Sascha Kylau

1
What is VoIP and how can it effect your business?

• Sascha Kylau
• Business Development Manager, Central Station
  Communication Products - Global

2
What is VoIP?

• Voice over IP or VoIP is a term used in IP
  telephony for a set of facilities that use the
  Internet Protocol (IP) to deliver voice
  information
• In general, this means sending voice information
  in digital form in discrete packets rather than
  in the traditional circuit-committed protocols of
  the public switched telephone network (PSTN)
• A major advantage of VoIP and Internet telephony
  is that they avoid the tolls charged by ordinary
  telephone service

3
Different Types of VoIP

• ATT/Verizon IP Flex circuits (IP T1s)
• Verizon FIOS (Fiber to the premises)
• Packet Switched Networks
• UK (CN21), Spain, Canada
• Cable (Digital Phone) Facilitated VoIP
• Internet VoIP (Vonage) Non-Facilitated VoIP

4
ATT/Verizon IP Flex Circuits

• IP Flex T1
• IP Flex T1 is specifically designed for small
  businesses that are looking for a cost-effective
  way to carry voice and data over the same
  connection and require only standard voice
  telephony features.
• Can be custom built with specific features and
  codecs

5
Verizon FiOS

• Fiber circuit right to the premise
• Get bundled service (TV, Internet, Phone)
• Digital to the outside of the house
• Software upgrades are routinely performed (No
  service during this time)

6
Packet Switched Networks

• Some countries are switching their entire phone
  network to an IP backbone and switches
• UK (CN21)
• Spain
• Canada (Bell Canada)

7
Cable Digital Phone

• Cable companies have their own voice over data
  product
• They call it digital phone
• They convert voice in to data packets using their
  own proprietary protocol (DOCSIS)
• Data Over Cable Service Interface Specification
  is an international standard developed by
  CableLabs

8
Internet VoIP

• There are many different types of VoIP
  applications that use the Internet
• There are peer to peer PC applications such as
  Skype
• Applications that use MTAs such as Vonage
• IP PBX applications that use the
  Internet/Intranet to make virtual extensions
  available to companies with multiple offices
  without having to buy a switch for each office

9
Facilitated VoIP
The above figure shows the communication path
through a facilitated Voice over IP provider. In
this example the alarm panel has a POTS
connection from the MTA. The MTA then converts
the call into IP packets and sends the
information across the provider network through a
cable modem to a server that is connected to an
SS7 switch. The call is then converted back to
analog and sent across the public switch
telephone network to the receiver in the central
station.
10
Non-Facilitated VoIP
The above figure shows the communication path
through a Non-facilitated Voice over IP provider.
In this example the alarm panel has a POTS
connection from the MTA. The MTA then converts
the call into IP packets and sends the
information through the DSL modem to the Internet
using and then onto the VoIP provider network to
a server that is connected to an SS7 switch. The
call is then converted back to analog and sent
across the public switch telephone network to the
receiver in the central station.
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What is a Codec?

• Codec
• A codec is a device or program capable of
  encoding and/or decoding a digital data stream or
  signal.
• Codecs are used to convert an analog voice signal
  to digitally encoded version.
• Codecs vary in sound quality, the bandwidth
  required, the computational requirements etc.
  There many different types of codes that encode
  analog signals such as G711, G722, G723, G726,
  G729 etc.

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How can a Codec effect alarm transmission?

• There are many different types of codecs and
  their characteristics differ as well for example
• G.711
• G.711 is an ITU-T standard for audio compounding.
  
• It is primarily used in telephony
• G.711 emulates the circuit switched network and
  works best with alarm communication
• G.711 also uses the most bandwidth of any of the
  codecs which also makes it the least cost
  effective

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How can a Codec effect alarm transmission?

• G.729
• G.729 is mostly used in Voice over IP (VoIP)
  applications for its low bandwidth requirement.
• G.729 is an audio data compression algorithm for
  voice that compresses voice audio in chunks of 10
  milliseconds.
• Music or tones such as DTMF or fax tones can only
  be transported reliably with this codec using the
  RTP payload for DTMF Digits, Telephony Tones, and
  Telephony Signals as specified in RFC 2833, and
  thus use G.711 or out-of-band methods to
  transport these signals

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Alternate Alarm Transmission Methods

• GSM
• GPRS (DSC, Honeywell)
• SMS (Tellular, Uplink)
• Radio
• Licensed/ Unlicensed (AES, KP Electronics)
• Internet/Intranet
• TCP/IP (Honeywell, GE)
• UDP/IP (DSC, Bosch, DMP)
• VOIP Gateway products (NextAlarm.com, LoBeen
  etc.)

15
Using IP for Alarm Signaling

• Pros for using IP
• Supervision of an alarm panel can be accomplished
  when using IP signaling
• Higher level of security
• Alarms can be received much quicker when using IP
  for communication than over traditional POTS
• Much faster upload/download of the panel
• Cons for using IP
• If there is a power outage then a UPS on all
  network equipment that the communicator is linked
  to is required
• The premise connection to the Internet/Intranet
  is only as good as the ISP being used

16
Using Digital Cellular or Radio for Alarm
Signaling

• Pros for using Cellular
• Can be run off of a battery so it will work
  during power outages
• Not effected by phone line cuts
• Cons for using Cellular
• Signal strength and coverage maybe an issue in
  certain areas
• Additional Cost
• Not conducive for all building environments and
  may require an external antenna

17
Using VoIP Gateway Technologies

• Pros for using VoIP Gateway products
• Use existing panel in the premise
• Acts like a phone line
• Upload/download the panel
• Cons for using VoIP Gateway products
• Cost
• Power outages
• Reliability of ISP
• Added potential point of failure (Clearing
  center/software receiver)

18
Wrap Up

• The Phone networks are changing
• Increasing amount of technology options for
  sending alarms
• POTS communication will not always work

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Questions?
20
Glossary

• VoIP (Voice over Internet Protocol)
• A technology for transmitting ordinary telephone
  calls over the Internet using packet linked
  routes.
• Internet
• The vast collection of inter-connected networks
  that all use the TCP/IP protocols and that
  evolved from the ARPANET of the late 60's and
  early 70's. The Internet now (July 1995) connects
  roughly 60,000 independent networks into a vast
  global internet
• Intranet
• A private network inside a company or
  organization that uses the same kinds of software
  that you would find on the public Internet, but
  only for internal use
• NOC (Network Operations Center)
• NOC is the organization responsible for the
  day-to-day operations of the Internet',
  telecommunications or cable company component
  networks
• ISP (Internet Service Provider)
• A business that provides subscriber-based access
  to the Internet. Subscribers can be individuals
  or businesses. ISPs operate at the fourth or
  lowest level of the Internet.
• Packet Switching
• A means of economically sending and receiving
  data over multiple network channels. Packet
  switching takes data and breaks it down into
  packets-small bundles of information containing
  the payload and routing information. The packets
  are then transmitted to the receiving end, where
  they are converted back to the original data

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Glossary

• Circuit Switching
• In telecommunications, a circuit switching
  network is one that establishes a fixed bandwidth
  circuit (or channel) between nodes and terminals
  before the users may communicate, as if the nodes
  were physically connected with an electrical
  circuit. The bit delay si constant during the
  connection, as opposed to packet switching, where
  packet queues may cause varying delay
• Signaling System 7 (SS7)
• The basis for routing traffic with out-of-bound
  signaling. SS7 in itself is not a network
  service offering, but rather the underlying
  infrastructure upon which many existing and
  proposed offerings are based.
• Codec
• A codec is a device or program capable of
  encoding and/or decoding a digital data stream or
  signal. Codecs are used to convert an analog
  voice signal to digitally encoded version.
  Cedecs vary in sound quality, the bandwidth
  required, the computational requirements etc.
• ITU (International Telecommunication Union)
• Established to standardize and regulate
  international radio and telecommunications. It
  was founded as the International Telegraph Union
  in Paris on May 17, 1865. Its main tasks include
  standardization, allocation of radio spectrum,
  and organizing interconnection arrangements
  between different countries to allow
  international phone calls
• RFC (Request for Comments)
• In computer network engineering, a request for
  comments is a memorandum published by the
  Internet Engineering Task Force (IETF) describing
  methods, behaviors, research, or innovations
  applicable to the working of the Internet and
  Internet-connected systems.

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Glossary

• Cellular
• In Wireless communications, cellular refers most
  basically to the structure of the wireless
  transmission networks which are comprised of
  cells or transmission sites.
• GSM (Global System for Mobile Communications)
• GSM is the most popular standard for mobile
  phones in the world. Its promoter, the GSM
  association, estimates that 82 of the global
  mobile market uses the standard
• GPRS (General Packet Radio Service)
• GPRS is a packet oriented mobile data service
  available to users of (GSM) mobile phones. It
  provides data rates from 56 up to 114 Kbits'.
• SMS (Short Message Service)
• SMS is a communications protocol allowing the
  interchange of short text messages between mobile
  telephone devices
• AMPS
• The analog cellular mobile phone system in North
  and South America and more than 35 other
  countries. AMPS is the cellular equivalent of
  POTS.
• Radio
• A communications device allowing the wireless
  transmission through space of audible signals
  encoded in electromagnetic waves in the
  approximate frequency range from 10 kilohertz to
  300,000 megahertz.
• Clearing House
• an organization that exists to gather information
  from a variety of sources and distribute it to
  individuals and organisations according to their
  different needs