• Supports up to 500 users, up to 80 concurrent calls, 50 conference attendees;
• Integrated 2*FXS and 2*FXO;
• 5GHz ARM Quad-core processor, 2GB DDR RAM, 16GB EMMC Flash;
• Supports up to a limitless-level IVR (Interactive Voice Response);
• Built-in call recording server; recordings accessed via web user interface;
• Supports call queue for efficient call volume management;
• Built-in Call Detail Records (CDR) for tracking phone usage by line, date, etc.;
• Supports voicemail and fax forwarding to email;
• Integrated LDAP and XML phonebooks, flexible dial plan;
• Zero configuration provisioning of Mainstream SIP endpoints;
• Highest level of security protection using SRTP, TLS and HTTPS encryption;
• Hi-speed network ports with Integrated NAT router and built-in firewall;
• Multi-language auto-attendant to efficiently handle incoming calls.

• Interfaces
  Analog Telephone FXS Ports                     2 ports 
  PSTN Line FXO Ports                                  2 ports 
  Network Interfaces                                      Dual 10/100 RJ45 ports
  NAT Router                                                        +
  Peripheral Ports                                            USB, TFcard
  LED Indicators                                               Power/Ready, Network, PSTN Line, USB, TF
  Reset Switch                                                      +

  Voice/Video Capabilities
  Voice-over-Packet Capabilities                   LEC with NLP Packetized Voice Protocol Unit, 32~128ms-tail-length carrier grade Line Echo Cancellation, Dynamic Jitter Buffer
  Voice and Fax Codecs                                  G.711 A-law/U-law, G.722, G.723.1 5.3K/6.3K, G.726, G.729A/B, GSM, AAL2-G.726-32; T.38
  Video Codecs                                                 H.264, H.263, H263+
  QoS                                                                  Multiple Layers

  Signaling & Control
  DTMF Methods                                              In Audio, RFC2833, and SIP INFO
  Provisioning Protocol & Plug-and-Play      TFTP/HTTP/HTTPS, auto-discovery & auto-provisioning of various IP endpoints with no Configuration
  Network Protocols                                        TCP/UDP/IP, RTP/RTCP, ICMP, ARP, DNS, DDNS, DHCP, NTP, TFTP, SSH, HTTP/HTTPS, PPPoE, SIP(RFC3261), STUN, SRTP, TLS, LADP
  Disconnect Methods                                    Call Progress Tone, Polarity Reversal, Hook Flash Timing, Loop Current Disconnect, Busy Tone

  Security
  Media Encryption                                           SRTP, TLS, HTTPS, TELNET with Fail2ban, Whitelist, Blacklist, alerts   and more to protect against attacks

  Physical
  Dual Power Supply                                         Output: 12VDC, 2A; Input: 100 – 240VAC, 50 – 60Hz
  Dimensions                                                      L x W x H: 440mm x 202mm x 44mm
  Weight                                                               2,52 kg
  Environmental                                                 Operating: 32 – 113ºF / 0 – 45ºC, 8 – 90% (non-condensing); Storage: -4 – 185ºF / -20 – 85ºC
  
  

  Additional Features

  Multi-Language Support                                 English/Chinese/Traditional Chinese for Web UI; Customizable IVR/voice prompts for English, Chinese, British English;
                                                                              Customizable language pack to support any other languages
  Caller ID                                                             Bellcore/Telcordia, ETSI-FSK, ETSI-DTMF
  Polarity Reversal/Wink                                    Yes, with enable/disable option upon call establishment and termination
  Call Center                                                         Multiple configurable call queues, automatic call distribution (ACD) based on agent skills/availability/ busy level, in-queue announcement
  Customizable Auto Attendant                        Unlimited layers of IVR (Interactive Voice Response)
  Maximum Call Capacity                                  Up to 80 even in SRTP encrypted
  Conference Bridges                                         Up to 50 simultaneous PSTN or IP participants
  Call Features                                                     Call park, call forward, call transfer, DND, ring/hunt group, paging/intercom etc.

Datasheet