VoIP Gateway TAU-36.IP

VoIP Gateway TAU-36.IP

  • PBX functionality
  • High quality Voice
  • Current and voltage port protection
  • Enables to provide testing measurement of line 
  • Characteristics
  • Maximum length of line – 6 km 
Multiport Access VoIP Gateway TAU-36.IP   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.

VoIP protocols

  • SIP
  • SIP-T
  • H.323
  • H.248

Voice codecs

  • G.729 (A, B)
  • G.711 (a-law, µ-law)
  • G.723.1 (6,3/5,3 Cbps)
  • G.726

Fax support

  • T.38 UDP Real-Time Fax
  • G.711 (a-law, µ-law) pass-through

Voice standards

  • VAD (Voice Activity Detection)
  • CNG (Comfort Noise Generation)
  • AEC (echo cancellation, G.168  recommendation)

Functional features

  • SIP-server authentication with common username and password for all subscribers
  • SIP-server authentication with individual username and password for every subscriber
  • Direct routing to unregistered devices on SIP-servers
  • Internal connections commutation in case connection with SIP-server loss
  • Supplementary self- service processing  (Distributed mini PBX mode)
  • Regular expressions in  Dialplan
  • Concurrent connections  limitation
  • CPC (Calling Party Control): disconnect signal  by circuit disruption
  • Signal generation handset  un hooked
  • Supplementary  service management  with telephone
  • Settings using without rebooting
  • IMS (3GPP TS 24.623) Call Hold, Call Waiting, 3-Way Conference, Hotline services management
  • Redundant SIP-servers support
  • DHCP option 82 generation, Agent client circuit suboptions ID, Agent remote ID

Quality of Service (QoS)

  • 4 priority queues
  • Packages  distribution  for queues on the basis of 802.1p priority and/or DSCP
  • Diffserv and   802.1р  priority assignment for  for packets SIP и RTP

Value Added Services

  • Caller ID
  • Caller name and time of call identification in FSK mode
  • Calling Line Identification Restriction
  • Call Transfer
  • Call Pick-Up
  • 3-way conference
  • Hotline/Warmline
  • Call Waiting
  • Redirection (CFU, CFB, CFNR, CFOOS)
  • Call Group
  • Call Hold
  • Music on hold
  • Message-waiting indicator (MWI)

Network Functions

  • 802.1Q support
  • SNTP support
  • Local and  external DNS
  • Ability to use different VLAN for indication, RTP and management
  • STP support
  • LLDP support
  • Redundancy  support  (dual homing)

Types of connections

  • Static IP-address
  • DHCP-client
  • PPPoE-client


  • TFTP (software and configuration auto-update)
  • Telnet, SSH, Console port RS-232
  • SIP settings configuration by SNMP
  • Eltex.EMS management system
  • WEB-interface

Remote monitoring

  • SNMP
  • TR-06


  • Syslog
  • Subscriber’s line physical parameters  testing


  • Ports detailed statistics
  • Call history


  • Username and password verification
  • Access rights delimitation: admin / user
  • Сonfiguration file encryption