Patent ID: 7548725

Claim:
A demonstration telecommunication system for use with a PSTN operating in a first format, a telecommunication network utilizing a satellite-based bearer system to communicate with the PSTN when in normal operation, the demonstration telecommunication system allowing the telecommunication network operating in a second format to communicate with the PSTN, wherein the first format is different than the second format, the demonstration telecommunication system comprising: a null bearer system including a PSTN interface for the PSTN and a telecommunication network interface for the telecommunication network, the null bearer system communicating in the first format at the PSTN interface and in the second format at the telecommunication network interface, the null bearer system translating information between the first format and the second format, wherein the null bearer system simulates the satellite-based bearer system used in normal operation of the telecommunication network to translate the information between the first format and the second format.