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Automation, Cinema, Computers, Television Forum
BT Phone Extensions - How Many?
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<blockquote data-quote="SPECIAL LOCATION" data-source="post: 2421" data-attributes="member: 250"><p>Back in my earlier life when I did my apprentiship within the telecommunications industry there were more items around with a REN greater than 1.</p><p></p><p>some fax machines, answer machines, dial-up auto answer modems had REN of 1.5 or even 2! which reduced the number of actual phones you could stick on the line.</p><p></p><p>However nowerdays with more electronics, I think most bog standard modern phones are classed a REN 1, there should be a sticker on the bottom.</p><p></p><p>However if you live close to your exchange and the local loop is short you can power more than REN 4!</p><p></p><p>It is basically just the reference mark that BT say should work i.e. if you can power four phones you have no grounds to complain.. but if it struggles to ring three phones you should be able to get BT out to improve quality the line at thier cost!</p><p></p><p>Remember the REN is simultaniously connected phone equipment, NOT number of LJU sockets..</p><p></p><p>Much the same as the old Volt drop problem on long cable runs. how much load are you drawing at the extremities of the circuit???????????</p></blockquote><p></p>
[QUOTE="SPECIAL LOCATION, post: 2421, member: 250"] Back in my earlier life when I did my apprentiship within the telecommunications industry there were more items around with a REN greater than 1. some fax machines, answer machines, dial-up auto answer modems had REN of 1.5 or even 2! which reduced the number of actual phones you could stick on the line. However nowerdays with more electronics, I think most bog standard modern phones are classed a REN 1, there should be a sticker on the bottom. However if you live close to your exchange and the local loop is short you can power more than REN 4! It is basically just the reference mark that BT say should work i.e. if you can power four phones you have no grounds to complain.. but if it struggles to ring three phones you should be able to get BT out to improve quality the line at thier cost! Remember the REN is simultaniously connected phone equipment, NOT number of LJU sockets.. Much the same as the old Volt drop problem on long cable runs. how much load are you drawing at the extremities of the circuit??????????? [/QUOTE]
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BT Phone Extensions - How Many?
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