Telephony; traditional networks

Description

This course describes the different equipment, types of circuits and protocols that make up the traditional telephone network and its functioning.

Target audience:

Planners, engineers, network administrators and technicians whose duties require an understanding of networks of voice.

Learning objectives:

1. Understand and use terminology inherent in networks of voice;

2. Describe the technologies used in networks of digital and analogue transmission;

3. Describe the main components of the networks voice;

4. Describe the basic concepts and operation of networks of voice.

Course duration: 2 days

Course content:

DAY 1

Telephone networks

Telephony networks and voice

Transmission of voice signal

- Analog

- Digital

- Nyquist theorem

- PCM / G.711

- Compression - ADPCM (G.726), ACELP-CN (G.729)

RTPC

- CO, switching and switches

- The local-loop

- Pairs pupinisées

- Frequency Response

- Remote Devices

- The inter-circuit central

Establishing a call

Signaling and supervision

- Loop start

- Ground start

- 4W E&M

- Wink start, immediate start, delay dial

Pulse Signaling / DTMF / MF

Digital Networks

In-band Signaling / A & B bits / CAS

- PDH (DS-1) / Frame Format

- D4 / ESF

- Line-encoding

- AMI / B8ZS

DAY 2

Channel Signaling

SS7 / CCS / T-CCS

RNIS

- Components

- NT-1, NT-2, AT

- Interfaces

- U-LOOP, S et T

-Protocols and encodings

- Q.930, Q.931

- 2B1Q / AMI

-PRI / BRI

Resonance Phenomenon

Regulation

ILEC, CLEC, LATA, IXA

Number portability (technology)

Corporate Networks

Key systems and PBX

Circuits (COT, DID, connecting lines)

-TFU, TFK, TSL, TFB

- Row Groups

- Linear, circular

- B-32, B34

- Signaling

- QSIG, RNIS

- FXS et FXO

- Sizing

- CCS, Erlang

- Poisson tables, Erlang tables

- Automatic route selection

- DAA and Call centers

Centrex Services

Added value services

Voice mail, IVR and CTI, Unified Messaging

Note :

This course can be adapted to the telephone equipment used by your company.