So now in this lecture, I'm going to explain in short about analog modern pichichero and weepin concentrator.
Now for this cause you do not need to know in detail of these working of these devices, you just need
to know what and how these devices work and what are they basically used for.
So what is an analog modem, a modem that is modulated and a demodulator combination of these both.
So a modem is a device that modulates an analog carrier signal to encode a digital information and then
demodulator the signal to decode the transmitter information.
I gave you an example of this when I explained the access points earlier in the section because at access
point, modulates and demoted, it's a signal just like a modem figure on the screen.
It shows a current analog modem that can be used here in today's network, although it's slow throughput.
So in short, the goal of analog modem is to produce a signal that can be transmitted easily and decoded
to reproduce the original data back.
These signals are transmitted over telephone lines and demodulator by another modem at the receiver
side in order to reach their digital data.
Because modems connect to phone lines, the location and installation of these devices is fairly cut
and dried.
It will have to have a near phone line with one and connect connected to the phone line and another
to a computer modem back.
The analog modem operator clear one that is the physical layer, just like a repeater.
Next is the packet.
Now packet shipping, also known as traffic shipping, is a form of rate limiting and Internet traffic
management technique that delays some or all the packets to bring them into compliance with you or your
company's traffic profile.
The figure on the screen shows a dedicated package paper from a blue coat, a company blue coat.
So this process is to use to optimize the guaranteed performance, improve latency or increase usable
bandwidth for some kinds of packets by delaying other kinds.
Decided on by you in the last days of this lecture is going to be VPE and concentrator.
A VPN concentrator is a device that accepts multiple VPN connections from remote locations.
Now, although this function can be performed by a router or server, as with the encryption gateways
and content filtering devices discussed earlier, the same performance benefits can be derived from
dedicated.
A specific device should be dedicated to this, and this device is nothing but the VPN concentrator.
Moreover, additional functionality usually comes with these devices, one of which is shown in the
figure on your screen.
Well, that is it.
I hope you understand the meaning of analog modem, which is used to modulate and demodulator signal.
Then Package Chipo is to limit the number of packets and VPN concentrator is to provide the VPN connections
from remote locations, multiple VPN connections from remote locations.
Well, that's it for this lecture in the next lecture.
We are going to see about the media converters and voice over Internet protocol.
That is a VIP devices.