HT702/704 is next generation, powerful 2/4-port IP ATA (analog telephone adapter) for residential users and small businesses. Their compact size, superb voice quality, rich functionalities, strong security protection, excellent manageability and auto provisioning, as well as unrivaled affordability enable service providers to offer high quality IP voice service at extremely competitive price. The HT702 and HT704 are ideal 2/4-port ATAs for large scale commercial IP voice service deployment.
2 FXS port (HT702) or 4 FXS port (HT704), supporting 3 REN and single 10/100M Ethernet port
LEDs for power, Internet, LINK/ACT, and phone status
Support comprehensive voice code’s including G.711 with Annex I/II, G.723.1, G.729A/B, G.726, iLBC
Advanced telephony features including caller ID, call waiting, 3-way conference, transfer, forward, do not disturb, message waiting indication, multi-language voice prompt, T.38 fax and flexible dial plan
The price is good. The quality is OK. You get what you paid for.
The first unit stopped working several times and required power off / on. The second unit doesn't have this problem.
The voice quality is good most of the time, but breaks occasionally. *87 blind transfer doesn't work. Contacted the manufacturer, and they just repeated what's in the manual, which I told them doesn't work.
The output voltage of the power adapter is barely over 12 v when power off, and drops below 12v when power on. I guess the manufacturer would recommend 220v to keep above 12 v.
If I'm not mistaken, the network cable is Copper Clad Aluminum, which is a recipe for failure.
I ended up with a Obi202 purchased elsewhere, more features, reliable, with good voice quality, pure copper cable, almost double the price of HT702 though. Hope it's available from HomeDepot.