Invention Grant
- Patent Title: System and method for conveying end-to-end call status
- Patent Title (中): 用于传送端到端通话状态的系统和方法
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Application No.: US14287874Application Date: 2014-05-27
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Publication No.: US09100416B2Publication Date: 2015-08-04
- Inventor: James Jackson , Mehrad Yasrebi , Philip Cunetto
- Applicant: AT&T Intellectual Property I, LP
- Applicant Address: US GA Atlanta
- Assignee: AT&T INTELLECTUAL PROPERTY I, LP
- Current Assignee: AT&T INTELLECTUAL PROPERTY I, LP
- Current Assignee Address: US GA Atlanta
- Agency: Guntin & Gust, PLC
- Agent Ralph Trementozzi
- Main IPC: H04L29/06
- IPC: H04L29/06 ; H04M3/533 ; H04M7/12 ; H04L12/58 ; H04L12/66 ; H04M1/65 ; H04M3/424

Abstract:
A system that incorporates teachings of the present disclosure may include, for example, receiving a session initiation protocol (SIP) subscribe message over a primary call leg requesting outdial event notification on a secondary call leg. Receiving of the call is responsive to a unified messaging system placing a call outside of its local access and transport area. A call is placed on the secondary call leg responsive to receiving outdial information on the primary call leg. Alternative outdial information directed to the calling party is received responsive to the call on the secondary leg being unanswered. Another call is placed on the secondary leg responsive to receiving the alternative outdial information without requiring receipt of another SIP subscribe message over the primary call leg. A calling card server performs SIP messaging associated with one of the SIP notify message or the SIP subscribe message. Other embodiments are disclosed.
Public/Granted literature
- US20140254587A1 System and Method for Conveying End-to-End Call Status Public/Granted day:2014-09-11
Information query