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VoIP Glossary

Posted: Mon Apr 14, 2008 9:47 am
by VoIP Admin
ATA is an acronym for Analog Telephone Adapter. Normally associated with a VoIP service. An ATA allows you to insert a normal telephone into a network. The ATA gets configured with your VoIP details.

CLI is an acronym for Caller Line ID. Basically the caller ID of the remote caller.

A codec is a device or program capable of encoding and/or decoding a digital data stream or signal. The word codec may be a combination of any of the following: 'compressor-decompressor', 'coder-decoder', or 'compression/decompression algorithm'. It is needed to convert the Data packets to Voice packets or vice versa.

DID is an acronym for Direct In Dial or Direct Inward Dialing, basically a DID is needed if you want to recieve inbound calls from the PSTN network.

Fax to Email, Fax2Email,
Fax to email is simply a term used for a service that can accept a standard fax (a piece of paper with writing on), convert it into a picture or an electronic document and then send that document to an email address. With a fax to email service you are assigned a telephone number to give out as your fax number. If a fax is sent to that number you will receive it in your email inbox.

FXO - Foreign eXchange Office
To put it simply these ports are used for PSTN fall back. Using the V880 as the example, if we imagined the V880 to have 8 FXS and 1 FXO port that will only allow 1 port for PSTN fall back in the event that VoIP is down.

FXS - Foreign eXchange Subscriber
Using the Netcomm V880 as an example it has 8 FXS ports, you can either connect 8 analog phones to the unit or interconnect it with the existing PBX.

Inbound Call
Calls that are incoming to your DID, mobile, or PSTN line.

IP Phone,
IP Phones are telephones that are used with a VoIP Service. They use the IP (Internet Protocol) to work on a standard network. These phones can be plugged directly into a computer network. They are Internet phones. They are physical hardware as opposed to a softphone.

Outbound Call
Calls that you make to the PSTN/IP network.

The public switched telephone network (PSTN) is the network of the world's public circuit-switched telephone networks, in much the same way that the Internet is the network of the world's public IP-based packet-switched networks. Originally a network of fixed-line analog telephone systems, the PSTN is now almost entirely digital, and now includes mobile as well as fixed telephones.

SIP, Session Initiation Protocol
SIP is a protocol developed by the IETF MMUSIC Working Group and proposed standard for setting up sessions between one or more clients. It is currently the leading signaling protocol for Voice over IP, gradually replacing H.323 in this role. Basically it is a language that VoIP phones use to talk to each other.

SIP Phone
See SIP. A SIP Phone is a telephone that uses the SIP protocol. A SIP phone is used with a VoIP Service. A SIP phone can be a hardware IP phone or a softphone.

Softphone, Software Phone
Soft is short for software, a program that runs on your computer. A softphone is just a piece of computer software that acts as a telephone. Normally used with a headphone and microphone headset and associated with a VoIP service.

USB Phone
A USB Phone (Universal Serial Bus) is a telephone that plugs into your computers USB socket. A USB phone is used with a VoIP Service.

VoIP, Voice over IP
VOIP is an acronym for Voice Over Internet Protocol. The word VoIP is the term that is used to differentiate standard telephone calls from telephone calls that are made and received over the Internet. Internet phone calls travel over the Internet. The Internet uses a language called IP (Internet Protocol) so VoIP simply means transmitting a voice using the Internet.

VoIP Service Provider (VSP)
A company that can offer a Voice over Internet Protocol to you.

Voice Mail, Voicemail
A telephone answering machine basically. With a VoIP service your voicemail messages are stored on the internet and can be played back to you or sent to you in an email as a sound file attachment.

Posted: Mon Apr 14, 2008 9:52 am
by VoIP Admin
If there is anything i have missed or anyone wants to be added let me know.

Thats all i can think of at this stage.

Posted: Mon Apr 14, 2008 10:07 am
by sable
FXO & FXS Ports

Posted: Mon Apr 14, 2008 10:23 am
by VoIP Admin
Added :)

Had to keep it simple but if you need more information you can use the link below.

Posted: Wed Apr 16, 2008 11:53 am
by VoIP Admin
Original link is located below (thanks Tafkam) if you need more information.

The one i posted above is all you should need to know to understand and use VoIP. ... terms.html