is a feature-packed phone that works very well.

Ce téléphone est vraiment excellent, rapport qualité prix au top. Nous nous en servons à titre professionnel (3 postes acquis) et vraiment très très satisfait !

I run FreePBX in the cloud and have multiple phone number I use. In order to dial out from one of those numbers, I had to dial 9, 8, or some other combination of digits. I decided on the Grandstream GS-GXP2160 because it offers 6 SIP connections, the color display, and some various customization. Once I received the package, I was up and running in minutes. You can configure the phone via the telephone's keypad or via web interface. I opted for the web interface. I set up all 4 of my extensions and say they went green. Calling out was no problem, but I ran into my first hiccup. I couldn't receive calls. I opened up RTP ports 10001-20000 and SIP ports 5060-5061 to the phone. Now I was able to dial out, but from only one extension. I found that each account was assigned every other next available SIP port. Account 1 had 5060, account 2 had 5062, account 3 had 5064, and so on. I extended the range of forwarded SIP ports from 5060-5061 to 5060-5070 and that solved it. I continued setting up the phone and changed the time zone, set some wallpaper, and configured the weather. Getting the weather configured was a bit tricky. You need to look up your self defined city code. To find this you need to head to The Weather Channel and search for your City, State. It cannot be done by zip code. When you load the weather page for your City, State, in the URL there will be a code. For Redlands, CA it is USCA0923. Copy that code and paste it in the phone's configuration and it will instantly update the weather information. To view the forecast, push the first button on the home row left of missed calls. I poked around the other settings to see if there's anything else I needed to configure or customize, but didn't see anything that I needed to change so I called it good. Last night I did get hit with another gotcha. The phone kept ringing and it was from an extension which doesn't exist on my system. Some have called these ghost calls. What is happening is it is a hacker scanning your network and seeing if they can take advantage of any vulnerabilities on your system. I did some reading and found the solution is to enable Check Accept Incoming SIP from Proxy Only under Accounts > Account # > SIP Settings > Security Settings. I also enabled Check SIP User ID for Incoming INVITE. Another solution would to be to use non-standard SIP ports. But after making that change, I haven't received another Ghost Call.

Lo compré principalmente para poder hacer llamadas al extranjero a través de VOIP. El ahorro en costes es significativo, y el aparato tiene todas las funcionalidades necesarias. La configuración es sencilla y dispone de multitud de opciones y teclas que, a no ser que tengas unas necesidades amplias, no aprovecharás al máximo. Esta marca es muy conocida en el sector, y la calidad de este modelo es excelente. Muy muy contento con la compra.