Abstract: A method and apparatus for determining the timing of symbols within a multiple symbol telecommunicated message by evaluating signal characteristics in both the preamble and data portions of a message. Samples of a received signal are taken at a periodic basis and a predetermined characteristic of the signal is evaluated for each sample. The sum of every ith sample may be evaluated to determine the symbol framing within the message.

Abstract: A wireless PBX system utilizes base stations dispersed throughout an area to be served with wireless telephone service. The base stations utilize multiple antennae to reduce problems associated with fading and multipath. In the present invention, the antennae of a base station or similar apparatus are rotatable, at least in pairs, so that the base station may be hung vertically, horizontally, or at some other angle to the horizon and the antennae may be readily oriented to a position which provides for preferred propagation characteristics for the antennae for the local area in which the base station is mounted.

Abstract: System and method for operating a wireless telephone system particularly a wireless Private Branch Exchange (PBX), as both a voice system and a pager system. The system includes a protocol for communicating both voice conversations and display data to a remote unit. Remote units, which may be pagers, personal communications units, mobile telephones, and the like, communicate with the wired portion of the system using the same protocols and signalling techniques.

Abstract: A method and apparatus for reducing power consumed by mobile wireless units, such as personal communications systems or wireless PBX telephones, by reducing the frequency with which various circuits within the units are fully energized. During on-going voice communications between a base station and a wireless unit, the wireless unit reduces the frequency of its references to a control channel and may eliminate such references altogether. In addition, while idle, the wireless units may not attempt to reference the control channel during all occurrences of the control channel, reducing both power consumption and the possibility of collisions with other wireless units in attempting to access the control channel.