综合业务数字网 (綜合業務數字網) zōnghé yèwù shùzì wǎng

zōnghé yèwù shùzì wǎng proper noun Integrated Services Digital Network (ISDN)
Domain: Computer Science 计算机科学 , Subdomain: Networking
Notes: (CC-CEDICT '綜合業務數字網'; Wikipedia '综合业务数字网')