Number identification circuit
Number portability and services utilizing number range owner...
Number portability using enhanced routing table
Number portability using enhanced routing table
Number portability using isup message option
Number portability with database query
Number translation services matrix
Number translation services matrix
Numbering of video objects and cells
Numeric and text paging with an integral plc modem
Numerical control of sideband energy and modulation...
Numerical control tape preparation machine
Numerical filter for digital data transmission system
Numerical signal switching system
Nxn crossconnect switch using wavelength routers and space...
Nxn optical matrix switch using modified cross-connect of...
Nyblet time switch