Title:
A communications system and a correspondence procedure
Document Type and Number:
Japanese Patent JP6087950
Kind Code:
B2
Abstract:
Communication systems and communication methods are provided, by which load of a communication network when measuring a voice communication quality can be suppressed. A test signal for voice communication quality evaluation is transmitted to a communication terminal apparatus via a communication network, and a received voice data encoded by a predetermined scheme for the test signal received with the communication terminal apparatus is received from the communication terminal apparatus. A received voice signal is generated from the received voice data received from the communication terminal apparatus, and a evaluation value of voice communication quality is calculated by comparing the generated received voice signal with the test signal before transmitting.
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Inventors:
Ryo Zhang
Takao Okawari
Teruya Fujii
Takao Okawari
Teruya Fujii
Application Number:
JP2014547197A
Publication Date:
March 01, 2017
Filing Date:
April 02, 2014
Export Citation:
Assignee:
Softbank Corp.
International Classes:
H04M3/26
Domestic Patent References:
| JPH0470026A | 1992-03-05 | |||
| JPS62128636A | 1987-06-10 | |||
| JP2008532416A | 2008-08-14 | |||
| JP2003298557A | 2003-10-17 | |||
| JP2000341365A | 2000-12-08 |
Other References:
JPN6014024781; 鈴木 裕和 他: 'ＶｏＩＰネットワークにおけるＥｎｄ-ｔｏ-Ｅｎｄ ＱｏＳ監視システムの構築 Ｄｅｖｅｌｏｐｍｅｎｔ ｏｆ Ｅｎｄ-ｔｏ-Ｅｎ' 電子情報通信学会技術研究報告 ＩＥＩＣＥ Ｔｅｃｈｎｉｃａｌ Ｒｅｐｏｒｔ Ｖｏｌ．１０５ Ｎｏ．１７, 20050415, ｐ．１１-１４, 社団法人電子情報通信学会 Ｔｈｅ Ｉｎｓｔｉｔｕｔｅ ｏｆ Ｅｌｅｃｔｒｏ
Attorney, Agent or Firm:
Toshi Kuroda
Nakamura Hiromichi
Nakamura Hiromichi
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