US2005286542A1PendingUtilityA1

Interface call signaling protocol

43
Individually held — no corporate assignee on recordPriority: Dec 18, 2003Filed: Aug 25, 2005Published: Dec 29, 2005
Est. expiryDec 18, 2023(expired)· nominal 20-yr term from priority
Inventors:William N. ShoresBarbara DesutterThomas HallinEdward J. NeyensRobert J. Thomas
H04L 65/1101H04L 65/1104H04W 8/26H04W 80/10H04W 4/10H04W 76/45H04W 88/16H04W 4/18H04L 65/103H04L 65/104
43
PatentIndex Score
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Cited by
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References
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Claims

Abstract

A third generation (3G) gateway ( 30 ) provides the facilities for extending a number of internet protocols ( 40, 64, 74, 83, 100, 110, 120 and 130 ) between a second generation (2G) network and a 3G network. The various messages of a session initiation protocol (SIP) are extended to provide user identification and server identification subfields ( 42 ). The SIP message extensions facilitate the communication of 2G and 3G networks for the purposes of implementing push-to-talk and dispatch service features.

Claims

exact text as granted — not AI-modified
1 . An interface call signaling protocol for a communication system, using an internet protocol (IP), the interface call signaling protocol comprising: 
 an INVITE request field;    the INVITE request field including: 
 a user identification extension having direct routing information;  
 a server identification extension having a network address; and  
 a subscriber data base flag for indicating a table access is performed.  
   
   
   
       2 . The interface call signaling protocol as claimed in  claim 1 , wherein there is further included: 
 a from header field including: 
 a user identification extension having direct routing information; and  
 a server identification extension having a network address.  
   
   
   
       3 . The interface call signaling protocol as claimed in  claim 1 , wherein there is further included: 
 a to header field including: 
 a user identification extension having direct routing information; and  
 a server identification extension having a network address.  
   
   
   
       4 . The interface call signaling protocol as claimed in  claim 1 , wherein there is further included: 
 a contact header field including: 
 a user identification extension having direct routing information;  
 a server identification extension having a network address; and  
 a cache flag for saving the user identification.  
   
   
   
       5 . The interface call signaling protocol as claimed in  claim 1 , wherein there is further included: 
 a user agent field including: 
 a product extension indicating a “voice signaling gateway”; and  
 a product version extension.  
   
   
   
       6 . The interface call signaling protocol as claimed in  claim 1 , wherein there is further included a content type header field including a media type extension representing a 2G gateway.  
   
   
       7 . The interface call signaling protocol as claimed in  claim 1 , wherein there is further included a message body field including a call processing type media type extension representing a 2G gateway.  
   
   
       8 . The interface call signaling protocol as claimed in  claim 1 , wherein: 
 the internet protocol includes session initiation protocol (SIP): and    the INVITE request field is a SIP INVITE request.    
   
   
       9 . The interface call signaling protocol as claimed in  claim 1 , wherein for the internet protocol of a session description protocol when a message body indicates a multi-part message, there is further included an attribute extension for a session description protocol.  
   
   
       10 . The interface call signaling protocol as claimed in  claim 1 , wherein there is further included: 
 a via header field;    a maximum forwards header field;    a call identification header field;    a Cseq header; and    a content length header.    
   
   
       11 . A interface call signaling protocol for a communication system using an internet protocol (IP), the interface call signaling protocol comprising: 
 a from header field;    the from header field including: 
 a user identification extension having direct routing information; and  
 a server identification extension having a network address.  
   
   
   
       12 . The interface call signaling protocol as claimed in  claim 11 , wherein there is further included a to header field including: 
 a user identification extension having direct routing information; and    a server identification extension having a network address.    
   
   
       13 . The interface call signaling protocol as claimed in  claim 11 , wherein there is further included a contact header field including a range extension for routing information.  
   
   
       14 . The interface call signaling protocol as claimed in  claim 11 , wherein: 
 the internet protocol includes session initiation protocol (SIP): and    the INVITE response field is a SIP 301 INVITE response.    
   
   
       15 . The interface call signaling protocol as claimed in  claim 11 , wherein there is further included: 
 a via head field;    a call identification header field;    a Cseq header field; and    a content length header field.    
   
   
       16 . An interface call signaling protocol for a communication system, using an internet protocol (IP), the interface call signaling protocol comprising: 
 an INVITE response field:    a from header field including: 
 a user identification extension having direct routing information; and  
 a server identification extension having a network address.  
   
   
   
       17 . The interface call signaling protocol as claimed in  claim 16 , wherein there is further included a to header field including: 
 a user identification extension having direct routing information; and 
 a server identification extension having a network address.  
   
   
   
       18 . The interface call signaling protocol as claimed in  claim 16 , wherein there is further included a contact header field including: 
 a user identification extension having direct routing information;    a server identification extension having a network address; and    a subscriber data base flag for indicating a table access is performed.    
   
   
       19 . The interface call signaling protocol as claimed in  claim 16 , wherein: 
 the internet protocol includes session initiation protocol (SIP): and    the INVITE response field includes a SIP 302 INVITE response.    
   
   
       20 . The interface call signaling protocol as claimed in  claim 16 , wherein there is further included: 
 a via header field;    a call identification header field;    a Cseq header field; and    a content length header field.    
   
   
       21 . An interface call signaling protocol for a communication system, using an internet protocol (IP), the interface call signaling protocol comprising: 
 an INVITE response field;    a from header field including: 
 a user identification extension having direct routing information; and  
 a server identification extension having a network address.  
   
   
   
       22 . The interface call signaling protocol as claimed in  claim 21 , wherein there is further included: 
 a to header field including: 
 a user identification extension having direct routing information; and  
 a server identification extension having a network address.  
   
   
   
       23 . The interface call signaling protocol as claimed in  claim 21 , wherein there is further included: 
 a contact header field including: 
 a user identification extension having direct routing information;  
 a server identification extension having a network address; and  
 a cache flag for saving the user identification.  
   
   
   
       24 . The interface call signaling protocol as claimed in  claim 21 , wherein there is further included a server header field including a product extension and a product version extension for interfacing purposes.  
   
   
       25 . The interface call signaling protocol as claimed in  claim 21 , wherein for the internet protocol of a session description protocol when a message body indicates a session description message, there is further included an attribute extension for a session description protocol.  
   
   
       26 . The interface call signaling protocol as claimed in  claim 21 , wherein: 
 the internet protocol includes session initiation protocol (SIP): and    the INVITE response field is a SIP 200 INVITE response.    
   
   
       27 . The interface call signaling protocol as claimed in  claim 21 , wherein there is further included: 
 a via header field;    a call identification header field;    a Cseq header field;    a content type header field; and    a content length header field.    
   
   
       28 . An interface call signaling protocol for a communication system, using an internet protocol (IP), the interface call signaling protocol comprising: 
 an INVITE response field;    a from header field including: 
 a user identification extension having direct routing information; and  
 a server identification extension having a network address.  
   
   
   
       29 . The interface call signaling protocol as claimed in  claim 28 , wherein there is further included: 
 a from header field including: 
 a user identification extension having direct routing information; and  
 a server identification extension having a network address.  
   
   
   
       30 . The interface call signaling protocol as claimed in  claim 28  wherein there is further included: 
 a reason header field including: 
 a protocol extension;  
 a cause extension; and  
 a text extension.  
   
   
   
       31 . The interface call signaling protocol as claimed in  claim 28 , wherein: 
 the internet protocol includes session initiation protocol (SIP): and    the INVITE response field is a SIP 4XX-6XX INVITE response.    
   
   
       32 . The interface call signaling protocol as claimed in  claim 28 , wherein there is further included: 
 a via header field;    a call identification header field;    a Cseq header field; and    a content length header field.    
   
   
       33 . An interface call signaling protocol for a communication system, using an internet protocol (IP), the interface call signaling protocol comprising: 
 an ACK request field;    a from header field including: 
 a user identification extension having direct routing information; and  
 a server identification extension having a network address.  
   
   
   
       34 . The interface call signaling protocol as claimed in  claim 33 , wherein there is further included: 
 a to header field including: 
 a user identification extension having direct routing information; and  
 a server identification extension having a network address.  
   
   
   
       35 . The interface call signaling protocol as claimed in  claim 33 , wherein: 
 the internet protocol includes session initiation protocol (SIP): and    the ACK request field is a SIP ACK request.    
   
   
       36 . The interface call signaling protocol as claimed in  claim 33 , wherein there is further included: 
 a via header field;    a maximum forwards header field;    a call identification header field;    a Cseq header field;    a content type header field; and    a content length header field.    
   
   
       37 . The interface call signaling protocol as claimed in  claim 33 , wherein for the internet protocol of a session description protocol when a message body indicates a session description message, there is further included an attribute extension for a session description protocol.  
   
   
       38 . An interface call signaling protocol for a communication system, using an internet protocol (IP), the interface call signaling protocol comprising: 
 a message body for identifying a 2G gateway; and    a talker arbitration extension representing a plurality of parameters.    
   
   
       39 . The interface call signaling protocol as claimed in  claim 38 , wherein there is further included: 
 an information request extension; and    a content type header field including an arbitration type extension.    
   
   
       40 . The interface call signaling protocol as claimed in  claim 38 , wherein there is further included: 
 a from header field including: 
 a user identification extension having direct routing information; and  
 a server identification extension having a network address.  
   
   
   
       41 . The interface call signaling protocol as claimed in  claim 38 , wherein there is further included: 
 a to header field including: 
 a user identification extension having direct routing information; and  
 a server identification extension having a network address.  
   
   
   
       42 . The interface call signaling protocol as claimed in  claim 39 , wherein: 
 the internet protocol includes session initiation protocol (SIP): and    the information request extension includes a SIP INFO request.    
   
   
       43 . The interface call signaling protocol as claimed in  claim 38 , wherein there is further included: 
 a via header field;    a maximum forwards header field;    a call identification header field;    a Cseq header field; and    a content length header field.    
   
   
       44 . An interface call signaling protocol for a communication system, using an internet protocol (IP), the interface call signaling protocol comprising: 
 a BYE request field; and    a gateway call processing message body field including a call duration extension.    
   
   
       45 . The interface call signaling protocol as claimed in  claim 44 , wherein there is further included: 
 a from header field including: 
 a user identification extension having direct routing information; and  
 a server identification extension having a network address.  
   
   
   
       46 . The interface call signaling protocol as claimed in  claim 44 , wherein there is further included: 
 a to header field including: 
 a user identification extension having direct routing information; and  
 a server identification extension having a network address.  
   
   
   
       47 . The interface call signaling protocol as claimed in  claim 44 , wherein there is further included: 
 a reason header field including: 
 a protocol extension;  
 a cause extension; and  
 a text extension.  
   
   
   
       48 . The interface call signaling protocol as claimed in  claim 44 , wherein there is further included a content type header field including a media type extension.  
   
   
       49 . The interface call signaling protocol as claimed in  claim 44 , wherein there is further included: 
 a via header field;    a maximum forwards header field;    a call identification header field;    a Cseq header field; and    a content length header field.    
   
   
       50 . The interface call signaling protocol as claimed in  claim 44 , wherein: 
 the internet protocol includes session initiation protocol (SIP): and    the BYE request field is a SIP BYE request.

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