THOMAS WRIGHT JOHNSON
Pilots at Oak Tree Rd, Westminster, MD

4718074, Jan 5, 1988

Mar 25, 1986

6/843668

Earl L. Mannas - Laurel MD
Thomas H. Johnson - Westminster MD

SOTAS, Inc. - VA

H04L 700

375118

Dejitterizer apparatus is disclosed which uses a counter to track the number of bits stored in a 64-bit FIFO buffer. The counter is incremented on a falling edge of pulses of a timing pulse signal, nominally 6. 176 Mhz, that coincides with a pulse of a jittered, nominally 1. 554 Mhz, clock pulse signal derived from a jittered T1 signal applied to the input of the apparatus. The counter is decremented on the rising edge of pulses of a local clock pulse signal which is derived from the timing pulse signal. The bits are stored in the buffer in response to pulses of the jittered clock pulse signal. Output from the buffer in response to timing pulses derived from the local clock pulse signal is enabled when the counter indicates that the buffer is one-half full. The frequency of the local clock pulse signal is a function of the average frequency of the jittered clock pulse signal over more than sixteen jittered clock periods.

5241584, Aug 31, 1993

Aug 22, 1990

7/570778

William C. Hardy - Alexandria VA
Thomas H. Johnson - Westminster MD

MCI Communications Corporation - Washington DC

H04M 322, H04M 164

379 67

The present invention automatically initiates a telephone call to a given destination. At the same time, the progress of the call is monitored. The time of a ring back and voice answer received from the destination are recorded to an output file. At the end of the voice answer, a pre-recorded voice message is sent by the system to the person answering at the destination. Thereafter, the recorded data is used to determine the response time for that particular telephone destination. A plurality of destinations can be tested.