| 摘要 |
Methods and apparatus are disclosed for processing Session Initiation Protocol (SIP) INVITE messages that include an early media capability indicator. The early media capability indicator provides information regarding the early media handling capabilities of the device originating the message, and is used by various network nodes that process the INVITE message to determine if, and under what circumstances, early media sessions may be established with the originating communication device. In an exemplary method, a SIP INVITE message is received from a SIP User Agent Client for a first communication device, the SIP INVITE message comprising an early media capability indicator. The exemplary method further comprises forwarding the SIP INVITE message to one or more remote communication devices, and selectively allowing one or more media sessions between the first communication device and the one or more remote communication devices, based on the early media capability indicator.
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