Circuit arrangement for a telephone system, in particular a telephone PBX system, with speech path and signal path through-connection via serially connected couplers for the connection of conference circuits

摘要

The terminal stations can be connected to columns or lines of couplers with mutually independently operable coupling points and intermediate lines can be connected to the lines or columns of these couplers, which intermediate lines connect couplers of different terminal station groups, where a coupler is inserted in these intermediate lines for the connection of conference circuits, via which at least two internal terminal stations and at least one exchange line can be interconnected via a further coupler, connected in parallel with the exchange coupler, for a conference connection. <IMAGE>