Voip

VoIP Final Project

VOIP

• What is VoIP?

• Ways of using VoIP?

• What is PSTN?

• What are the Challanges?

• Advantages of the VoIP usage?

• VoIP prices?

• VoIP in Turkey and legal issues?

• What is Packet switching

• What is circuit switching

• What is business VoIP?

• What is enterprise VoIP?

• What is VoIP phone?

• What is Internet telephony?

• What is hosted VoIP?

• Difference between PSTN and VOIP

What is VoIP?

• Voice-over-Internet protocol (VoIP) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks.

• VoIP allows you to make telephone calls

• using a computer network, over a data network like the Internet

• VoIP uses the internet as its medium to send voice.

• • For our purposes we will restrict it to mean voice communications among 2 or more computers.

What is Enterprise VoIP ?

Enterprise VoIP Results• branch exchange (PBX)

capabilities

• conference calling

• desk-to-desk calling

• music on hold and automated attendants

Enterprise VOIP continued..

Enterprise VoIP Results• offer an additional level of security

• such as IPsec encryption

• Voice over Secure IP (VoSIP)

• Secure Voice over IP (SVoIP)

• Secure Voice over Secure IP (SVoSIP) to help protect confidential VoIP communications.

What is VOIP Host ?

• A form of business VoIP services where the VoIP equipment, servers and services are hosted by the VoIP provider, which manages calls and routes them to and from the subscriber's existing telephony system and equipment. Hosted VoIP is also frequently referred to as managed VoIP and can save companies from the potentially expensive costs of having to invest in VoIP equipment and manage the system.

Voip telephony

• VoIP phones utilize packet-switched Voice over Internet Protocol (VoIP), or Internet telephony, to transmit telephone calls over the Internet as opposed to the circuit-switched telephony used by the traditional Public Switched Telephone Network (PSTN). The advantage to VoIP phone calls is that unlike regular long-distance calls, phone calls made through a VoIP phone service are free – there are no fees beyond the cost of your Internet access.

What is Analog telephone adapter (ATA) ?

• An analog telephony adapter or analog telephone adapter (ATA) is a device used to connect one or more standard analog telephones to a digital telephone system (such as voice over IP) or a non-standard telephone system.

The Difference Between VoIP and PSTN Systems

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What is PSTN ?

• The Public Switched Telephone Network (PSTN), also known as Plain Old Telephone Service (POTS), is the wired phone system over which landline telephone calls are made. The PSTN relies on circuit switching. To connect one phone to another, the phone call is routed through numerous switches operating on a local, regional, national or international level. The connection established between the two phones is called a circuit

Circuit switching

• Circuit switching is a methodology of implementing a telecommunications network in which two network nodes establish a dedicated communications channel (circuit) through the network before the nodes may communicate.

• The circuit guarantees the full bandwidth of the channel and remains connected for the duration of the communication session.

Packet Switching

• Packet switching which divides the data to be transmitted into packets transmitted through the network independently.

• Each packet is then transmitted individually and can even follow different routes to its destination. Once all the packets forming a message arrive at the destination, they are recompiled into the original message.

PSTN vs. VoIP: Feature-by-feature comparison(1)

VOIP• Internet connectivity

• Free VoIP-to-VoIP calling (local and international), but calls to mobile and landline phones have nominal subscription fees of around 1.2 cents to 2.6 cents a minute.

• Upgrades usually require more bandwidth and simple software updates.

PSTN• Dedicated telephone lines

• No free calls can be made. Costly international calling. Monthly phone plans usually cost around $25 to $30 per month depending on service provider.

• Upgrades require purchasing more hardware and dedicated lines, which can be very complex and costly.


VOIP• This feature is typically standard

• Most VoIP options offer free call waiting, such as Google Voice and Skype

• Some VoIP options provide free call forwarding (Google Voice), while others offer it for an extra fee or through a subscription (Skype).

PSTN• This feature typically requires

dedicated lines for each extension and is very pricey.

• Available at extra cost

• Available at extra cost


VOIP• Some VoIP options provide free call

transferring (Google Voice), while others do not support call transferring at all (Skype).

• Depends on the service, but emergency calling is usually not provided by VoIP or is very limited (Skype). 911 calls are also typically untraceable.

PSTN• Available at extra cost

• Emergency calling is enabled, and services are traceable to location.

VOIP SERVICES PROVIDER

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Supporting content

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GOOGLE VOICE VS. SKYPE

CHALLANGES & ADVANTAGES OF VOIP

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VoIP Challenges

• Packet loss

• Latency

• Jitter

• Echo

• Reliability

• Firewalls

VoIP Challenges

• VoIP implementations face problems dealing with latency , echo and jitter

• Echo: waving of voice

• Latency: Changing in delivery time between voice packets

• Jitter: Changing in delivery order of voice packets

VoIP Challenges

• Connection Problems:

• Echo and jitter occurs because of packet loss.

• Internet stability problems can cause reliability problems and this discourages voip usage.

• routing VoIP traffic through firewalls blocks voice packets transmission.

Advantages of VoIP

• What are the esssential factors that encourages people to use VoIP?

• Cost of equipment and deployement

• Low price in leased-line(home phone)

• Portability

• Flexibility

• Versatility

• Interconnectivity

Advantages of VoIP Continued..

• Integrated Messaging: integrates Voice Mail with E-Mai

Project SummaryOptional statement

Conclusion

Voice over Internet Protocol (VoIP) phones is the wave of the future. As technology improves, VoIP phone systems will continue to thrive as a more efficient, cost effective way to terminate phone calls. There are loads of benefits for using VoIP. One of the main benefits is the cost efficiency.

Nowadays VoIP technology is generally used in all offices for making long distance voice calls with real time voice quality at low charges. So, VoIP technology will be the best source for long distance communication up to date. It is more useful for business use too. Using a VoIP phone system will make business sound more professional.

VoIP technology will be the trend of future. Already, more than 50 million people and businesses have begun to subscribe to a VoIP phone provider

Refernces

Voip

Education

Transcript of Voip