Honeywell G.m.b.h.

Other

Roderick D Nelson

Tho T Vu

Susan Feit

Jordan M Roderick

Peter C Roberts

A telecommunication network processes a telephone call from a calling party to a called party. The called party uses a wireless telephone that is associated with an MSC and has a MIN. The telecommunication network, responsive to the calling party dialing the MIN, receives the MIN at an originating switch. The network then translates the MIN to an internal routing number and routes the telephone call to a terminating switch based on the internal routing number. The terminating switch is directly connected to the MSC. The network then translates the internal routing number back to the MIN and routes the telephone call to the MSC. After the call is completed, the billing of the called party is suppressed for at least some of the telephone call air time.

Calling party paid wireless telecommunication system

A very high speed, low power integrated interface circuit using GaAs or InP technology is provided for converting small digital voltage swings to larger swings which are particularly suitable for analog control signals. The preferred embodiments employ solely depletion mode MESFETS and Schottky diodes in Schottky diode field effect logic (SDFL) configurations.

GaAs level-shift logic interface circuit

Two MESFETS with the drain of one connected to the source of the other are driven in complementary fashion by a single inverter using a third MESFET and a voltage level shifter, in response to digital signals input to the inverter. Means for selectively disconnecting the power supply from the inverter to place the circuit in a low power, standby mode is provided. Depletion and enhancement mode MESFET configurations of the circuit are disclosed.

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Minneapolis, MN, United States of America

Roderick D Nelson