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Knowledge Thread |
Eamonn
Joined: Nov 30, 2001
Posts: > 500
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Well said my mate Edward and the same goes for me. 
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wrecked_porsche
Joined: Jul 01, 2002
Posts: > 500
From: I'm not telling u !
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Ok then, if all is settled, let's get back to the original reason i started this thread ... Guys, why dont u edit your posts and put some facts in there and forget all that happened...... :-)
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pachy
Joined: Nov 05, 2002
Posts: > 500
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I am a reformed charactor.
FACT, The assumption that the british are obsessed with knob jokes is a complete PHALLICY |
adamizer
Joined: Sep 29, 2002
Posts: 427
From: Gothenburg, Sweden
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I bet u didnt know this
Cellular Telephones
A cellular telephone is designed to give the user maximum freedom of movement while using a telephone. A cellular telephone uses radio signals to communicate between the set and an antenna. The served area is divided into cells something like a honeycomb, and an antenna is placed within each cell and connected by telephone lines to one exchange devoted to cellular-telephone calls. This exchange connects cellular telephones to one another or transfers the call to a regular exchange if the call is between a cellular telephone and a noncellular telephone. The special cellular exchange, through computer control, selects the antenna closest to the telephone when service is requested. As the telephone roams, the exchange automatically determines when to change the serving cell based on the power of the radio signal received simultaneously at adjacent sites. This change occurs without interrupting conversation. Practical power considerations limit the distance between the telephone and the nearest cellular antenna, and since cellular phones use radio signals, it is very easy for unauthorized people to access communications carried out over cellular phones. Currently, digital cellular phones are gaining in popularity because the radio signals are harder to intercept and decode.
Making a Telephone Call
A telephone call starts when the caller lifts a handset off the base. This closes an electrical switch that initiates the flow of a steady electric current over the line between the user’s location and the exchange. The exchange detects the current and returns a dial tone, a precise combination of two notes that lets a caller know the line is ready.
Once the dial tone is heard, the caller uses a rotary or push-button dial mounted either on the handset or base to enter a sequence of digits, the telephone number of the called party. The switching equipment in the exchange removes the dial tone from the line after the first digit is received and, after receiving the last digit, determines whether the called party is in the same exchange or a different exchange. If the called party is in the same exchange, bursts of ringing current are applied to the called party’s line. Each telephone contains a ringer that responds to a specific electric frequency. When the called party answers the telephone by picking up the handset, steady current starts to flow in the called party’s line and is detected by the exchange. The exchange then stops applying ringing and sets up a connection between the caller and the called party.
If the called party is in a different exchange from the caller, the caller’s exchange sets up a connection over the telephone network to the called party’s exchange. The called exchange then handles the process of ringing, detecting an answer, and notifying the calling exchange and billing machinery when the call is completed (in telephone terminology, a call is completed when the called party answers, not when the conversation is over).
When the conversation is over, one or both parties hang up by replacing their handset on the base, stopping the flow of current. The exchange then initiates the process of taking down the connection, including notifying billing equipment of the duration of the call if appropriate. Billing equipment may or may not be involved because calls within the local calling area, which includes several nearby exchanges, may be either flat rate or message rate. In flat-rate service, the subscriber is allowed an unlimited number of calls for a fixed fee each month. For message-rate subscribers, each call involves a charge that depends on the distance between the calling and called parties and the duration of the call. A long-distance call is a call out of the local calling area and is always billed as a message-rate call.
adamizer@home.se
adamizer.freewebspace.com |
pachy
Joined: Nov 05, 2002
Posts: > 500
PM |
[quote]
On 2002-12-19 01:55, adamizer wrote:
I bet u didnt know this
Cellular Telephones
A cellular telephone is designed to give the user maximum freedom of movement while using a telephone. A cellular telephone uses radio signals to communicate between the set and an antenna. The served area is divided into cells something like a honeycomb, and an antenna is placed within each cell and connected by telephone lines to one exchange devoted to cellular-telephone calls. This exchange connects cellular telephones to one another or transfers the call to a regular exchange if the call is between a cellular telephone and a noncellular telephone. The special cellular exchange, through computer control, selects the antenna closest to the telephone when service is requested. As the telephone roams, the exchange automatically determines when to change the serving cell based on the power of the radio signal received simultaneously at adjacent sites. This change occurs without interrupting conversation. Practical power considerations limit the distance between the telephone and the nearest cellular antenna, and since cellular phones use radio signals, it is very easy for unauthorized people to access communications carried out over cellular phones. Currently, digital cellular phones are gaining in popularity because the radio signals are harder to intercept and decode.
Making a Telephone Call
A telephone call starts when the caller lifts a handset off the base. This closes an electrical switch that initiates the flow of a steady electric current over the line between the user’s location and the exchange. The exchange detects the current and returns a dial tone, a precise combination of two notes that lets a caller know the line is ready.
Once the dial tone is heard, the caller uses a rotary or push-button dial mounted either on the handset or base to enter a sequence of digits, the telephone number of the called party. The switching equipment in the exchange removes the dial tone from the line after the first digit is received and, after receiving the last digit, determines whether the called party is in the same exchange or a different exchange. If the called party is in the same exchange, bursts of ringing current are applied to the called party’s line. Each telephone contains a ringer that responds to a specific electric frequency. When the called party answers the telephone by picking up the handset, steady current starts to flow in the called party’s line and is detected by the exchange. The exchange then stops applying ringing and sets up a connection between the caller and the called party.
If the called party is in a different exchange from the caller, the caller’s exchange sets up a connection over the telephone network to the called party’s exchange. The called exchange then handles the process of ringing, detecting an answer, and notifying the calling exchange and billing machinery when the call is completed (in telephone terminology, a call is completed when the called party answers, not when the conversation is over).
When the conversation is over, one or both parties hang up by replacing their handset on the base, stopping the flow of current. The exchange then initiates the process of taking down the connection, including notifying billing equipment of the duration of the call if appropriate. Billing equipment may or may not be involved because calls within the local calling area, which includes several nearby exchanges, may be either flat rate or message rate. In flat-rate service, the subscriber is allowed an unlimited number of calls for a fixed fee each month. For message-rate subscribers, each call involves a charge that depends on the distance between the calling and called parties and the duration of the call. A long-distance call is a call out of the local calling area and is always billed as a message-rate call.
@ Adamizer, could you elaberate on that ? |
Gerbert
Joined: Nov 17, 2002
Posts: 14
From: The Netherlands (Veenendaal)
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Quote:
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On 2002-12-17 15:38, Black Cat wrote:
if you removed the space between the atoms, a camel COULD pass through the eye of a needle.
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Not true: When you remove the space between the atoms, the hole of a needle becomes smaller too |
Gerbert
Joined: Nov 17, 2002
Posts: 14
From: The Netherlands (Veenendaal)
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Helloween is an Europian tradition: (dutch) Allerheiligen = (english) All hellows eve = Helloween. Lights and so on, to scare gosts, ...
Santa Claus is a dutch tradition: Sint Nicolaas = Sint-er-klaas = Saint Claus = Santa Claus. This catholic person gave many gifts to poor people, the day before his birthday (6th december), so the dutch have Sinterklaas-evening on the 5th of December |
pachy
Joined: Nov 05, 2002
Posts: > 500
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Things that are "big" are also "SMALL" as everything is reletive.
Scientists know we need sleep,but they DO NOT know WHY we need sleep.
[ This Message was edited by: pachy on 2002-12-19 02:42 ] |
pachy
Joined: Nov 05, 2002
Posts: > 500
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Your brain tells you that
< --- this --- >
is not the same length as
> --- this --- < |
adamizer
Joined: Sep 29, 2002
Posts: 427
From: Gothenburg, Sweden
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@pachy.. Uhuh... U have to read it. Hahahahaha :-) If u dont understand then try encarta..
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ste_dexter
Joined: Dec 13, 2002
Posts: 86
From: Manchester, England
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I stand corrected about the layout of a keyboard. It was summat i was told at school. That will teach me to listen to teachers.
posted from a 7210
This post was posted from a Nokia |
wrecked_porsche
Joined: Jul 01, 2002
Posts: > 500
From: I'm not telling u !
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Any more facts ?
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Tony Ericsson
Joined: Nov 26, 2002
Posts: 91
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Scientists have calculated that Television screens drip once every thousand years, because glass is a liquid. so are tarmacadam road surfacings.
Every breath we take we are all breathing in thousands of molecules that used to make up Julius Caesar (100-44BC).
Babies born by Caesarian section,.....it`s called "Caesarian" after Caesar who was the first recorded birth of this kind. |
pachy
Joined: Nov 05, 2002
Posts: > 500
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I`m not a Star Wars fan but i read that Alec Guinness earned £12,500 every week from royalties from the film, thats EVERY week from the day he left the set to the day he died. |
wrecked_porsche
Joined: Jul 01, 2002
Posts: > 500
From: I'm not telling u !
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Wow ! Per week ! Man.....
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Access the forum with a mobile phone via esato.mobi
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Posted: 2002-12-18 17:32
