09667667 is referenced by 3 patents and cites 5 patents.

A system, server, and method of DTMF detection in a VoIP network.

Title
Calling line/name identification of enterprise subscribers in mobile calls
Application Number
14/624061
Publication Number
9667667 (B2)
Application Date
February 17, 2015
Publication Date
May 30, 2017
Inventor
Patricia Landgren
Plano
TX, US
Lathan Lewis
Dallas
TX, US
Andrew Silver
Frisco
TX, US
Assignee
Tango Networks
TX, US
IPC
H04W 84/16
H04W 80/00
H04W 76/06
H04W 76/04
H04W 40/00
H04W 8/12
H04W 4/20
H04M 7/00
H04L 29/08
H04W 8/26
H04W 40/02
H04W 28/02
H04W 40/30
H04W 92/06
H04W 92/02
H04W 88/16
H04W 76/02
H04W 4/16
H04Q 3/72
H04Q 3/62
H04Q 3/00
H04M 15/00
H04M 3/42
H04L 12/66
H04L 29/06
H04W 40/22
H04L 12/16
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