Abstract: An activity toy with a body including a hollow cylindrical portions supported on a base and having pivotally mounted arms has a hollow upper member including a skull with extrusion openings. The bottom of the upper member has a loading opening for a plastic amorphous solid substance. Attachable about and spaced from the skull is a clear plastic mask formed of separable halves clamped together at the bottom by the engagement of hooks and tabs and at the top by a detachable hairpiece. Near the bottom, the mask is maintained in a relatively tight relation to a flange on the hollow upper member. The upper member with the mask attached is secured to the body by a bayonet lock. Within the body is a piston with diametrically opposed gear racks that are engaged by gear segments on arms pivotally mounted to the body.

Abstract: A 4 KHz channel is used for communication between a processing unit associated with a satellite telephone office and a processing unit associated with a connected class 5 telephone office. A data link circuit is connected to the processing unit of the satellite office and operates to transmit data communications between the processing unit of the satellite office and the class 5 telephone office via the 4 KHz channel.

Abstract: Signals from line circuits requesting service are transferred to a T1 channel via a Pulse Amplitude Modulated (PAM) bus. The number of line circuits which can be served by a T1 line is not limited by the capacity of the T1 line since the probability of all line circuits requesting service at the same time is extremely low. A processing unit detects requests for service and assigns them a slot in a memory which defines the scanning sequence for insertion of line circuit signals in the T1 channel.

Abstract: A conference arrangement for use in a pulse code modulated system including first and second control memories and a comparison logic circuit. Two words corresponding to two channels are read from information memory during each time slot and after proper comparison, the largest sample is transmitted to a third channel. Also included is a dial tone source for supplying dial tone to all terminations in the system by writing a time slot number assigned to the dial tone source and the respective ones of the channel memory words in the control memory associated with the channels.