METHOD AND APPARATUS FOR COMMUNICATION BETWEEN SESSION INITIATION PROTOCOL BASED NETWORKS AND LEGACY NETWORKS
First Claim
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1. A method at a gateway between a first network and a second network of passing a message between the first network and the second network, the method comprising:
- receiving a message from the first network;
adding a first Via header information to the message indicative of an address associated with the gateway;
adding a second Via header information to the message indicative of an address associated with the first network; and
forwarding the message from the gateway to the second network.
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Abstract
A method and apparatus for passing a message at a gateway between a first network and second network. A message is received from the first network. Header information is added to the message indicative of an address associated with the gateway. Header information is added to the message indicative of an address associated with the first network. The message is forwarded from the gateway to the second network.
39 Citations
20 Claims
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1. A method at a gateway between a first network and a second network of passing a message between the first network and the second network, the method comprising:
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receiving a message from the first network; adding a first Via header information to the message indicative of an address associated with the gateway; adding a second Via header information to the message indicative of an address associated with the first network; and forwarding the message from the gateway to the second network. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method at a gateway between a first network and a second network of passing a message between the first network and the second network, the second network being a legacy network, the method comprising
receiving a message at a first network; -
adding a first service route information to the message indicative of an address associated with the gateway; adding a second service route information to the message indicative of an address associated with the first network; forwarding the message from the gateway to the first network; pursuant to forwarding the message, receiving a second message at the gateway from the second network; obtaining service route information from the second message indicative of the address associated with the first network; and forwarding the second message to the first network using the address associated with the first network. - View Dependent Claims (8, 9, 10)
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11. A method of adapting a session initiation protocol (SIP) network for interaction with a legacy network having a legacy architecture, the method comprising:
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receiving a first message from the legacy network at the gateway; adding a first header to a first SIP message for the first message received from the legacy network, the first header including first header information providing an address associated with the gateway; adding second header information to the first SIP message, the second header information providing an address associated with the legacy network; and forwarding the first SIP message to the first network. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A system for passing messages between a first, legacy network and a second, session initiation protocol (SIP) network providing at least one stateless proxy, the system comprising:
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a first network connection for interacting with the first, legacy network; a second network connection for interacting with the second, SIP network; a gateway for passing messages between the first network via the first network connection and the second network via the second network connection; wherein a message received from the first network at the gateway is passed to the second network as an SIP request that comprises header information identifying the gateway and header information identifying at least one address associated with the first network. - View Dependent Claims (18, 19, 20)
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Specification