Inventor
KHUC MINH DUY
US18 patents
Patents
18 patentsUS7079529B1Jul 18, 2006
Internet routing system
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US5828740AOct 27, 1998
Prepaid calling card external/adjunct database processor
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US6819759B1Nov 16, 2004
System and method for providing personalized and customized services for call center customers waiting in queue
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US6731744B1May 4, 2004
Call processing system and service control point for handling calls to a call center
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US6473505B1Oct 29, 2002
Call processing system for handling calls to a call center
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US6459788B1Oct 1, 2002
Call center resource processor
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US6847708B1Jan 25, 2005
Method and apparatus for validating pre-pay and post-pay communication services using the same integrated database
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US5675635AOct 7, 1997
System and method for conducting poll at a processor associated with the originating switch
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US7043004B1May 9, 2006
Call processing system and service control point for handling calls to a call center
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US6470008B1Oct 22, 2002
Internet routing system
SPRINT COMMUNICATIONS CO45 citations92
US6535727B1Mar 18, 2003
Method and apparatus for providing pre-pay and post-pay communication services using the same integrated
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US7881453B2Feb 1, 2011
Call processing system and service control point for handling calls to a call center
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US7830792B1Nov 9, 2010
Call center communications system for handling calls to a call center
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US6690664B1Feb 10, 2004
Call center communications system for handling calls to a call center
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US6760418B1Jul 6, 2004
Method and apparatus for providing pre-pay and post-pay communication services using a switching system to monitor call duration
SPRINT COMMUNICATIONS CO15 citations81
US6483909B1Nov 19, 2002
System and method for providing service assurance for prepaid telecommunication services
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US6366645B1Apr 2, 2002
System and method for providing service assurance for prepaid telecommunication services
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US7415266B1Aug 19, 2008
Method and apparatus for providing pre-pay and post-pay communication services using the same integrated system
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