Method for ensuring adequacy of transmission capacity, terminal employing the method, and software means for implementing the method

An apparatus teminal comprising:

• a controller for processing an algorithm for reducing a number of bits in a voice sample included in a voice packet to be transmitted and using the reduced bits of the voice sample for transmitting header field data in the voice packet in a speech spurt, the apparatus configured to transmit the packet in a digital packet-switched cellular network, the controller configured to determine if the voice packet is located before a certain location in the speech spurt and, if the voice packet is determined to be from before the certain location, then the controller is configured to steal at least one entire voice block for header field data of the voice packet, else, the controller is configured to reduce a number of bits in the voice sample and use the reduced voice sample bits for transmitting the header field data of the voice packet.