A wireless cellular telephone with an audio codec for converting digital audio signals to analog audio signals. The audio codec comprises two digital audio bus interfaces for coupling to respective digital audio buses, and a digital-only signal path between the two digital audio bus interfaces, such that no analog processing of the audio signals occurs in the digital-only signal path.

A system and method to implement a scheduling algorithm in a communication network using time division multiple access (TDMA) are described. The system includes a plurality of devices, each device transmitting a packet of data in the communication network, and a memory device to store the scheduling algorithm. The system also includes a processor to execute the scheduling algorithm to form a deterministic packet scheduling scheme, the deterministic packet scheduling scheme being based on a base unit representing a minimum among maximum packet intervals corresponding to the plurality of devices in the communication network.