Patent · US Active

Properly playing in-band tones before call establishment when performing protocol interworking

US8179916B2 · kind B2 · utility

0Cited by

2References

14Claims

0Family size

Assignee

Cisco Technology, Inc. · US

Inventors

Vijay Kannan · Savanuru, IN
Sandeep Kohli · Ambala, IN
Paul E. Jones · Apex, US

Key dates

Filing date	Oct 29, 2007
Grant date	May 15, 2012
Priority date	—
Expiry date	Feb 12, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04M7/129
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

In one embodiment, interworking procedures between H.323 and SIP ensure that in-band tones and announcements, along with local and remote ringback, are properly played or generated.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.