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.

This phone is awesome! I decided to go off on a limb one day and built a phone system using FreePBX for my office. I looked around at phones for a while, took a look at Cisco because they're so common in other offices, and even took a look at some Android desk phones. For the price I couldn't find anything that had so much value as the Grandstream. The color screen is nice, (though the view angle could be a bit better), and there are a lot of buttons you can program etc.It has an adjustable stand, and it also wall-mountable!Probably what I love most is that this phone has Bluetooth. I can hook up my little Plantronics headset up and pace around the office and get things done while I'm on the phone.Since I bought this phone, I also bought one of the lower models that has a smaller screen and less buttons, but it works great as well!

Product came in excellent condition. No issue with product or box.

Phone worked flawlessly until I attempted to use the speaker phone. A very loud hum is transmitted making it useless. I am going to have to return it for a refund. Semi-cheaply made. I have used the ATA's in the past and they have worked flawlessly. I am not impressed with this GXP2160. A total waste of time and money now that I am going to have to return it since the speaker phone has the loud hum. You take it off the speakerphone and the call is clear as expected only the hum is there when you use the speakerphone.

Purchased this to replace one of our voip phones and it worked perfect great sound quality and ease install

I've installed more than a hundred of the GXP2160's and 2140's in the last couple of years. My SIP phone of choice for using with FreePBX and PBXact. Very easy to configure.

As a VOIP (voice over IP ) guy, I've used & installed hundreds of phones. The Grandstream GXP series are among my favorite, due to the ease of setup, generally good audio and build quality, as well as the price point for the features included.Let's begin with a few of the "plusses" for this phone.First, it's got up to 6 line capability, out of the box. AND a massive amount of control points, which can be configured individually as speed dial, BLF, specific functions - like direct transfer, etc), and the functionality is tremendous as a result. you can configure BLFs (an LED lights on it to let you know if your associate or colleague is on their phone, so you can harrass them when they get on or off), you can add a zillion speed-dials, and generally, you can do most anything you want with it, just shy of hiring help...The audio is generally crisp and clear - on par or better than many phones at 2x's the price point. The huge color display has several page options (you can get stock reports, localized weather, you can insert your own .jpg backgrounds, etc), so it looks great on a corporate desk..The setup is pretty intuitive, and I can generally have one up and running out of the box within 60-90 seconds, assuming I know the credentials and have a computer handy (don't try to configure this phone without a computer on the same network - you'll spend forever!).. The web GUI for configuration is pretty straightforward, and rather similar to all the GXP series.The phone also sports dual gigabit ethernet jacks - so you can loop thru it to your PC, and you won't face a major performance hit! rather nice.That said, here's what I don't like about it.1. my BIGGEST gripe is the headset jack. I've gone thru DOZENS of headsets, and have yet to find a single headphone which works with this device. I'm unsure if it was intentional, but it appears that either the gain structure is way off, or they've wired the RJ9 in a non-normal configuration. The GUI offers a switch for "Plantronics" headsets, but that doesn't help either. In fact, the only way I've ever gotten a headset to work was to plug it in the handset jack. This of course produces other erratic results, but the headset DOES actually work in that jack. IF you need a headset (wired headset), I'd skip this phone, for that very reason. (I'll update this if I ever get better results on this)....2. the phone book. Face it, unless you played an extra in Office Space, you really should not be using a phonebook directory on a single-use device like this. you should have your computer programed to dial your number for you, or you should be having them punched in as speed dials. The phonebook is ludicrous, and made even more so by the fact that Grandstream wastes several buttons for it.3. the button layout.. there are three "hot buttons" - the handset, headset, and speakerphone. But they're NOT layed out together.. kinda dumb. minor annoyance, but let's just say, dumb....4 the handset cable spot. Another trivial but poorly engineered idea. Of course if nobody complains about it, Grandstream will never make it better.. but basically, they route the cable from under the phone, so it's quite often getting stuck under the edge and as a result, is causing the phone to tilt... pretty annoying, especially as something that could've been prevented.....All-in-all, it's not a bad phone.. and for the price (

Perfetto

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 !

returned it. As I couldn't connect Vonage

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.

Ich habe mittlerweile meherer GXP2160 zusammen mit einer UCM6202 im Einsatz und alles funktioniert hervorragend. Besonders gut gelungen finde ich die BLF Funktion, die kommt visuell sehr gut rüber und das Farbdisplay ist auch ganz hübsch.