According to one aspect, a system and method of exchanging GRUUs (Globally Routed User Agent URI (Uniform Resource Identifier)) between a first telephony-enabled device and a second telephony enabled device using a circuit-switched message is provided. Once exchanged, the telephony enabled devices can exchange SIP (session initiated protocol) communications routed by the GRUUs. Any one of the telephony-enabled devices can add a media component to the SIP communications. According to another aspect, a system and method of generating GRUUs is provided. According to another aspect, a system and method of handing off communications to a packet switched network from a circuit switched network is provided.

Systems, methods, and computer program products for determining network characteristics are provided. The network characteristics may be used to facilitate changes to how content is delivered over a network, such as to avoid network congestion, to provide improved throughput, or to provide a good (or better) user experience, such as when streaming media. For example, the network characteristics may be determined, in part, by tracking domain name resolution requests by using specially formulated domain names that require resolution at an authoritative name server.

Systems, methods, and computer program products for determining network characteristics are provided. The network characteristics may be used to facilitate changes to how content is delivered over a network, such as to avoid network congestion, to provide improved throughput, or to provide a good (or better) user experience, such as when streaming media. For example, the network characteristics may be determined, in part, by tracking domain name resolution requests by using specially formulated domain names that require resolution at an authoritative name server.

According to one aspect, a system and method of exchanging GRUUs (Globally Routed User Agent URI (Uniform Resource Identifier)) between a first telephony-enabled device and a second telephony enabled device using a circuit-switched message is provided. Once exchanged, the telephony enabled devices can exchange SIP (session initiated protocol) communications routed by the GRUUs. Any one of the telephony-enabled devices can add a media component to the SIP communications. According to another aspect, a system and method of generating GRUUs is provided. According to another aspect, a system and method of handing off communications to a packet switched network from a circuit switched network is provided.

According to one aspect, a system and method of exchanging GRUUs (Globally Routed User Agent URI (Uniform Resource Identifier)) between a first telephony-enabled device and a second telephony enabled device using a circuit-switched message is provided. Once exchanged, the telephony enabled devices can exchange SIP (session initiated protocol) communications routed by the GRUUs. Any one of the telephony-enabled devices can add a media component to the SIP communications. According to another aspect, a system and method of generating GRUUs is provided. According to another aspect, a system and method of handing off communications to a packet switched network from a circuit switched network is provided.

A method for creating a virtual SIP user agent by use of a webRTC enabled web browser comprises a user logging in to a web application server via a webRTC enabled web browser. The web application server uses the logged on user identity to lookup an associated SIP user identity along with a registrar server address and the web application server initiates a SIP registration procedure using its IP address as the registered contact.

A method for creating a virtual SIP user agent by use of a webRTC enabled web browser (200) comprises a user logging in to a web application server (400) via a webRTC enabled web browser (200). The web application server (400) uses the logged on user identity to lookup an associated SIP user identity along with a registrar server address and the web application server (400) initiates a SIP registration procedure using its IP address as the registered contact.

Systems, methods, and computer program products for determining network characteristics are provided. The network characteristics may be used to facilitate changes to how content is delivered over a network, such as to avoid network congestion, to provide improved throughput, or to provide a good (or better) user experience, such as when streaming media. For example, the network characteristics may be determined, in part, by tracking domain name resolution requests by using specially formulated domain names that require resolution at an authoritative name server.

The present invention relates to a session merging entity in a communication system IMS. The merging entity is handling communication of the first user; the communication comprises a first session and a second session. The first session and the second session are merged into a single session towards the second user, if the same IMS communication service identifier has been indicated for the first session and the second session. The merging entity may also be located at the terminal device of the second user.

A method for creating a virtual SIP user agent by use of a webRTC enabled web browser (200) comprises a user logging in to a web application server (400) via a webRTC enabled web browser (200). The web application server (400) uses the logged on user identity to lookup an associated SIP user identity along with a registrar server address and the web application server (400) initiates a SIP registration procedure using its IP address as the registered contact.