Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
H04M3/42—Systems providing special services or facilities to subscribers
H04M3/58—Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party
Landscapes
Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
Sub-Exchange Stations And Push- Button Telephones
(AREA)
Management, Administration, Business Operations System, And Electronic Commerce
(AREA)
Schaltungsanordnung fuer Fernsprechanlagen, insbesondere selbsttaetige Fernsprechanlagen, mit mechanisch voneinander unabhaengigen Waehlern, die Zugang zu Gruppen abgehender Leitungen haben
Schaltungsanordnung fuer Fernsprechanlagen mit Waehlern, bei denen mehrere selbsttaetige oder halbselbsttaetige Zentralen hintereinander an Verbindungsleitungen angeschlossen sind