Method and apparatus for enhanced internet telephony
First Claim
1. An internet telephony system comprising an internet telephony server configured to process a SIP signaling message to setup a communication of streaming packets with a media terminal adapter on a first network, the internet telephony server being on a second network and further configured to replace a first network address of the media terminal adapter in one or more fields of the SIP signaling message with a second network address to accommodate the first and second networks being separated by a router performing network address translation between corresponding network addresses on the first and second networks, wherein the second network address was received from the router.
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Abstract
A method and apparatus for enhanced Internet telephony ensures that communication between a source and destination is not interrupted by common network address translation. According to one aspect of the invention, communication may continue through a router that employs network address translation.
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Citations
21 Claims
- 1. An internet telephony system comprising an internet telephony server configured to process a SIP signaling message to setup a communication of streaming packets with a media terminal adapter on a first network, the internet telephony server being on a second network and further configured to replace a first network address of the media terminal adapter in one or more fields of the SIP signaling message with a second network address to accommodate the first and second networks being separated by a router performing network address translation between corresponding network addresses on the first and second networks, wherein the second network address was received from the router.
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10. A method of providing internet telephony comprising:
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receiving at an internet telephony server on a second network a Session Initiation Protocol (SIP) signaling message for setting up a communication of streaming packets with a media terminal adapter on a first network; replacing a network address of the media terminal adapter in one or more fields of the SIP signaling message with a different network address to accommodate the first and second networks being separated by a router performing network address translation between corresponding network addresses on the first and second networks, wherein the different network address is received from the router. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 20)
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21. An internet system comprising:
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an internet telephony server configured to receive and process a SIP signaling message to setup a communication of streaming packets with a media terminal adapter on a first network, the internet telephony server being on a second network and further configured to replace a first network address of the media terminal adapter in one or more fields of the SIP signaling message with a second network address; and
,a NAT router separating the first network from the second network and configured to provide the second network address to the internet telephony server via the SIP signaling message.
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Specification