Detailed Product Description
1,support ITU H.323V4 and ITEF SIPV2
2,ensure high quality speech
3,support VLAN and QoS
4,NAT Transversal

Product Introduction:

The 4 FXS and 4 PSTN ports SIP VoIP gateway is  designed as a compact, high performance, and low cost VoIP Analog Terminal Adapter (FXS Gateway).  It comes with a FXS port to interface with a traditional analog phone set or a PBX trunk line for VoIP communications. By connecting a PSTN line to the Bypass port, the phone set connected to the FXS port can also access the PSTN line for traditional telephone service. The HT-544 is a full featured FXS gateway and is designed for easy installation and configuration. It is an ideal low cost solution for travelers and SOHO users 

Product Features:

  • Open Standard VoIP Protocols (ITU H.323 V4 and IETF SIP V2)
  • Single or Multiple Server Registrations
  • Two 10/100 Ethernet circuits connect to the LAN and an additional device
  • Speech quality ensured by QoS at the Ethernet and IP layers and comprehensive jitter buffer
  • VLAN and QoS support
  • NAT Transversal and Router functions
  • Voice prompts, HTTP Web, Auto Provision support for configuration and updates
  • Highly stable embedded Linux operating system in high performance ARM 9 Processor
  • Supported Standards:

  • ITU: H.323 V4, H.225, H.235, H.245, H.450
  • RFC 1889 - RTP/RTCP
  • RFC 2327 SDP
  • RFC 2833 RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals
  • RFC 2976 SIP INFO Method
  • RFC 3261 SIP
  • RFC 3264 Offer/Answer model with SDP
  • RFC 3515 SIP REFER Method
  • RFC 3842 A Message Summary and Message Waiting Indicator
  • RFC 3489 Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs)
  • RFC 3891 SIP Replaces Header
  • RFC 3892 SIP Referred-By Mechanism
  • draft-ietf-sipping-cc-transfer-04 Session Initiation Protocol Call Control - Transfer
  • Codec: G.711 (A/µ law), G.729A/B, G.723.1
  • DTMF: RFC 2833, In-band DTMF, SIP INFO .


    FOB Price: FOB USD 120.00~120.01 / Piece
    Minimum Order: 1 Piece/Pieces
    Port: shenzhen
    Payment Terms: L/C,T/T,Western Union

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