1 FXS VOIP Gateway (ATA) , Support SIP/H.323, 2*10/100 Base-T Ethernet Ports

Specification:

-built-in SIP server                                          

-Two 10/100 Base

-T Ethernet Ports                  

-NAT                                           

-Radio VOIP GSM Pubilc announce

 IP-Gateway

Model: OFS-VPA1

T(Radio over IP) technology is to convert the audio and PTT signals in a radio terminal into IP packets and then the date via the IP networks. A typical set up is shown as follow:

The challenge in this technology is to insure that the audio is transmitted in real time and the PPT control signal is transmitted immediately and reliably. The radio range is general limited by the restricted transmitting power, the antenna sensitivity, and other environmental factors. The success deployment of this technology extends the coverage of a radio network without using expensive repeaters or links up multiple radio networks in the world.   In addition, this technology can also link up the radio world to the VoIP world and the cellular world easily. It truly makes voice  communications across multiple networks possible.

Benefits of RoIP

• Radio Service Operators who would like to expands their geographical coverage.
• Radio User who would like to make and receive calls from the telephone networks.
• System administrators who would like to monitor and maintain good control over the existing radio networks.
• System Integrator who would like to build or deploy a reliable voice communication network in timely manner.
• 1-year warranty on hardware   

Key Features

• RoIP Series Cross-Network Gateway has 1 (RoIP-102) or 3 (RoIP-302/RoIP-302M) PTT interfaces.
• Support open standard SIP Protocols (IETF SIP V2)
• Support SIP proxy mode
• Multiple RoIPs grouping mode
• Two 10/100 Ethernet ports for the LAN and an additional device
• Guad band GSM module: support GSM 850MHz, 900 MHz, 1800 MHz, 1900MHz
• Speech quality ensured by QoS at LAN, IP layers and comprehensive jitter buffer
• VLAN and QoS support
• NAT Transversal
• Voice prompts, HTTP Web
• Highly stable embedded Linux operating system in high performance ARM 9 Processor

Standards Supported

• 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 (STUN) - Simple Traversal of User
• Datagram Protocol (UDP) Through Network Address Translators (NATs)
• RFC 3892 - SIP Referred-By Mechanism
• Proprietary Firewall-Pass-Through Technology
• Codec: G.711 (A/D law), G.729A/B, G.723.1
• DTMF: RFC 2833, In-band DTMF, SIP INFO
• Web-base Management
• PPP over Ethernet (PPPoE)
• PPP Authentication Protocol (PAP)
• Internet Control Message Protocol (ICMP)
• TFTP Client
• Network Time Protocol (NTP)
• Trivial File Transfer Protocol (TFTP)
• Hyper Text Transfer Protocol (HTTP)
• Terms Of Service ( TOS)
• Dynamic Host Configuration Protocol (DHCP)
• Domain Name System (DNS)
• Dynamic Domain Name Serve (DDNS)
• User account authentication using MD5

Enhanced Features

• LEDs for Power, Ready, Status, WAN, PC, GSM
• Dial in mode or dial out mode only
• Dial Plan
• Dynamic selection of codecs
• Advanced jitter buffer
• Automatic traversal of NAT and firewall
• VLAN / QoS
• Echo cancellation for Speakerphone
• Comfort noise generation (CNG)
• Voice activity detection (VAD)
• Auto provisioning (requires auto provisioning server)
• Firmware upgrade from GUI

Hardware Specifications

• Operating temperature: 10°C to 40°C (50°F to
• 104°F)
• Storage temperature: 0°C to 50°C (32°F to 122°F)
• Weight:
• 350 g (1 lb) (Including AC/DC Adapter) for RoIP-102
• 860 g (3 lb) (Including AC/DC Adapter) for RoIP-302/RoIP-302M
• Power:
• 12 Vdc 500 mA (AC/DC adapter included) for RoIP-102
• 12 Vdc 2000 mA (AC/DC adapter included) for RoIP-302/RoIP-302M
• Regulatory Approval: CE, FCC
• Warranty: 1 years on hardware