Development and manufacturing of telecommunication equipment

IP-phone VP-12

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

Business solution
VP-12 has been 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 reception and generation as well as traffic prioritization (QoS) ensure high quality of voice data.

Redundancy
In case of main Softswitch connection failure, VP-12 is switched automatically to a redundant SIP server with main server state control.

Eltex.ACS management system (TR-069)
Auto Configuration system Eltex.ACS, based on TR-069 specification, provides easy-to-use functionality for firmware versions management and phone configuration. Eltex.ACS loads automatically individual configuration to the device  according to the subscriber credentials. Intellectual firmware updating works consistently with the devices on a 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 configuring independently
  • Geographical redundancy of a SIP server (support for up to 4 SIP redundant servers)
  • Flexible dialplan
  • Operation without a SIP server
  • Caller name and number displaying (Caller ID)
  • Mute
  • Redial
  • Different ring-tones for different accounts
  • Call history
  • Local phonebook for 200 phone numbers
  • LDAP Remote Phonebook
  • Speakerphone mode
Value Added services
  • Call Hold 
  • Call Transfer
  • Call Waiting
  • Call Forward on Busy
  • Call Forward on no response
  • Call Forward unconditional
  • Do not Disturb mode (DND)
  • Caller Line Identification Restriction (CLIR)
  • 3 Way-conference
  • Hotline/warmline
Display and indicators 
  • 128х64 Backlit monochrome display
  • Interface language selection (English and Russian)
  • Account registration status indicator
  • Functional keys: message (with light indicator)1, do not disturb,
    transfer, conference, call hold, headset, mute, redial,
    speakerphone, volume + and -
  • Programmable keys2
  • 2 SIP lines keys with status indicators
VoIP protocol
  • SIP
Audio codec support
  • G.711 a-law, µ-law
  • G.723.1
  • G.726
  • G.729 (A/B)
Voice standarts
  • Voice activity detection (VAD)
  • Comfort Noise Generation (CNG)
  • Echo Cancellation, G.165, G.168 (AEC) 
Monitoring and management
  • Management Web interface (Russian and English)
  • SSH
  • Telnet
  • Autoprovision (TR-069, DHCP)
Diagnostics
  • Device status monitoring via the web interface
  • Displaying of debugging information in Syslog, Telnet
Network protocols and security
  • Data network connection: Static, DHCP, PPPoE
  • Time and date synchronization via NTP
  • 802.1p, DSCP traffic marking
  • Support for NAT traversal: STUN mode, Public IP
  • Support for SIP over TLS
  • Support for SRTP
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 16 MB
  • Linux software
  • Software redundancy
Physical features 
  • 2хRJ45 10/100Mbps Ethernet ports
  • 1хRJ9 (4P4C) for handset connection
  • 1хJack 3.5 mm or 1xRJ49 (4P4C) for hands-free connection2
  • Power consumption: no more than 3.5 W (maximum current
  • consumption 0.7 A)
  • Power adapter: 5 VDC, 2A
  • Operating temperature: from +5°С to +40°С
  • Operating relative humidity at +25°С: up to 80%
  • Desktop case
  • Dimensions: 223x178x89,5 mm
  • Weight: no more than 0,52 kg

    1 Not available in firmware version 1.4.0 
    2 Depends on the hardware version