Key features 
Office PBX functionality
High-quality sound
Current and voltage port protection
Measurement of subscriber line physical parameters
The maximum length of line – 6 km 
Multiport Access VoIP-gateways TAU series   are designed and suitable for voice and  facsimile information  transmission via the IP-network.  Gateways provide customers with  high-quality  Telephone Communications with Value Added Services Support: call-forward, call waiting,  3-way conference, pick up, group call,  call line identification presentation etc.
 
High quality Voice
High performance hardware platform based on Mindspeed modern chipset,  support  of all basic  audio codecs  used in  VoIP-networks   (G.711, G.723.1, G.726,   G.729),   echo elimination functions,  silence detector,  comfort noise generator,  DTMF signal reception and generation,  as well as  traffic prioritization mechanism  (QoS)  provide  high quality of voice data.
 
IMS Ready
Support of IMS extensions allows using TAU with different IMS platforms. 
 
Ease of use
The user-friendly control interface as well as supporting means of group-type automated control on the basis of TR-069 and DHCP (DHCP-autoprovision)   protocols  ensure  subscriber's line physical parameters  measurement capabilities  and ease of using unlimited number of TAU gateways on the operator's network. 
Supports capability to measure following subscriber's line parameters :
extraneous voltage on the wires  a and b
subscriber's line  voltage
ringing voltage
resistance between wires a and b,  cable a and ground, cable b and ground
capacitance between wires a and b,  cable a and ground, cable b and ground
Eltex.EMS management system
For gateways mass exploitation on network Eltex offers unified monitoring and control system  Eltex.EMS. The system provides gateways group centralized management with the ability of ports monitoring via unified web-interface.