VOIP Pros & Cons
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The document discusses VoIP (Voice over Internet Protocol), including what it is, how it works, common protocols used, factors important for network design like quality of service, and pros and cons. VoIP converts voice signals to digital signals transmitted over the internet, allowing phone calls via an internet connection. Key protocols include SIP, H.323, and RTP. Network design considerations involve services, providers, call routing, and ensuring quality of service through sufficient bandwidth and management of delay, jitter, packet loss and echo. Advantages include cost savings, features, and flexibility, while disadvantages include reliance on the network and potential quality issues.
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Voice-over-Internet Protocol (VoIP) ppt
This document provides an overview of Voice over Internet Protocol (VoIP) through a seminar presentation covering what VoIP is, why and when to use it, how it works, its architecture and components, advantages, disadvantages, alternatives, and the future of VoIP. Key points include that VoIP allows routing of voice conversations over the internet or IP networks, it can provide cheaper telecommunications through reduced phone and wiring costs, and integrates features like video conferencing. Quality concerns and dependency on network hardware are disadvantages.
VOIP
VOICE OVER INTERNET PROTOCOL (VOIP) allows users to make phone calls using an Internet connection rather than a traditional phone line. VOIP compresses voice data, converts it to digital signals in IP packets, and transports them over the Internet or data networks. This provides economic benefits compared to traditional phone networks since the same infrastructure can be used for both data and voice. While VOIP provides advantages like low cost and ability to communicate anywhere, it faces challenges around voice delays and compatibility with existing phone networks. Key components of a VOIP system include clients, servers, and gateways to connect VOIP and traditional phone networks.
Voip introduction
VoIP, or Voice over Internet Protocol, is a technology that allows users to make voice calls using an Internet connection instead of a regular phone line. It works by converting voice signals into digital data packets that travel over the Internet and are then reconstructed at the other end. There are several VoIP protocols used and many applications that employ VoIP, including Skype. VoIP offers advantages over traditional phone service like lower costs, additional features included for free, and the ability to make calls from any Internet-connected device.
Voip
VoIP is a technology that allows phone calls to be made over the internet. It works by converting analog voice signals to digital data that is sent in packets over IP networks. Common VoIP technologies include H.323, SIP, and RTP. VoIP can be implemented through analog telephone adapters, IP phones, or computer-to-computer calls. While VoIP provides benefits like low costs and integration with other applications, it also faces challenges related to quality of service, emergency calls, and lack of redundancy in case of power failures.
Voip
VoIP allows users to make phone calls using an Internet connection rather than a traditional phone line. It works by converting the voice signal from analog to digital, breaking it into packets, sending it over IP, reassembling it at the destination, and converting it back to analog. VoIP has advantages like low cost and portability but disadvantages like quality issues during power outages or network instability. Major challenges include addressing latency, echo, jitter, connection problems through firewalls and NAT, and overall reliability.
SIP Trunking
SIP (Session Initiation Protocol) trunking connects a company's PBX to the existing telephone network infrastructure via the internet using VoIP. It was originally designed in 1996 and standardized in 2000. SIP trunking provides benefits like virtual phone numbers, reduced equipment needs, business continuity, and flexible trunk quantities. However, considerations must include system compatibility, additional bandwidth requirements, and challenges like supporting fax/modem traffic and 911 calls. The document discusses ideal environments for SIP trunking like companies with multiple locations, seasonal needs, or those seeking increased functionality. It also reviews cost components and provides an overview of SIP trunking.
VOIP BASIC
This document provides an overview of Voice over IP (VoIP) technology. It discusses how VoIP works by digitizing and transmitting voice signals over the internet using IP packets. It describes common VoIP protocols like H.323 and SIP. The advantages of VoIP include lower costs, flexibility, and the ability to make calls from any internet connection. Disadvantages include reliance on internet access and potential quality issues during network congestion. The document provides details on how to implement VoIP securely and protect against risks.
Voice over Internet Protocol
VoIP is one of a family of internet technologies and transmission technologies for delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks.
FB: https://www.facebook.com/mstfahsin
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Voice-over-Internet Protocol (VoIP) ppt
This document provides an overview of Voice over Internet Protocol (VoIP) through a seminar presentation covering what VoIP is, why and when to use it, how it works, its architecture and components, advantages, disadvantages, alternatives, and the future of VoIP. Key points include that VoIP allows routing of voice conversations over the internet or IP networks, it can provide cheaper telecommunications through reduced phone and wiring costs, and integrates features like video conferencing. Quality concerns and dependency on network hardware are disadvantages.
VOIP
VOICE OVER INTERNET PROTOCOL (VOIP) allows users to make phone calls using an Internet connection rather than a traditional phone line. VOIP compresses voice data, converts it to digital signals in IP packets, and transports them over the Internet or data networks. This provides economic benefits compared to traditional phone networks since the same infrastructure can be used for both data and voice. While VOIP provides advantages like low cost and ability to communicate anywhere, it faces challenges around voice delays and compatibility with existing phone networks. Key components of a VOIP system include clients, servers, and gateways to connect VOIP and traditional phone networks.
Voip introduction
VoIP, or Voice over Internet Protocol, is a technology that allows users to make voice calls using an Internet connection instead of a regular phone line. It works by converting voice signals into digital data packets that travel over the Internet and are then reconstructed at the other end. There are several VoIP protocols used and many applications that employ VoIP, including Skype. VoIP offers advantages over traditional phone service like lower costs, additional features included for free, and the ability to make calls from any Internet-connected device.
Voip
VoIP is a technology that allows phone calls to be made over the internet. It works by converting analog voice signals to digital data that is sent in packets over IP networks. Common VoIP technologies include H.323, SIP, and RTP. VoIP can be implemented through analog telephone adapters, IP phones, or computer-to-computer calls. While VoIP provides benefits like low costs and integration with other applications, it also faces challenges related to quality of service, emergency calls, and lack of redundancy in case of power failures.
Voip
VoIP allows users to make phone calls using an Internet connection rather than a traditional phone line. It works by converting the voice signal from analog to digital, breaking it into packets, sending it over IP, reassembling it at the destination, and converting it back to analog. VoIP has advantages like low cost and portability but disadvantages like quality issues during power outages or network instability. Major challenges include addressing latency, echo, jitter, connection problems through firewalls and NAT, and overall reliability.
SIP Trunking
SIP (Session Initiation Protocol) trunking connects a company's PBX to the existing telephone network infrastructure via the internet using VoIP. It was originally designed in 1996 and standardized in 2000. SIP trunking provides benefits like virtual phone numbers, reduced equipment needs, business continuity, and flexible trunk quantities. However, considerations must include system compatibility, additional bandwidth requirements, and challenges like supporting fax/modem traffic and 911 calls. The document discusses ideal environments for SIP trunking like companies with multiple locations, seasonal needs, or those seeking increased functionality. It also reviews cost components and provides an overview of SIP trunking.
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This document provides an overview of Voice over IP (VoIP) technology. It discusses how VoIP works by digitizing and transmitting voice signals over the internet using IP packets. It describes common VoIP protocols like H.323 and SIP. The advantages of VoIP include lower costs, flexibility, and the ability to make calls from any internet connection. Disadvantages include reliance on internet access and potential quality issues during network congestion. The document provides details on how to implement VoIP securely and protect against risks.
Voice over Internet Protocol
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Voip powerpoint
VoIP stands for Voice over Internet Protocol. It allows users to make phone calls using an IP network rather than a traditional telephone network. VoIP works by converting voice into packets of data that travel over the internet through routers to reach the destination. While it is beginning to be used more in businesses due to lower costs, some reliability issues with lost data packets can cause jittering and lower sound quality compared to traditional phone networks.
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Overview of VoIP (Voice over IP) and FoIP (Fax over IP) technologies like Session Initiation Protocol and H.323.
Even though voice over IP (VoIP) was hailed as a technological innovation, the idea to transport real-time traffic over TCP/IP networks was not new back in the 1990s when VoIP started being deployed in networks. Chapter 2.5 of the venerable RFC793 (TCP) shows both data oriented application traffic as well as voice being transported over IP based networks.
Nevertheless, VoIP puts high demands on signal and protocol processing capabilities so it became possible at reasonable costs only in the 1990s.
VoIP can be roughly split into two main functions. Signaling protocols like SIP (Session Initiation Protocol), H.323 and MGCP/H.248 are used to establish a conference session and the data path for transporting real-time voice data packets. SIP has largely supplanted H.323 in recent years to its simpler structure and packet sequences. MGCP and H.248 are mostly used in carrier backbone networks.
Protocols like RTP (Real Time Protocol) transport voice packets and provide the necessary information for receivers to equalize packet flow variations to provide a smooth playback of the original voice signal.
Voice codecs are one of the core functions of the data path. Voice compression reduces the bandwidth required to transport voice over an IP based network. Compression may be less of a concern in local area networks with gigabit speeds, on slower links like 3G (UMTS, LTE) it still makes a lot of sense.
The algorithms used in different codecs make use of various characteristics of the characteristics of human speech recognition. Redundant information is removed from the signals thus slightly reducing the quality, but greatly reducing the required bandwidth.
In VoIP networks, the echo problem is typically compounded by the increased delay incurred by packetization of voice signals. To counteract the echo problem, VoIP gear (hard phones, soft phones, gateways) include echo cancelers to remove echo signals from the transmit signal.
To transport facsimile over an IP based network, even more technology is needed. Facsimile protocols are very susceptible to delay and delay variation and thus need more compensation algorithms. Protocols like T.38 terminate facsimile protocols like T.30 (analog facsimile) and transport the fax images as digitized pictures over IP based networks.
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Voice over Internet Protocol (VoIP) is a technology that allows users to make voice calls over an Internet Protocol (IP) network like the Internet instead of traditional telephone lines. It converts analog voice signals to digital data that can be sent in IP packets over broadband connections. Standards organizations like the IETF and ITU work to standardize VoIP protocols to ensure interoperability. Common VoIP protocols include SIP, H.323, and MGCP. VoIP allows for phone-to-phone calls over the Internet as well as phone-to-PC and PC-to-phone calls. Services like Vonage and Skype use VoIP to allow users to make inexpensive calls over the Internet.
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# Underlying LTE Network : MME , SGW , PGW , PCRF , HSS , Dedicated Bearer , QCI , Default Bearer
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Even though voice over IP (VoIP) was hailed as a technological innovation, the idea to transport real-time traffic over TCP/IP networks was not new back in the 1990s when VoIP started being deployed in networks. Chapter 2.5 of the venerable RFC793 (TCP) shows both data oriented application traffic as well as voice being transported over IP based networks.
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- 2. What is VoIP? Voice over Internet Protocol It is a method of making calls via internet protocol networks It is also known as Internet telephony, IP telephony, broadband telephony It is the ability to transmit and receive voice telephone calls over an Ethernet data connection VoIP converts the voice signal from our telephone into a digital signal that travels over the Internet
- 3. How Does VoIP Work? Human voice must be packetized Uses circuit-switching mechanism Voice packetization involves appending headers with routing information Multiple voice samples are combined into a packet Voice packet is switched hop-by-hop through the network
- 4. Protocols of VoIP H.323 Media Gateway Control Protocol (MGCP) Session Initiation Protocol (SIP) H.248 (also known as Media Gateway Control (Megaco)) Real-time Transport Protocol (RTP) Real-time Transport Control Protocol (RTCP) Secure Real-time Transport Protocol (SRTP) Session Description Protocol (SDP) Inter-Asterisk eXchange (IAX) Jingle XMPP VoIP extensions Skype protocol Teamspeak The H.323 protocol was one of the first VoIP protocols that found widespread implementation for long-distance traffic, as well as local area network services
- 5. Network Design for VoIP Step 1: Identify the services you plan to sell. Step 2: Identify the type of carriers or providers with which you plan to interconnect. Step 3: Determine the interconnection types you plan to use. Step 4: Determine the call topologies you plan to use. Step 5: Identify the appropriate deployment scenario. Step 6: Identify the functional areas you require. Step 7: Identify the required hardware and software components. Step 8: Identify design and scalability issues. Step 9: Configure and provision components.
- 6. Quality of Service (QoS) in VoIP Systems Delay Jitter Packet loss Echo Throughput
- 7. Advantages of VoIP i. Cost savings ii. Rich media service iii. Portability iv. Low Taxes v. Low Cabling cost vi. Features vii. Flexibility viii. Video-Conferencing ix. Human Resource Leveraging x. Scale xi. Diversity xii. Single Network/Cable xiii. Remote Maintenance xiv. Connecting to Internet xv. Computer telephony integration xvi. Multiple Lines xvii. User Control Interface xviii. No geographical boundary
- 8. Disadvantages of VoIP i. No service during a power outage ii. Emergency calls iii. Reliability iv. VoIP Voice Quality v. Security vi. Shared Bandwidth vii. Bandwidth Dependency viii. Compatibility ix. Internal issues x. Network integrity & QOS xi. Disadvantages of VOIP to Big Business xii. Other