互联网似乎是惟一一张让众人愿意自投罗网的“网”。而每个人“落网”的方式又不尽相同。稍稍总结一下,目前可供我们入网的方式主要有9种,即:PSTN、ISDN、DDN、LAN、ADSL、VDSI、Cable-Modem、PON和LMDS。同样入网,哪种方式更舒服些呢? 拨号接入最广泛 PSTN(Published Switched Telephone Network,公用电话交换网)即“拨号接入”,就是指通过普通电话线上网。用户在上网的同时,不能再接收电话。目前 The Internet seems to be the only “web” that allows people to vote for themselves. And the way everyone “catch up” is not the same. Slightly summarized, currently there are nine main methods for accessing the network: PSTN, ISDN, DDN, LAN, ADSL, VDSI, Cable-Modem, PON, and LMDS. The same access to the Internet, which way is more comfortable? Dial-up access the most widely PSTN (Published Switched Telephone Network, public switched telephone network) that is “dial-up access”, refers to the Internet through ordinary telephone lines. Users can no longer receive calls while surfing the Internet. Currently