Patent ID: 8457105
Filing Date: 2013-06-04
Classification: H04L

Abstract:
1. A method comprising: propagating at least one route for at least one digital stream between a first location server suitable for managing the locations of clients of a first IP telephony domain and a second location server suitable for managing the locations of clients, said first location server belonging to a first of a plurality of autonomous systems, each autonomous system managing a set of IP resources by a single administrative entity, the route being for transferring said at least one digital stream, wherein the propagating comprises: receiving a first route update message, said first route update message comprising: if the second location server is situated in the first IP telephony domain, propagating the first route update message to the second location server without modifying the list of identifiers of the autonomous systems through which the first route update message has passed; and if the second location server is situated in a second, different IP telephony domain, adding an identifier of the first autonomous system to the list of identifiers of the autonomous systems through which the first route update message has passed; and propagating the first route update message to the second location server.