0
votes
1answer
52 views

Are Data Cards simply L1 (Physical Layer) Devices?

I was just wondering, how many levels of the TCP/IP (OSI) Stack reside within a modem or a 3G data card and other similar networking devices? These devices do have a physical (MAC) address, which ...
3
votes
3answers
638 views

56k Single Chip Modems

I'm currently working on a project that's intended for getting old electronics that access networks through the use of a phone line to access the internet. To do this, I'm emulating a simple phone ...