New technology breakthroughs in Voice over IP (VoIP) enable NetStar Technologies to offer fully managed service, with a guaranteed quality of service, while delivering lower infrastructure costs than circuit-switched technology. VoIP converts voice conversations (analog signals) into digital packets, just like any other digital media. Once converted, the packaged voice traffic can be transmitted over a managed IP network, where it intermingles with Internet content, e-mails, videos, faxes, etc. NetStar Technologies Satellite Voice Over IP Telephony Service is designed for users in remote locations using high speed satellite Internet service where access to traditional telephone service is not available, and is not specifically designed as a way to save money on long distance. 

NetStar Technologies Satellite Voice Over IP Telephony Service is a hardware-based solution that does not require a PC or any special software. Your telephone works over your high-speed satellite Internet connection just like your phone at home. High speed satellite Internet remote sites can answer regular telephone calls dialed to a standard ten-digit or 800 telephone number. Outbound calls from the remote site can use any selected 1+ long-distance carriers, calling cards or 10-10-XXX access. Both inbound and outbound fax capability is included. The system uses any standard analog telephone and/or fax machine at the remote site - just plug it in and use it like you would on a regular connection. Sound quality is approximately cellular level quality and availability can be further enhanced by adding an inexpensive dedicated satellite voice channel with QoS to your NetStar Technologies broadband satellite connection. Service features:

• U.S., Canadian and European dial tone 
• Global ubiquity without limitations of distance or geography
• Predictable and consistent QOS
• Advanced analog-to-digital-to-analog code
• Instant infrastructure for under-served and large land mass areas
• Emergency and security services, linking voice and data networks
• Flexibility for interim service, scalability and rapid re-provisioning of subscriber lines
• PBX integration at customer headquarters providing local extensions

How It Works

NetStar's satellite telephone system features specially configured VoIP gateways at each end of the connection. At the remote site, telephone jacks located on the remote gateway are connected to a customer-provided telephones or fax machines. The remote gateway is also connected to the satellite Internet service via a standard Ethernet connection.

At the landline end, a host gateway is connected via Ethernet to the customers LAN switch or hub (connected to the Internet via any broadband connection). The host gateway has standard telephone jacks to connect to standard telephone lines. Calls or faxes made to the remote site telephone number will ring through as if the remote site telephone were in the same room as the host gateway. Any calls made from the remote site will be a local call if local to the host gateway telephone line, or they will be placed through the long distance carrier that has been selected for the telephone line.
 

 NetStar Technologies brings to the satellite market carrier class and subscriber Gateways, Gatekeepers, and Gatekeeper software from industry leaders such as Multitech, Quintum Terchnologies, and Lucent Technologies. By utilizing industry standard protocols such as SIP and H.323, NetStar's remote gateways are interoperable with other VoIP products and are designed to seamlessly integrate with customer's existing phones and phone systems. NetStar's remote gateways offer scalability by allowing the flexibility to stack gateways and add ports as you grow. This scalability feature also provides the ability to maintain one IP address and deliver features such as line hunting, caller-id, auto fax detection, and remote programming updates. NetStar's remote gateways feature:

• Bandwidth Management (Prioritization) - The remote gateway sits upstream from the local network, and makes sure that LAN traffic such as FTP, web browsing, email etc. does not interfere with the placing, receiving or conducting of a telephone call.
• Network Address Translation (NAT) - A static public IP address is required at both the remote site and the host site, although the remote gateway functions normally behind a firewall or NAT router and does not need it's own public IP address.
• Digital Signal Processing (DSP) - Special microprocessors designed to execute repetitive math-intensive algorithms, DSPs are 2 -3 times faster than general purpose processors. High quality VoIP requires extreemly fast processing, therefore a hardware based approach using digital signal processing allows a much higher voice quality to be achieved as compared to a system that operates on PC.
• Echo Cancellation - Provides the effective removal of hybrid and acoustic echo inherent within digital voice transmission. Echo Cancellation reduces background noise and removes hybrid and acoustic echo before any transcoder processing. With Echo Cancellation enabled, the overall efficiency of the coding is enhanced, significantly improving the quality of voice.
• Voice Compression - Typical voice telephone calls consume 64 kbps of bandwidth. NetStar's VoIP gateways uses standards based H.323v2/v3/v4 to compress speech to a point where high quality voice can be transmitted using as little as 10 kbps.
• Silence Suppression - NetStar's VoIP gateways add "white noise" during periods of time during a VoIP conversation where no one is speaking, to give the digital call familiar analog charecteristics. It removes the "are you still there?" dead air from the call.
• Call Progress Tone Detection (CPTD) - Call progress tone signals provide information regarding the status or progress of a call to customers and connected equipment. These audible tones are transmitted over the voice path within the frequency limits of the voice band including dial tone, busy tone, audible ringback and reorder tone (fast busy).
• Packet / Jitter Processing - Provides a buffer to resolve inconsistant delivery of IP voice packets to improve the quality of a digital telephone call. SatVox Jitter Control can compensate for up to 15% packet loss.

PBX Option

The landline host gateway can connect to an analog port on the customers PBX if needed. Please contact your PBX vendor if you don't know whether your PBX has an available analog port. The host gateway can be equipped with multiple  FXO and FXS ports.

For more information on NetStar's Satellite Voice Over IP Telephony Services, contact NetStar Technologies Sales at (361) 578-6387.