Title:
DIAL SENDING SYSTEM FOR PRIVATE BRANCH EXCHANGE NETWORK
Document Type and Number:
Japanese Patent JP3292637
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To unnecessitate the preparation work of dial sending route data and to send a call originated dial through the best route.
SOLUTION: When the call of opposite side dial is originated from an NAS 7-a, a PBX 1-a receives this opposite side dial and applies it to a CPU 6-a, and the CPU 6-a calculates the distance from each PBX 1 installed station to the opposite side based on the exchange numbers of respective PBX 1 installed stations stored in advance and the exchange number of the opposite side and defines the PBX 1 installed station in the shortest distance as a closest station. When the closest station is the other PBX 1 installed station, based on the distance from the PBX 1-a installed station to the opposite side of the closest station, public network charges are compared in the case of originating a call from the PBX 1-a and the case of originating a call from the closest station. When the charge in the case of originating a call from the closest station is lower, the dial of opposite side is sent from the PBX 1-a to the closest station by a leased line network 4-a, and the closest station sends the dial of opposite side to a public network 2.
Inventors:
Kouichi Yanai
Application Number:
JP24042895A
Publication Date:
June 17, 2002
Filing Date:
August 28, 1995
Export Citation:
Assignee:
Hitachi Telecom Technology Co., Ltd.
International Classes:
H04M3/42; H04M15/16; H04M15/34; H04Q3/58; (IPC1-7): H04M15/34; H04M3/42; H04M15/16; H04Q3/58
Domestic Patent References:
| JP2211794A | ||||
| JP383479A | ||||
| JP8149229A | ||||
| JP2174359A | ||||
| JP8265435A | ||||
| JP865394A | ||||
| JP3143150A |
Attorney, Agent or Firm:
Teruo Aoki