Patent ID: 7301953

Claim:
A method of operating a primary communication system to provide a communication service to a secondary communication system, the method comprising: in a first adaptor assembly, receiving a primary communication signal from the primary communication network, wherein the primary communication signal has primary overhead and a primary payload; in the first adaptor assembly, receiving a secondary communication signal from first equipment in the secondary communication network, wherein the secondary communication signal has secondary overhead and a secondary payload; in the first adaptor assembly, locating unused space in the primary overhead, inserting the secondary overhead into the unused space in the primary overhead to form transport overhead, combining the primary payload and the secondary payload to form a transport payload, and combining the transport overhead and the transport payload to form a transport communication signal; transferring the transport communication signal from the first adaptor assembly to a second adaptor assembly; in the second adaptor assembly, removing the secondary overhead and the secondary payload from the transport communication signal and combining the secondary overhead and the secondary payload to form the secondary communication signal; and transferring the secondary communication signal from the second adaptor assembly to second equipment in the secondary communication network.