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The Various Steps in a VoIP Conversation

VoIP, in layman terms, is Internet telephone. It is a software that enables the user to use the Internet to call people and converse for a very nominal charge (sometimes for free as well). VoIP phones make use of the packet switching capabilities of the Internet, which allows numerous calls to occupy the space used by a single call in circuit-switched network. It also makes use of the concept of data compression which further reduces the size of the call.

The actual conversation that takes place involves various steps. All these steps combined together enable a smooth VoIP conversation. If both the parties who are conversing have analogue phones linked to the VoIP service provider’s ATA (Analogue Telephone Adapter), then the telephone call will start with one of the parties picking up the phone. This transmits a signal to the ATA. The ATA in return sends a dial tone in response to the signal. This is to ensure the Internet connection.

On dialling the desired number, the tones of the analogue phone is converted into digital data by the ATA and stored temporarily. The data related to the phone number is sent to the VoIP service providers call processor that checks the number for a valid format. The next step is mapping the phone number in which the number is converted into an IP address. The devices on both the ends of the call are connected by the soft switch, and the party who has been called receives a signal on their ATA instructing it to ask the connected number to ring.

A session is established between your computer and the called party’s system, once the other person answers the call. Both systems expect data from each other and they must use the same protocol to communicate. The packets of data are translated by the ATAs on each end into analogue audio signals, which both parties finally get to hear. Disconnecting the call will close the circuit between the VoIP phones and the ATAs. A signal is then sent to the soft switch by the ATA terminating the session.

Packet switching technology in VoIP enables telephones with the ability to communicate the way computers do.

About the Author

Dennis Jaylon is a renowned business writer who has years of experience in writing technical reviews, product descriptions and product feature analysis of technical gadgets and gizmos. He has won appreciation especially for enlightening people about the latest communication gizmos…the VoIP

Should i just give up?

I have virgin broadband, a netgear router, a cable from the router to the dsl filter, a yellow ethernet cable from the router to the laptop (the same set out for family desktop) and obvoiusly the routers power cable.
I have a buffalo wireless adapter and this doesn’t work in either computer.
I may as well not bother with the wireless connection as neither computer is cable free.
Can anyone give me step by step advice please?
I’ve rang virgin and they go though all the 192.etc and it still doesn’t work.
Do i need to some how get my computers to make friends with the adapter before using it?
Craig – for chat or advice lol?
Woodland – i did not report Craig FYI

Setting up WiFi can be a nightmare ..

OK, with the buffalo wireless adaptor plugged into one of the PC’s (you have installed the drivers I assume ?) see if you can pick up ANYONE’S Wireless Router ?

If not, then chances are the adaptor is dead .. check it in the other PC and if still ‘no service’, get a new one off eBay (they are cheap enough)

Assuming you can find something – well there are only 3 non-overlapping WiFi channel sets .. most routers default to channel ‘6′ .. if your neighbours are on the same channels you will get massive interference (although you can usually get some sort of connection) .. anyway, you should try ‘1′ and ‘11′….

If you still can’t see ‘yours’ (but can see others) then back to the Router .. (I assume you checked to see that Wireless actually enabled ?) …. OK, check to see it’s set to ‘Broadcast’ SSID (if not, then you won’t ’see’ it , only turn off Broadcast AFTER you get everything working) ..

If the PC is some distance from the router (max. of 1 brick wall, 2 plasterboard walls) check how are the router Aerials are positioned ? ? don’t ‘point’ the aerial(s) at the PC, the PC needs to see the ‘maximum’ amount of aerial (so it should be ’side on’) …

If still nothing, then the Router is dead .. send it back and get yourself a proper one (I have used the use DrayTek Vigor range for years and never, ever, had a problem with them)

DIY Vibrating 35mm adapter Part #1

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