Methods and systems to communicate media data across different networks

A method to communicate information between different networks, comprising:

• determining, with a processor, whether a second network device in a second network has a communication capability associated with a first descriptor in a first private session initiation protocol header field of a first data packet from a first network device in a first network based on a comparison of
• the first descriptor and a second descriptor in a second private session initiation protocol header field of a second data packet, the second descriptor indicative of whether the second network device has the communication capability with the first network device;
• and
• when the second network device has the communication capability based on a match between the first descriptor and the second descriptor, receiving, via the second network device, data from a communication source that bypasses the first network device and communicates the data to the second network device.

An apparatus comprising:

• a data field reader to identify a first data packet having a first descriptor in a first private session initiation protocol header field of the first data packet from a first network device in a first network, and to determine whether a second network device in a second network has a matching capability associated with the first descriptor;
• a data field writer to store a second descriptor in a second private session initiation protocol header field of a second data packet, the second descriptor indicative of whether the second network device has the matching capability;
• and
• a media data network interface to communicate the second descriptor to the first network device via the second data packet, and when the second network device has the capability based on a match between the first descriptor and the second descriptor, to receive data from a communication source that bypasses the first network device and communicates the data to the second network device.