Development and manufacturing of telecommunication equipment

IP-phone VP-12

Overview
Specifications
Reviews
  • HD Voice
  • 2 SIP accounts
  • Autoprovision (TR-069, DHCP)
  • Head set connection
  • Big LCD display
VP-12 - up-to-date IP phone with integrated switch, which provides PC and IP phone connection through one physical line. 

Business solution
VP-12 are designed for companies with high quality voice data transmission requirements. The IP phones also provide connection reliability and usability.

High sound quality 
The high performance of VP-12 phone is provided by the hardware based on advanced Realtek chip. All the main audio codecs used in VoIP networks (G.711, G.722, G.723, G.726, G.729) are supported by the VP-12 phone. Echo cancellation, Silence Detector, Comfort Noise Generator, DTMF signals receipt and generation as well as traffic prioritization (QoS) ensure high quality of voice data.

Backup
In case of main Softswitch connection failure, VP-12 are switched automatically to a backup SIP server with main server state control.

Eltex.ACS management system (TR-069)
Auto Configuration system Eltex.ACS, based on TR-069 specification, provides convenient functionality for firmware versions management and phone configuration. Eltex.ACS load automatically individual configuration to the device  according to the subscriber credentials. Intellectual firmware updating function works consistently with  devices in the network, updating device groups according to the settled queue. Eltex.ACS has NorthBound Interface for OSS  integration.

Usability
Convenient key location, intuitive menu and user-friendly management web interface with multilingual support provides usability in corporate telephone networks.

Phone functions
  • 2 SIP accounts independently configured
  • Hold, Mute, Do not Disturb (DND) keys
  • Caller name and number displaying (Caller ID)
  • Mute
  • Call Hold
  • Call Waiting
  • Call Forward
  • Call Transfer
  • Redial
  • Do not Disturb mode (DND)
  • 3 Way-conference
  • Anonymous Call
  • Anonymous Call rejection
  • Different ring-tones for different call types
  • Call History
  • Phone Book for 200 contacts
  • Network Phonebook1
  • Speakerphone mode
  • Date and time settings: by NTP
Physical features
  • 2хRJ45 10/100Mbps Ethernet ports 
  • 1хRJ9 handset connection
  • 1хJack 3.5 mm for hands-free connection
  • Power consumption: no more than 6 W
  • Power adapter: 5 VDC, 1 A
  • Operating temperature: from +5 °С to +40 °С
  • Relative humidity: up to 80%
  • Desktop case
Display and indicators 
  • 128х64 Backlit monochrome display
  • Programmable keys
  • Account registration state indicator 
  • 2 SIP lines keys with state indicators
  • Several languages 
Codec support
  • G.711  a-law, µ-law
  • G.723.1
  • G.726
  • G.729 (A/B)
VoIP protocol
  • SIP
Standarts
  • Voice activity detection (VAD)
  • Comfort Noise Generation (CNG)
  • Echo Cancellation, G.165, G.168 (AEC) 
Monitoring and management
  • Management Web interface (in two languages: Russian and English)
  • Autoprovision (TR-069, DHCP)
  • Login and password encryption in configuration
Network protocols and security
  • Data network connection: Static, DHCP, PPPoE
  • Ethernet ports modes: Bridge, Router
  • IPv4
  • Date and time synchronization through the network
  • Requests to name server
  • QoS
  • Data transmission, alarm and media-stream protocols support
  • Tone signals data transmission
  • NAT-traversal
  • STUN
Specifications
  • RFC 3261 SIP 2.0
  • RFC 3262 SIP PRACK
  • RFC 4566 Session Description Protocol (SDP)
  • RFC 3263 Locating SIP servers for DNS lookup SRV and A records
  • RFC 3264 SDP Offer/Answer Model
  • RFC 3311 SIP Update
  • RFC 3515 SIP REFER
  • RFC 3891 SIP Replaces Header
  • RFC 3892 SIP Referred-By Mechanism
  • RFC 4028 SIP Session Timer
  • RFC 2976 SIP INFO Method
  • RFC 2833 RTP Payload for DTMF Digits, Flash event
  • RFC 3108 Attributes ecan and silenceSupp in SDP
  • RFC 4579 SIP Call Control - Conferencing for User Agents
  • RFC 3361 DHCP Option 120
  • RFC 3550 RTP A Transport Protocol for Real-Time Applications
  • RFC 3611 RTP Control Protocol Extended Reports (RTCP XR)
Technical features 
  • Realtek 8972C processor
  • SDRAM 128 Mb
  • SPI Flash 8 Mb
  • Linux software
    1It is not available in firmware version 1.2.0