(12) United States Patent (10) Patent No.: US 8,599,838 B2 Buckley (45) Date of Patent: Dec
US008599838B2 (12) United States Patent (10) Patent No.: US 8,599,838 B2 Buckley (45) Date of Patent: Dec. 3, 2013 (54) SYSTEMAND METHOD FOR 2004/O137918 A1 7/2004 Varonen et al. EFFECTUATING ASIP CALL INA 2004/O184435 A1 9, 2004 Westman 2004/0203680 A1 10/2004 Sylvain NETWORKENVIRONMENT INCLUDING 2004/0235483 A1 1 1/2004 Sylvain MS 2005/0058.125 A1 3/2005 Mutikainen et al. .......... 370,354 2005/O130657 A1 6/2005 Creamer et al. (75) Inventor: Adrian Buckley, Tracy, CA (US) (Continued) (73) Assignee: BlackBerry Limited, Waterloo (CA) FOREIGN PATENT DOCUMENTS (*) Notice: Subject to any disclaimer, the term of this EP 1811 745 A1 7/2007 patent is extended or adjusted under 35 EP 2367335 9, 2011 U.S.C. 154(b) by 554 days. (Continued) (21) Appl. No.: 12/915,125 OTHER PUBLICATIONS (22) Filed: Oct. 29, 2010 CIPO, Office Action, Application No. 2,605,102, Nov. 21, 2012, 3 pg.S. (65) Prior Publication Data (Continued) US 2011 FOO44325 A1 Feb. 24, 2011 Primary Examiner — Simon Sing Related U.S. Application Data Assistant Examiner — Simon King (63) Continuation of application No. 1 1/347,874, filed on (74) Attorney, Agent, or Firm — The Danamraj Law Group, Feb. 6, 2006, now Pat. No. 7,830,868. P.C. (51) Int. Cl. (57) ABSTRACT H04L 2/66 (2006.01) In one embodiment, a scheme is disclosed for effectuating a (52) U.S. Cl. call in a network environment including a circuit-switched USPC ........ 370/353; 370/354; 370/356; 379/88.17; (CS) network and an IP multimedia subsystem (IMS) net 455/403:455/428 work.
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