• 2.3-inch 128 × 48 pixel dot-matrix display
• 4 SIP Lines; 33 physical keys
• Support audio codec G.722 and Opus, HD audio on speakerphone and handset
• Dual 10/100 Mbps network ports, integrated PoE
• Two installation methods of desktop stand and wall mountable

System parameters

• Operating systemEmbedded Linux operation system
• ROM16 MB
• RAM64 MB

Display parameters

• Screen size2.3-inch
• Operation methodPhysical keys
• TypeDot-matrix display screen
• Resolution128x48

Audio parameters

• Audio compression standard

  Narrowband Codec: G.711a/u, G.723.1, G.726, G.729A/B, iLBC

  Wideband Codec: G.722, Opus

• Audio input

  HD voice microphone;

  HAC handset

• Audio outputHD voice speaker (handset/hands-free, 0 ~ 7KHz frequency response)
• Audio qualityFull-duplex Acoustic Echo Canceller (AEC) / Voice Activity Detection (VAD) / Comfort Noise Generation (CNG) / Background Noise Estimation (BNE) / Noise Reduction (NR) / Automatic Gain Control (AGC)
• Volume adjustmentAdjustable

Capacity

• Communication Lines4 SIP Lines
• Contact capacity

  Local phonebook (1000 entries)

  Remote phonebook (XML/LDAP, 1000 entries)

• Call log capacityIn/Out/Missed, 600 entries

Network parameters

• Communication protocol

  SIP2.0 over UDP/TCP/TLS

  RTP/RTCP/SRTP

  STUN

  DHCP

  IPv6

  LLDP

  PPPoE

  L2TP

  OpenVPN

  SNTP

  FTP/TFTP

  HTTP/HTTPS

  TR-069

  AES128 & AES256

• Wired network10/100 Mbps self-adaptive, dual bridged port for PC bypass
• Wi-Fi standard/

Device interfaces

• Network interface2 RJ-45 10/100 Mbps self-adaptive: Network x1, PC x1 (Bridged to Network)
• Power supply inputDC power input
• Communication interface2 RJ-9 ：handset x1, headset x1

General

• Button33 physical keys, including: 4 Soft-keys; 9 function keys (Hold/Transfer/Voice message/Conference/Phonebook /MWI/Headset/Redial/Hands-free) ; 4 Navigation keys; 1 OK key; 12 Standard Phone Digits keys; 3 Volume Control keys (Up/Down/Mute (Microphone))
• Installation

  Desktop stand

  Wall mounting (optional)

• IndicatorRed: calling and message waiting
• Working temperature0 °C to 45 °C (32 °F to 113 °F)
• Working humidity10% to 95% (no-condensing)
• DimensionsDesktop Stand (45°): 169x203.6x172.7 mm ; Desktop Stand (50°): 169x194x181 mm ; Wall mountable: 169x113.4x207.6 mm
• Power supplyIEEE802.3af, Standard PoE,5 VDC, 0.6 A
• Application environmentIndoor
• Power consumptionPower Consumption(Adapter): 0.8~1.29W Power Consumption(PoE): 1.25~1.86W
• LanguageEnglish, Simplified Chinese, Traditional Chinese, Russian, Italian, French, German. Hebrew, Spanish, Catalan, Basque, Galician, Turkish, Hungarian, Slovenian, Czech, Korean, Dutch, Ukrainian, Portuguese, Polish