noun
call completion; call connection
Technical term in computing and telecommunications for the successful establishment of a voice or data call.
通話接続に失敗した場合は、もう一度おかけ直しください。
If the call connection fails, please try again.
このシステムは通話接続の確立に約3秒かかります。
This system takes about three seconds to establish a call connection.
Compound of 通話 (call, conversation) and 接続 (connection). A straightforward technical term.