Patent ID: 8370502
Filing Date: 2013-02-05
Classification: H04L

Abstract:
1. A method for processing a session request in an internet protocol network, comprising: receiving the session request; querying a telephone numbering mapping server for a called party of the session request; determining if a naming authority pointer resource record associated with the called party is received from the telephone numbering mapping server; forwarding the session request to a circuit switched network if the naming authority pointer resource record is not received from the telephone numbering mapping server; determining a session description protocol value of the session request if the naming authority pointer resource record is received from the telephone numbering mapping server, wherein the session description protocol value defines a type of service and is included in the session request; and processing the session request in accordance with the session description protocol value if the naming authority pointer resource record is received from the telephone numbering mapping server, wherein the processing the session request comprises forwarding the session request towards the called party over the internet protocol network if the session description protocol value of the session request is for a service provided over the internet protocol network.