Voice-over-IP is one of the fastest growing applications on the internet. While it is relatively simple to implement over the internet, VoIP poses several challenges when deployed in a satellite network. The major challenge in VoIP networks is the balance of voice quality and bandwidth consumption. Excellent voice quality can be achieved if no constraints are placed on the bandwidth consumed. However, satellite networks are more efficient if there is some degree on congestion in the network. This means it may be difficult to get consistent, jitter-free bandwidth for voice traffic in a bandwidth on demand basis.

Advantech Satellite Networks offers one of the most efficient Voice-over-IP (VoIP) scheduling systems available in the market today for two-way satellite communications.

SatNet has worked for a number of years developing VoIP applications for the DVB-RCS network. As a result of this experience, SatNet has developed a VoIP solution called SatNet Virtual Telephony™ designed for high priority, jitter-free applications such as voice. This feature guarantees adequate capacity for the voice call is obtained at call setup. Just as important, bandwidth is released back to the network at the end of the call. In summary, this feature emulates the behavior of circuit-switched telephony using standard, packet-switched VoIP technology. Operators benefit from significant improvements in bandwidth efficiency while maintaining voice quality in congested, mixed media networks. In addition, the circuit-switched behavior dramatically simplifies network provisioning analysis.