B: I ues dial up, not a broad band connection.

B：我用拨号(上网)，不是宽带。

I might occasionally dial up a server to get mail or FTP files, but most of the time I was offline.

我只是为了接收邮件或者ftp文件才拨号上网，大部分时间都离线。

Soon you can dial up your friend just using a headset. The rest of the phone can be on your belt.

很快你就能只用头戴设备跟你的朋友联系了，而电话的其他设备可以挎在腰带上。

By the end of 1999, practically all schools had at least dial up connection (mostly small country side schools).

截至到1999年年底时候为止，几乎所有的学校都至少能够提供拨号连接(绝大多数是乡村学校)。

I turned the dial up into the phone portion of the band on my ham radio in order to listen to a Saturday morning swap net.

我把自己那个业余无线电收音机调到通话波段，想要听一个周六早间的交流节目。