Title:
ISDN TERMINAL ADAPTER
Document Type and Number:
Japanese Patent JPH04288750
Kind Code:
A
Abstract:
PURPOSE: To economize a communication tariff by retuning a call originating request destination in a device when the destination is the own station.
CONSTITUTION: A switch 5 for return is a switch for returning data from one of DTE interfaces 3 and 4 of A and B channels to the other interface. When a call is originated at the A channel and incoming to the B channel and there is a call originating request from the A channel, a CPU part 11 recognizes a caller number supplied from the first DTE interface 3 as the caller number of the B channel, controls the switch 5 for return and forms a loop so as to connect the first and second DTE interfaces 3 and 4.
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Inventors:
HIRAGUCHI MASAYOSHI
IMADA WATARU
IMADA WATARU
Application Number:
JP7707491A
Publication Date:
October 13, 1992
Filing Date:
March 18, 1991
Export Citation:
Assignee:
NEC CORP
NEC SHIZUOKA LTD
NEC SHIZUOKA LTD
International Classes:
H04L29/10; H04Q5/00; (IPC1-7): H04L29/10; H04Q5/00
Attorney, Agent or Firm:
Yosuke Goto (2 outside)