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NAT Transversal PPTP VPN VoIP FXS Gateway Protocol SIP & H.323
Quick detail:
Brand name: DBL Model Number:HT-842R type: VoIP FXS Gateway Ports: 4 Color: black Protocol: SIP & H.323 Support: P2P calls, VPN. NAT TransversalDescription:
The 4-line FXS gateway is designed as a compact ,high performance and cost-efficient VoIP Analog Termianl Adapter. The HT-842R is a full featured FXS Gateway and is designed for easy installation and configuration.It comes with one Ethernet port for network access to a VoIP Server and Four RJ-11 jack to interface with a traditional telephone or fax machine. Connecting a telephone line port (FXO) of a traditional PBX to a VoIP ATA enables the PBX to take full advantages of VoIP services. Its high performance offers toll quality voice,flexible networking feature-rich call functions.It is an ideal solution for SME, SOHO, and individual who would like to lower or eliminate their local and long distance call charges.
Key Features
Standard SIP VoIP Protocols (ITU H.323 V4 and IETF SIP V2)
Codec: G.711 (A/µ law), G.729A/B, G.723.1
Point-to-point protocol over Ethernet (PPPoE);
Hypertext Transfer Protocol (HTTP);
Dynamic Host Configuration Protocol (DHCP);
Domain Name System (DNS);
DTMF: RFC 2833, In-band DTMF, SIP INFO
Dynamic selection of codec
Flexible jitter buffer
Automatic traversal of NAT and firewall
VLAN / QoS
Comfort noise generation (CNG)
Voice activity detection (VAD)
Auto provisioning (requires auto provisioning server)
Password protection for both GSM dial in or dial out
Basic Function
PLC: Packet loss concealment
Voice gain adjustable
Echo Cancellation (with ITU-T G.168/165 standard)
Hotline
Memory Dial
Caller ID
Dial Plan
Online firmware upgrade
Multi-language support: English and Chinese
With Accounting Function
Applications:
1.
P2P Calls
Specifications:
|
Hardware |
Parameters |
Remark |
|
Model |
HT-842R |
|
|
Processor |
ARM9 300MHZ |
|
|
DSP |
ARM926EJ DSP(media sub system) |
|
|
RAM |
16M |
|
|
FLASH |
4M |
|
|
Network Card |
100/10BASE-T ×2 |
|
|
LED |
operating and circuit light |
|
|
Power consumption |
24V/DC |
|
|
Net Weight |
0.24kg |
|
|
Operating Temperature |
0－45℃ |
|
|
Working Humidity |
40％－90％ non-condensation |
|
|
Color |
grey |
|
|
RJ11 port |
4 |
|
|
Speech Characteristics |
Service Condition |
Remark |
|
G.168 Echo cancellation |
support |
16mS |
|
g.723 |
support |
|
|
g.711A/u |
support |
|
|
g.729A/B |
support |
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