| 摘要 |
A telephone system including mobile telephonic stations provides for a remote programming of the telephones of respective ones of the mobile stations upon an indication from each of the respective telephones of a type of digital signal processor (DSP) employed by the telephone. Various programs are stored at a base station for implementing various protocols in the compression and in the expansion of voice signals processed by the DSP. Such programs include differences in the output compressed signal bandwidth to be allocated to a specific service area of a base station at a specific time of day, by way of example. Programs operating the DSP can be changed upon request of a subscriber and/or upon direction from the base station. Program changes may occur also upon a hand-off between service areas of different base stations. Plural memories may be provided in an individual telephone to permit operation with one protocol during reception of a program for a different protocol. In the event of surplus channel capacity for communication via the base station, the subscriber may request, possibly at an extra monetary charge, a higher transmission bandwidth of compressed voice signal for improved voice quality.
|
