【通信应用笔记】古典和新的网络SLIC的保护

【通信应用笔记】古典和新的网络SLIC的保护
AN2053
Application note

SLIC protection for both classical and new networks

Introduction
Even with booming digital technologies, telecom analog lines remain the most used link in
the world. The market opening to new operators, reserved so far to national telecom
administration, makes an increase of new applications using this simple and cheap way to
supply speech information. POTS (plain old telephone set) is still alive.

Figure 1. Proposed solutions for the subscriber


Central office