Inventor
PENROD MICHAEL H
US2 patents
Patents
2 patentsUS5712908AJan 27, 1998
Apparatus and method for generating call duration billing records utilizing ISUP messages in the CCS/SS7 telecommunications network
UNISYS CORP257 citations94
US5757895AMay 26, 1998
Extracting and processing data derived from a common channel signalling network
UNISYS CORP115 citations93