Method for eliminating acoustic echo in a communication device

Method for enhancing communication access in a radio communicati

Method for enhancing signal quality in a simulcast communication

Method for establishing a logical connection between sites, site

Method for establishing a user defined radio talk group in a tru

Method for forming groups of communication terminals and use of

Method for initiating and determining simulcast transmission of

Method for locating a subscriber unit that is in close proximity

Method for locating mobile stations in a digital telephone netwo

Method for more efficient service request processing

Method for non-registered communication units to access a commun

Method for operating an access control system, in particular...

Method for preventing superimposition of traffic time slots in a

Method for providing alternate communication services based on g

Method for providing autonomous radio talk group configuration

Method for providing dispatch services to communication groups a

Method for providing geographic dependent instructions to a user

Method for radiosynchronization of base stations in a simulcasti

Method for realising a group call in a digital radio network

Method for regulating power in a digital mobile telephony system