Grandstream DP750 DECT VoIP Base

I was a little skeptical of this system at first due to the price difference between it and other similar products. However for the price I figured i’d give it a try. I just got it today and set it up with my FreePBX system without too much fuss. As others have mentioned you have to change the firmware url to firmware.grandstream.com. Once thats done it downloaded and updated my base station and handset.

I created a new extension in FreePBX and pointed the Base station to FreePBX with the appropriate credentials and everything came up beautifully. My wife is super happy now that she isnt tethered to an old Polycom I ordered on ebay.

One thing that took me a while to find was that the settings were not saving correctly on the Web GUI while using Chrome. I had to switch to Edge to get the settings to save. It took me two hours of trying to configure this thing and finally I found someone in a forum mentioning having to use a different browser. Had I known about the browser issue I would have had this thing configured in under 15 minutes

Ein Firmware-Update brachte endlich Untertützung von DECT-Telefonen von dritten Herstellern. Zumindest Gigaset. Nachdem dieser enttäuschende und inakzeptable Sachverhalt behoben wurde, werde einen von deren Routern eine Chance geben. Was noch fehlt ist das hosten von SIP-accounts aus registrierten SIP-Profilen als Weiterleitung.

Great quality and works great. Glad that it doesn’t freeze up like my old phone system which had to be restarted every few days.

I got 2 DP720’s and the DP750 to connect to a local Asterisk (w/FreePBX) server and it works fine. I created an extension in Asterisk and pointed the DP750 to that extension and viola! The firmware updating of the DP750 was a little funky. I had to do change the “Firmware Server Path” to “firmware.grandstream.com” and save and reboot. Then, sometime later I was clicking around and it went unresponsive, since I guess it downloaded the firmware finally. Anyway, once it updated, both handsets upgraded, one after another. So far, I love it.

Ottimo prodotto. Svolge egregiamente le funzioni per cui è costruito.
Sostanzialmente destinato ad una installazione a cura di persone qualificate.

I’ve had five DP750’s at 5 different restaurants with 3 handsets in place for about 2 months now. If I could I would return them, but unfortunately I spent too much time trying to make them work and it’s too late to send them back.

The price is definitely a big plus. Roughly $50 for the base unit and $50 for each handset, buy what you need as you need it. The feature set seems kind of basic. For example there’s no way to disable the missed calls notification or to lock the handset settings down. For the price, I’m willing to accept that.

Haven’t had any issues with the sound quality or build quality. Perfectly fine all around.

Have had ongoing problems with them crashing, and STAYING crashed. I could tolerate the occasional crash if some sort of watchdog service rebooted the device. Instead, the DP750 crashes, calls stop coming in, and an hour or three later the restaurant calls asking me to see what’s wrong. That means orders missed and money lost.

At the end of the day it doesn’t matter how good or cheap or whatever something is if it doesn’t work reliably. And these don’t. Truly wish I could get a refund and buy another brand. My first and last Grandstream adventure. I wouldn’t chance buying the brand again.

Update: It’s now a year later. We’ve begun replacing them with 

Yealink – W60P – Dect Base and Handset Package

 I put in smart plugs to reboot them every morning. That cut down the number of crashes during business hours to one or two a month. Yay. Still crashing. Grandstream doesn’t seem to care. What bugs me is that otherwise no problems. And at about $50 per handset, replacing them when they went swimming in the sauce or the sink or the wash bucket (seriously, they did) was bearable. Ring tones could have been better and louder. Still wish we could have disabled missed calls and locked the settings down. But the core functions and quality were fine…except for the crashing. I don’t understand why Grandstream never addressed it. But I say with certainty that I’ll never buy the brand again. At least not their cheaper devices. I’ve been told the pricey stuff is great. Except that if it’s going into the sauce, I want the cheap stuff. That works.