公开(公告)号：US2073983A

公开(公告)日：1937-03-16

申请号：US61190832

申请日：1932-05-17

Applicant: AMERICAN TELEPHONE & TELEGRAPH

Inventor： ANDERSON EMIL N

IPC: H04M3/12

CPC classification number: H04M3/12 ,  Y10T74/1503

公开(公告)号：US2040219A

公开(公告)日：1936-05-12

申请号：US1117635

申请日：1935-03-14

Applicant: AMERICAN TELEPHONE & TELEGRAPH

Inventor： KASSON SWART LELAND

IPC: H04M3/12

CPC classification number: H04M3/12

公开(公告)号：US2001831A

公开(公告)日：1935-05-21

申请号：US61190732

申请日：1932-05-17

Applicant: AMERICAN TELEPHONE & TELEGRAPH

Inventor： ANDERSON EMIL N

IPC: H04M3/12

CPC classification number: H04M3/12

公开(公告)号：US1897533A

公开(公告)日：1933-02-14

申请号：US51762331

申请日：1931-02-21

Applicant: AMERICAN TELEPHONE & TELEGRAPH

Inventor： RICHEY CHARLES V

IPC: H04M3/12

CPC classification number: H04M3/12

公开(公告)号：US1841197A

公开(公告)日：1932-01-12

申请号：US52566431

申请日：1931-03-27

Applicant: BELL TELEPHONE LABOR INC

Inventor： MASSONNEAU ROBERT F ,  ROBERTS THOMAS H

IPC: H04M3/12

CPC classification number: H04M3/12

公开(公告)号：US1412574A

公开(公告)日：1922-04-11

申请号：US40795820

申请日：1920-09-03

Applicant: WESTERN ELECTRIC CO

Inventor： DONAT RICHARD CHARLES

IPC: H04M3/12

CPC classification number: H04M3/12

公开(公告)号：US1251644A

公开(公告)日：1918-01-01

申请号：US13956516

申请日：1916-12-29

Applicant: WESTERN ELECTRIC CO

Inventor： CLAUSEN HENRY P

CPC classification number: H04M3/12

公开(公告)号：US1084012A

公开(公告)日：1914-01-13

申请号：US1912714663

申请日：1912-08-12

Applicant: HINZPETER ALFRED

Inventor： HINZPETER ALFRED

CPC classification number: H04M3/12

公开(公告)号：US511875A

公开(公告)日：1894-01-02

申请号：US511875D

CPC classification number: H04M3/12

公开(公告)号：US20180167503A1

公开(公告)日：2018-06-14

申请号：US15808650

申请日：2017-11-09

Applicant: COMCAST CABLE COMMUNICATIONS, LLC

Inventor： Arvind Kaushal ,  Jon Boone ,  Brett Sherman

IPC: H04M3/42 ,  H04L29/06 ,  H04W76/50 ,  H04W76/18 ,  H04W4/90 ,  H04M3/12 ,  H04M3/22

CPC classification number: H04M3/42187 ,  H04L65/1006 ,  H04L65/1066 ,  H04L65/1069 ,  H04L65/40 ,  H04M3/12 ,  H04M3/2218 ,  H04M2242/04 ,  H04W4/90 ,  H04W76/18 ,  H04W76/50

Abstract: Aspects of the disclosure relate to routing of an emergency communication under fault conditions. Routing can be implemented in a packet-switching (PS) network that provides voice service. For a network node of the PS network, availability to route the emergency communication through a specific emergency service routing number (ESRN) can be determined and, in response to the network node being unavailable, administrative data associated with the ESRN can be accessed. In addition, an identifier associated with the administrative data can be updated (e.g., created or modified) with data indicative of the device that originated the emergency communication. The administrative data and the resulting identifier can be delivered to a second network node that can route the emergency communication to an emergency service network.