Patent ID: 8401007

Claim:
A method for determining clock synchronization in an IP connected network having a plurality of members in one or more domains comprising: determining a difference between an arrival time of a received packet and outpulsing of a signal to a digital signal processor, in a window; determining a time to generate a number of samples and a time to receive the number of samples, wherein the number is a window size of the window; accumulating a delta which is used to adjust an interrupt timer and synchronize the clock in at least one member; and sending clock synchronization information over one or more inter-gateway connections (IGC) within the IP connected network to a tandem source, wherein: the tandem source is a member within a domain with an IGC derived clock or sync reference; a slave member has an IGC derived clock or sync reference; a tandem domain has members having an IGC derived clock or sync reference emanating IGC streams to other members; and a master domain has members having a DS1 or BRI or clock sync reference emanating IGC streams to other members.