Specifications

1 support ITU H.323V4 and IETF SIPV2.
2 ensure the high quality speech
3 support VLAN and QoS
4 NAT Transversal
5 router

Product Introduction:

The HT-812P VoIP is designed as a compact, high performance, and low cost VoIP Analog Terminal Adapter (FXS Gateway).  It comes with one 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-812P 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

Two FXO ports for PSTN terminations

Speech quality ensured by QoS at the Ethernet and IP layers and comprehensive jitter buffer

Line Echo Cancellation

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

 DTMF: RFC 2833, In

 

 

 

 

 

 

 

 

 

.