公开(公告)号：US3206554A

公开(公告)日：1965-09-14

申请号：US24005862

申请日：1962-11-26

Applicant: BELL TELEPHONE LABOR INC

Inventor： SAMUEL KANDEL ,  KROM MYRON E ,  NIELSON CARL C ,  ALFRED ZAROUNI

IPC: H04M3/44

CPC classification number: H04M3/44

公开(公告)号：US3415954A

公开(公告)日：1968-12-10

申请号：US42674865

申请日：1965-01-21

Applicant: BELL TELEPHONE LABOR INC

Inventor： SAMUEL KANDEL ,  NIELSON CARL C

IPC: H04M3/54

CPC classification number: H04M3/54

公开(公告)号：US3553385A

公开(公告)日：1971-01-05

申请号：US3553385D

申请日：1968-10-11

Applicant: BELL TELEPHONE LABOR INC

Inventor： MORGAN DENNIS J ,  NIELSON CARL C

IPC: H04Q3/00 ,  H04M3/48

CPC classification number: H04Q3/00

Abstract: A switching system is arranged with control circuitry including a processor to store call completion information for subsequent automatic retry purposes on calling connections which are not completed initially. When a connection is blocked because of the unavailability of trunk circuits the completion information is stored in a high queue list; and when a trunk is available but the call blocks in a subsequent office or blocks because the called station is busy the completion information is stored in a low queue list. Calls are retried from the high queue list whenever a trunk becomes available and retried from the low queue list under periodic clock control. During the queuing interval the calling subscriber''s line remains free for the origination or the termination of other connections.

公开(公告)号：US3542962A

公开(公告)日：1970-11-24

申请号：US3542962D

申请日：1968-03-11

Applicant: BELL TELEPHONE LABOR INC

Inventor： MORGAN DENNIS J ,  NIELSON CARL C ,  WHITEMYER JAMES G

IPC: H04Q3/54 ,  H04M3/42

CPC classification number: H04Q3/54 ,  Y10S379/914

公开(公告)号：US3363063A

公开(公告)日：1968-01-09

申请号：US42100664

申请日：1964-12-24

Applicant: BELL TELEPHONE LABOR INC

Inventor： SAMUEL KANDEL ,  NIELSON CARL C

IPC: H04M3/42 ,  H04M3/54 ,  H04Q3/42

CPC classification number: H04M3/42 ,  H04M3/54 ,  H04Q3/42