Cisco Technology, Inc.

Paul R Chu

Parameswaran Kumarasamy

Mohammed Taher Shaikh

In one embodiment, a first message for a video call is received from a first end point. The first end point may be communicating using a first protocol, such as H.323. The first message is for a second end point that communicates using a second protocol, such as SIP. The first message may be an early offer in SIP to start a video call. The first message includes media information that is needed to initiate the video call. The media information is stored and may be later used to initiate the video call with the second end point. The stored media information is mapped to one or more messages that are sent to the second end point to initiate the video call using a slow start initiation procedure in H.323.

Session initiation protocol (SIP)-H.323 video interwork

A network device has a H.323 interface to communicate under a H.323 standard of the International Telecommunications Union. The device also has a Session Initiation Protocol (SIP) interface. A processor converts signaling messages between H.323 and Session Initiation Protocol to establish a fax session for communication of packetized fax signals and data.

H.323 to SIP fax interworking

Techniques for determining media statistics for a communication from a first device to a second device are provided. The techniques include receiving media traffic for the communication at a network device configured to receive the media traffic from the first device. The network device is also configured to transmit the media traffic to the second device. A copy of the received media traffic is also forked to a processor. The received media traffic is sent to the second device while the forked copy of the media traffic is analyzed at the processor to generate media statistics about the media traffic.

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Saratoga, CA, United States of America

Paul R Chu