Patent ID: 6625171
Filing Date: 2003-09-23
Classification: H04L

Abstract:
A device for monitoring a cell assembly time of a packet multiplexing circuit which multiplexes and maps a plurality of packets received via a packet receiving circuit and each consisting of a header and user information to thereby assemble a cell having a fixed length for providing a variable-speed service, said cell being sent via a packet transmitting circuit, said device comprising:a timepiece for feeding a cell assembly start time based on a value occurring when a packet is input to the packet multiplexing circuit for the first time and a reference time of said device; an information storage for storing, connection by connection, connection control information defined on a protocol layer basis and set between same layers for indicating a relation between terminals to communicate with each other; and a monitoring circuit for monitoring, based on said connection control information, the cell assembly start time and the reference time, a time for ending packet multiplexing connection by connection, and causing said packet multiplexing circuit to execute processing in accordance with a result of monitoring.