1. Telecommunication II

2. Review On-hook position Off-hook position ON/OFF Hook Switch RJ-11
Subscriber/local loop
Twisted pair
Two-wire/Four-wire Hybrid
Advantages of DTMF dialing

3. Telephony Fundamentals
Basic Telecommunication Network

4. Telephony Fundamentals
Distribution Point (D.P.)
Distribution Cabinet (D.C.)

5. Telephony Fundamentals
Telephone Exchange
The main task of the telephone exchange is to build up a physical connection between subscriber A, the one who initiates the call, and subscriber B according to signaling information dialed by subscriber A
Stored Program Control (SPC) Exchange

6. Telephony Fundamentals
Main components of a digital exchange
BORSCHT

7. Telephony Fundamentals
PCM-30/E1 Frame
What is PCM 30 transmission rate?

8. Telephony Fundamentals
Switching network has incoming and outgoing E1 links
A system that switches according to the fed requirements
The system should be capable of switching any 8-bit code from any incoming highway to any time-slot on any outgoing highway (link) every 125 micro seconds
Each time-slot in a PCM frame belongs to a particular subscriber