'Telephone exchanges' presentation slideshows

Survey for Providers

Survey for Providers. Received: 8- Cable companies 21- Telephone companies 37- Telecommunication companies 2- CLEC 14- Do not provide service in MI. Cable Companies. Q1: What methods do you provide for Internet access?. A. Cable modem B. DSL C. telephone modem D. Other.

461 views • 37 slides

Backhaul 101

439 views • 30 slides

ELECTROMAGNETIC RELAYS

ELECTROMAGNETIC RELAYS. What is a relay ?. Relay is an electrically operated switch. History of relays. The American scientist Joseph Henry invented a relay in 1835 in order to improve his version of the electrical telegraph developed earlier in 1831.

1.06k views • 24 slides

IT3111: Telecom and Computing

IT3111: Telecom and Computing. Lecture 7: The PSTN - Part 3:. Contents. Telephone Exchanges The structure Tasks Switching fabric SS#7 Signaling SS#7 elements. Telephone exchanges. Subscriber lines are connected to the telephone exchanges

272 views • 21 slides

Next Generation Broadband

Next Generation Broadband. Ian Shanks Head of Scottish Affairs BT Scotland. Range of Broadband Available. 1070 Telephone Exchanges in Scotland 21 in Western Isles not broadband enabled( Wireless Network) 89 Exchange Activate Exchanges 960 at least up to 8Mbps ----------------------

290 views • 15 slides

A LOW COST LONG RANGE FM TRANSMITTER WITH AUDIO MODULATION

A LOW COST LONG RANGE FM TRANSMITTER WITH AUDIO MODULATION. Introduction. The FM transmitter has 3 stages, A (VFO) Variable frequency Oscillator (30 mw), a class C driver stage (150 mw) and a class C final power amplifier (1 Watt).

504 views • 14 slides

P R E S E N T I N G The Formidable Air Barrier

192 views • 10 slides