Patent ID: 7616752
Filing Date: 2009-11-10
Classification: H04M

Abstract:
1. A method for providing caller ID information and for switching between active and waiting calls using session initiation protocol (SIP), the method comprising: (a) establishing a first call between a first phone and a SIP termination, wherein establishing the first call includes a first media connection between the SIP termination and a media gateway and a second media connection between the media gateway and the first phone; (b) during the first call, receiving signaling for establishing a second call from a second phone to the SIP termination; (c) in response to the signaling, communicating caller ID information for the second phone to the SIP termination; (d) receiving a hook flash from the SIP termination; and (e) in response to the hook flash, connecting the SIP termination and the second phone using the first media connection and a third media connection between the media gateway and the second phone, wherein the first media connection is reused in order to toggle between the first call and the second call.