noun
call quality; speech quality
Technical term used in telecommunications to describe the clarity and reliability of voice transmission during a phone or VoIP call.
このアプリは通話品質が良いので、遠くの家族ともはっきり話せます。
This app has good call quality, so I can talk clearly even with family far away.
通話品質を改善するために、通信環境を見直す必要がある。
We need to review the communication environment to improve call quality.
Compound of 通話 (つうわ, 'telephone call') and 品質 (ひんしつ, 'quality').