Competitive Features:
SIP protocol
For consumer or family use
1 FXS port, 1 FXO port
Ethernet ports: TWO* 10/100 Base-T Ethernet ports,
Bridge/Router functionFunctions: Out route selection(use VoIP or PSTN),

Auto provisioning, auto new version check, auto upgrade

Functions: Caller ID transfer(VoIP and PSTN),Volume adjust, auto answer(with /without authentication)
SIP features: Call hold/Retrieve, Call waiting, Call transfer, 3-way calling, G.711 fax, MWI, Do Not Disturb, Call forwarding: Busy, No answer, Unconditional, T.38 FAX

Impedance: optional
Size:108* 72*26 (L *W *H)

KTA2110(O) is a 1FXS,1FXO ata, equipped with Bridge & Router function, it could create a VPN (Virtual Private Network) connecting several computers in your family to the internet.
Additionally, it has a FXO port which can access to PSTN line at the same time. You can shift freely between PSTN mode and VoIP one. What's more, when power lost, it can shift to PSTN mode automatically. And the FXO port can provide you auto answer and other functions.
----in our promotion time, the whole sale price for 100~1000 pcs is only USD42