Private branch exchange, which makes it possible that, of a except house-terminal calls to start, in the presence of a third-application

摘要

A method comprising:Providing, from among a pool of ports, of a port (p), which is in a position to emulate a telephone extension;Construction of a resulting call between a terminal with the call number (t) and a terminal with the call number (c), while a call number (d) is in the form of a caller number to the terminal with the call number (t); andRelease of the ports (p) during the resulting call;the call number (c) in a data structure of the call number (d) is associated with;the call number (d) in the set of a private branch exchange; andthe resulting call introduction call has taken place, on at least one of the port (p), is based.