深圳市奧德賽創(chuàng)精密儀器有限公司銷售美國MONROE原裝進(jìn)口撥號音檢測模塊,型號:Model 90471A
90417a
Dial Tone Detection Module
The Model 90417A Module is a Dial Tone Detector. It is designed to be plugged directly into a Model 3137B Unattended Answering Device. The Model 90417A is intended for use on telephone exchanges where the central office does not provide a current interruption on calling party disconnect. Thus it provides a forced disconnect of the Model 3137B Unattended Answering
Device on return of Dial Tone
專線聯(lián)系方式:
香港奧德賽創(chuàng)科技有限公司
深圳市奧德賽創(chuàng)精密儀器有限公司
宋先生
FAX: +86(755)26978981
Mobile: +86—
www.hkautosz.com