With Usage Measurement (e.g., Call Or Traffic Register) Patents (Class 379/111)
- Redundant processor or backup processor (Class 379/112.02)
- Estimating blocking probability (Class 379/112.03)
- Threshold or limiting control (e.g., gapping control) (Class 379/112.04)
- Optimization network configuration (Class 379/112.05)
- Generalized statistics about telephone network usage (Class 379/112.06)
- Least cost (Class 379/114.02)
- Billing computing software or program (Class 379/114.03)
- Charge error detection (Class 379/114.04)
- Special service fees (e.g., customized feature) (Class 379/114.05)
- Variable rate (Class 379/114.06)
- Incentive billing (Class 379/114.1)
- Fraud detection or control (Class 379/114.14)
- Calling card (Class 379/114.15)
- Redirect billing (Class 379/114.21)
- Portable number billing (Class 379/114.27)
- Advanced intelligent billing network (e.g., a billing service control processor) (Class 379/114.28)
- Interexchange billing operation (Class 379/115.01)
- Of station on polystation or party line (Class 379/117)
- Hardcopy record generating (e.g., ticket printing) (Class 379/119)
- At local exchange carrier (e.g., central switching office) (Class 379/121.01)
- At subscriber station (Class 379/130)