Patent ID: 9264452
Filing Date: 2016-02-16
CPC Classification: H04L,H04N

Claim Text:
1. A method for setting up a communication session having more than one media type, the method comprising: receiving, by a first invited device from a network apparatus, a communication session invitation associated with establishing a multimedia communication session between an inviting device and the first invited device facilitated by the network apparatus, the communication session invitation containing an offer with a plurality of media types for the multimedia communication session, wherein the communication session invitation is a SIP INVITE or SIP Re-invite message; and in response to the communication session invitation, sending a response message by the first invited device to the network apparatus, wherein the response message is a SIP 300 (Multiple Choices) response message and includes a Contact header containing a plurality of device addresses, one of the plurality of device addresses being an address of the first invited device, and another of the device addresses being an address of a second invited device; indicating to the network apparatus in an XML body of the SIP 300 response, for each respective device address of said plurality of device addresses, at least one respective media type to be included in a respective SIP INVITE sent to the respective device address, wherein the XML body of the SIP 300 response includes at least an address for a second invited device and identifying at least one corresponding media type of the multimedia communication session to be established at the second invited device in addition to at least one media type to be established at the first invited device as part of the same multimedia communication session with the inviting device; and receiving, by the first invited device from the network apparatus, a second communication session invitation, the second communication session invitation being a SIP INVITE containing an offer with the at least one media type to be established at the first invited device as indicated in the XML body of the SIP 300 response.