Most of us are intimate with a normal business or residential line from thephonecompany . A normal phone line like this is delivered on a pair of copper telegram that transmit your vox as ananalog signaling . When you practice a normalmodemon a line like this , it can convey datum at perhaps 30 kbit per second ( 30,000 bit per second ) .
The earpiece company move nigh all voice traffic as digital rather than parallel signal . Your parallel note gets convert to a digital signal by sampling it 8,000 times per second at 8 - bit resolution ( 64,000 scrap per second ) . Nearly all digital datum now flow overfiber opticlines , and the earpiece company uses different designations to talk about the capacity of a fibre optic furrow .
If your billet has a T1 line , it means that the telephone set company has get a fiber optic line of descent into your office ( a T1 line might also come in on copper ) . A T1 wrinkle can conduct 24 digitize voice channels , or it can transport data at a rate of 1.544 megabits per endorsement . If the T1 blood is being used for phone conversations , it plugs into the office ’s phone organisation . If it is carry data point it plugs into the electronic connection ’s router .
A T1 line might cost between $ 1,000 and $ 1,500 per calendar month depend on who provides it and where it goes . The other conclusion of the T1 production line needs to be connected to aweb waiter , and the total cost is a compounding of the fee the phone companionship charges and the fee the ISP charges .
A big company need something more than a T1 line . The play along list shows some of the common line designations :
