VOIP/GSM Gateway, buy voip gateway 2 fxo on China Suppliers Mobile

Product Details

Specifications

Network interface setup wizard for DHCP, PPPoE, or fixed IP network environment Auto configuration support (Plug-n-Play)

OFS-VPA4/VPA8 series ATA

The OFS-VPA4/VPA8 is designed as a compact, high performance, and low cost VoIP Analog Terminal Adaptor (FXS Gateway). It comes with 4/8 FXS ports to interface with traditional analog phone sets or PBX trunk lines for VoIP calls. The HT-842R/882 is a full featured FXS gateway and is designed for easy installation and configuration. It supports the two most widely used Open VoIP Standards (SIP and H.323). This allows the HT-842R/882 to interoperate seamlessly with soft switches or IP PBXs made by various vendors. Its high performance offers toll quality voice, flexible networking, and feature-rich call functions. It is an ideal low cost solution for SME environment where multiple lines are required.

Advanced System Features

Network interface setup wizard for DHCP, PPPoE, or fixed IP network environment
Auto configuration support (Plug-n-Play) in encrypted or plain-text format
Smart firmware management support (no need for manual firmware upgrade)
Compatibility in multi-vendor open architecture VoIP networks
Dynamic DNS (DDNS) support
NTP and redundant DNS servers support
QOS (TOS, Diff-Serve, 802.1p/q VLAN)
NAT/Firmware traversal support with session border controller or STUN server
Multi-language support

Standards Supported

Open system SIP VoIP architecture for seamless integration into multi-vendor VoIP networks
Standards include : H.323 V4.0, SIP 2.0, TCP/UDP/IP, RTP/ RTCP, HTTP, ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP, MD5 authentication, TOS, Diff-Serve, VLAN
CODECs: G.711(a-law/u-law), G.729A/B, G.723

In-band/Out-band (RFC-2833/SIP INFO) DTMF dialing

Key Features