Patent ID: 8761155

Claim:
A method comprising: propagating at least one route for at least one digital stream between a first location server suitable for managing locations of clients of a first IP telephony domain and a second location server suitable for managing locations of clients of a second IP telephony domain, which is distinct from said first IP telephony domain, wherein the first and second location servers reside on a telephony domain service layer, said first location server belonging to a first autonomous system and said second location server belonging to a second autonomous system, which is distinct from said first autonomous system, wherein the first and second autonomous systems reside on an IP transport layer, which is distinct from the telephony domain service layer, said propagating comprising: a step of sending digital stream routing update messages on said telephony domain service layer, from said first location server to said second location server, wherein said update messages contain information for managing quality of service, which comprises the following: information about a quality of service component associated with at least one autonomous system on the IP transport layer, referred to as a system component; and information about a quality of service component associated with at least one IP telephony domain on the telephony domain service layer, referred to as a telephony domain component; and prior to being propagated towards said second location server, said first location server updates the information for managing quality of service to include further information about: quality of service relating to the first IP telephony domain on the telephony domain service layer; and quality of service relating to the first autonomous system on the IP transport layer.