Key telephone system with cordless terminals

Abstract

Key telephone system with a private branch exchange that includes a switching unit, stationary key terminals, and at least one of mobile cordless and GSM terminals. The switching unit is adapted to switch calls to the stationary key terminals and to the at least one of the mobile cordless and GSM terminals. The system also includes a first trunk group and a key server system, in which the stationary key terminals are coupled to the switching unit through the first trunk group and the key server system, at least one additional server comprising a memory unit, and a second trunk group having lines associated with each of the at least one of the mobile cordless and GSM terminals. The at least one additional server further includes an individual switching unit adapted to switch the lines associated with the at least one of the mobile cordless and GSM terminals, and at least one of the stationary key terminals is associated with at least one of at least one mobile cordless terminal and at least one GSM terminal and is associated with the lines associated the at least one of at least one mobile cordless terminal and at least one GSM terminal.

Dependencies are inferred from the claim text.