Patent · US Active

Call routing

US8335485B2 · kind B2 · utility

2Cited by

4References

20Claims

0Family size

Assignee

Nokia · FI

Inventors

Markku Tuohino · Espoo, FI
Lauri Lahtinen · Espoo, FI

Key dates

Filing date	Jun 11, 2008
Grant date	Dec 18, 2012
Priority date	—
Expiry date	Oct 18, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04M2242/04
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Embodiments provide a method and apparatus wherein a proxy control function may forward an emergency session to a serving control function, the serving control function forwarding the session to a default emergency control function. The default emergency control function may return an address or identity of an emergency control function or may forward the session to an emergency control function.

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