Grandstream DP750 Long-Range DECT Base Station + DP720 DECT Cordless HD Handset

We changed our internet provider from cable to T-Mobile Home Internet that now uses T-Mobile/Sprint cell towers rather than traditional cable. My speed now is over 300mbps but the problem then was to find an alternative for my cable Voip phone system? The answer was the Grandstream base station and cordless headset. This now works to perfection with the T-Mobile wireless base station having super clear digital hearing and very few dropped or problem calls.

All is good, arrived on time Feb 8

Great product & fast shipping

I bought this phone so my husband and I could talk with a caller at the same time or we could pick it up in one location and my husband could then pick up on the other phone. Neither is possible . It rings in both locations but you can only talk from the location where you picked up. It is next to worthless for our needs. You can actually use it as two separate phones.

This is an IP phone which means no static, wrong volume, or random touch tone noises like you get with a regular cordless phone paired with an ATA. Other advantages of IP phones include immediate display of caller ID instead of between the first and second rings, instant call initiation after dialing, a voicemail blinking light, multiple call handling, multiple account registration, and support for wideband voice quality.Other people reverted to their terrible sounding cellphones when given only desk phones, so it had to be cordless. Cordless also means it's easier to deploy where Cat6 wiring needed for desk phones is not present. The base station can be powered with either 802.3af or AC adapter. Very useful if you want to leverage an existing UPS backed PoE infrastructure to ride out blackouts or want to ceiling mount it for better coverage. Handsets charge off cradles or you can use the micro USB port on their bottoms.Opus codec is supported which is more bandwidth efficient and tolerant of packet loss than G.722 (like all CAT-iq phones it transmits G.722 over the air, so some quality loss results from transcoding G.722 to Opus and vice versa). Speakerphone function is full duplex to allow natural conversation flow. Finally it uses standard LSD NiMH AAA batteries instead of a custom NiMH pack or lithium polymer battery. No more throwing away a phone because the battery pack wore out and replacement parts approach the cost of a whole new unit!Pairing the handset to the base was straightforward, as was typing in my VoIP account credentials. Voice quality is great. Not better than a Polycom but this is half the cost of their DECT solution. You need to correct the firmware update server URL, otherwise clicking the check firmware update button is useless. There appears to be a day light savings time bug if you enable DHCP option 2 support instead of manually selecting a time zone. Otherwise I have no complaints.

Great Range and Sound.The sound quality is perfect. I've got two handsets on the base. They all work fine in a large house. Programming them with a Grandstream 1602 wasn't hard.Downside is that they don't have the same functions as a IP phone, and programming them is a little different.Also the batteries go down in a day off the charger, so you need to leave them charging. I haven't tested how long the batteries last when off hook and talking.The screens are nice and readable if small. The handsets themselves are small and light.

Liked that it is cordless. Less stuff.

It is working well but it took forever to arrive.