Modern Cable Television Technology, 2nd Edition

Chapter 6 Cable Telephony

6.1 Introduction

This chapter covers the principles of telephony over a hybrid fiber-coax (HFC) network. Principles of telephone operation are discussed for the benefit of cable TV engineers not familiar with the telephone network. The discussion of telephone technology concentrates only on those principles that aid in understanding the operation of telephony on an HFC network. The chapter is not intended to be a dissertation on the operation of the telephone system.

The elements of a modern telephone system, generally from the switch to the subscriber, are outlined in order to aid in understanding the telephone-side interface of an HFC telephony system. This is followed by a brief introduction to the digital hierarchies ...