Title:
緊急コールセットアップを条件付きで試みるためのシステムおよび方法
Document Type and Number:
Japanese Patent JP4896866
Kind Code:
B2
Abstract:
A system and method is provided for a communications device to conditionally attempt an emergency call setup. The communications device maintains at least one condition for attempting emergency call setups. Upon receiving a message prompting an emergency call setup, the communications device attempts the emergency call setup only if any of the at least one condition is satisfied. The at least one least condition is defined such that the communications device does not erroneously attempt to establish an emergency call when there is no emergency. The at least one condition might for example include whether the message prompting the emergency call setup indicates a message source that is trusted by the user of the mobile device. A system and method is also provided for a communications network to block at least at least some of the messages from being delivered to their target communications device.
Inventors:
Eniko Sokondar
Application Number:
JP2007341450A
Publication Date:
March 14, 2012
Filing Date:
December 28, 2007
Export Citation:
Assignee:
Research In Motion Limited
International Classes:
H04M1/00; H04W4/90; H04M3/54; H04M11/00; H04M11/04
Domestic Patent References:
| JP2006276093A | ||||
| JP2006287798A | ||||
| JP2006270558A |
Other References:
IP Multimedia Call Control Protocol based on SIP and SDP,3GPP TS 24.229 V5.1.0,2002年 6月,Stage 3 (Release 5),第24頁,URL,http://www.3gpp.org/ftp/Specs/archive/24_series/24.229/24229-510.zip
Attorney, Agent or Firm:
Takeshi Oshio