Back to results
US 6,674,843 B1Granted
Apparatus system and method for enabling multi-frequency communication over a telephone network having a billing/tax tone
AssigneeCisco Technology, Inc.
InventorRonald E. Ham
Life of this patent
Estimating the term…
Abstract
An apparatus, system, and method for enabling multi-frequency communication over a telephone network having a billing/tax tone are disclosed. The apparatus comprises a connection port operable to couple to a telephone network. An output port is coupled to the input port, and is operable to couple to a high frequency device. A trap is coupled between the connection port and the output port. The trap is tuned to isolate the high frequency device from the telephone network at a specified frequency range.
Claims23
An apparatus for enabling multi-frequency communication, comprising:
- a connection port operable to couple to a telephone network;
- an output port coupled to the connection port, the output port operable to couple to a high frequency device;
- and
- a trap coupled between the connection port and the output port, the trap tuned to isolate the high frequency device from the telephone network at a specified frequency range, and wherein the trap is operable to isolate the high frequency device from the telephone network such that attenuation of an input signal in the specified frequency range is less than 3 dB.
1 more element
Dependencies are inferred from the claim text.