GXP1620 Small to Medium Business HD IP Phone VoIP Phone and Device

I've been using CISCO IP phones for more than 15 years in my office and got absolutely no problem with them. But Grandstream at this pricing was a much cheaper option. I found the Grandstream phone to be much sleek and as efficient. It was much much more easier to configure as compared to Cisco. We have decided to slowly replace all our phones with this brand. Even the seller was very supportive.

Good Product. But too much costly. And facing some hang issue some time.

Its more than a month the device is in use. I use it with Asterisk. Configuration was easy and took less than 5 minutes to get it up and running. Definitely recommended.

Really working good ,nice product fo office lines

Excellent IP phone, as good as the Avaya IP phones that cost 10 times more. After having horrible experiences with snom and audiocodes IP phones, I was wary of buying this. But I am glad I got it.

Recomended

Did all settings, customer service did not help, only inbounds work, outbound not going. Waste of time and money

I am using this for my BSNL Wings account and it working like a charm. Took around 30 minutes to setup and upgrade firmware and all. Working without any problem.

i got the product with missing item

Einwandfreie Ware, gute Verarbeitung, macht was es soll.

This is a "Basic" IP phone, per the vendor, and that's reflected in the price point. If you expect the device to be on-par with a high-end Cisco or Avaya phone you may be disappointed. However if you want a quality, economical phone with a good feature set then this is a good choice. I found it to be easy to configure, I had it set up in my Asterisk server in under 10 minutes. I was also pleased to see it natively supports OpenVPN, I was able to set up a off-site phone to connect in over VPN without needing to deploy a remove VPN client. It also has support for a LDAP phone book and central configuration, but I haven't had time to set that up. The biggest things I don't like are the screen is a bit basic, I've noticed sometimes incoming caller ID is truncated. Better than it looking like a flip-phone UI circa 2001 though. An administrative concern is that it is hard to manually update the firmware on this. The firmware is openly available from Grandstream, which is nice, but there's no option to just upload the new bin file to it. It needs to be set up to a provisioning server, which is just a HTTP server, and the error feedback is pretty much non-existent. Plan to run a syslog and provisioning HTTP server for these alongside your PBX. Overall I am pleased with it. Audio quality is good. I have a Grandstream Budgetone I bought circa 2007 that's still kicking and it feels like the build quality had improved since then, so I'm optimistic this will last.

Funciona muy bien, telefonía VoIP

Excelente terminal relacion calidad precio. Dos cuentas SIP y una interface web bastante buena. Compatible con openVPN y muchas herramientas para personalizarlo. La calidad de audio en manos libres es muy buena.