Invention Grant
- Patent Title: Method and apparatus for communications between carriers
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Application No.: US15224967Application Date: 2016-08-01
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Publication No.: US10264132B2Publication Date: 2019-04-16
- Inventor: Bernard Ku , Lakshminarashimhan Naidu , James W. Forsyth
- Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.
- Applicant Address: US GA Atlanta
- Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
- Current Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
- Current Assignee Address: US GA Atlanta
- Agency: Guntin & Gust, PLC
- Agent Mark Wilinski
- Main IPC: H04M7/00
- IPC: H04M7/00 ; H04L29/12

Abstract:
Aspects of the subject disclosure may include, for example, responsive to determining that a second device is associated with a first carrier network, obtaining a first record associated with a called number of the second device from a first carrier network telephone number mapping equipment server of the first carrier network, and transmitting a first internet protocol address for the second device from the first record to a terminating call session control function server of the first carrier network to initiate the internet protocol call session. Responsive to a second determination that the second device is associated with a second carrier network, obtaining a second record associated with the called number according to a pointer to a second carrier network telephone number mapping equipment server of the second carrier network, and transmitting a second internet protocol address for the second device derived from the second record to a session border controller of the first carrier network to initiate the internet protocol call session. Other embodiments are disclosed.
Public/Granted literature
- US20180034971A1 METHOD AND APPARATUS FOR COMMUNICATIONS BETWEEN CARRIERS Public/Granted day:2018-02-01
Information query