NANO 2 - Glossary of Terms
User Manual v2.7
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Appendix-A: Glossary of Terms
ATA
Analog Telephone Adapter: Used to connect a standard telephone to a high-speed modem
to facilitate VoIP and/or fax calls over the Internet.
DHCP
Short for Dynamic Host Configuration Protocol, a protocol for assigning dynamic IP
addresses to devices on a network. With dynamic addressing, a device can have a different
IP address every time it connects to the network. DHCP also supports a mix of static and
dynamic IP addresses.
DID
Direct Inward Dial. A specially configured phone line from the telephone company that allows
for dialing inside a company directly without having to go through an attendant. A DID line
cannot be used for outdial operation since there is no dial tone offered. However, it can be
configured so an outside caller can reach an inside extension with a 7-digit number through
the phone company's central office.
DNS
The Domain Name System is the system that translates Internet domain names into IP
numbers. A "DNS Server" is a server that performs this kind of translation.
FXO
In telecommunications, a Foreign Exchange Office, or FXO, is a telephone signaling
interface that receives POTS, or "plain old telephone service".
FXS
Foreign Exchange Station is the interface on a VoIP device for connecting directly to
phones, faxes, and CO ports on PBXs or key telephone systems.
GATEWAY
A network point that acts as an entrance to another network.
IP ADDRESS
Every machine that is on a network (a local network, or the network of the Internet) has a
unique IP number [four sets of numbers divided by period with up to three numbers in each
set. (i.e. 192.168.0.100)] - If a machine does not have an IP address it cannot be on a
network.
IVR
Interactive Voice Response: A system to automatically manage incoming calls, IVR can link
phone callers (voice and/or touchtone) with a computer database. It can accept a question,
access the company's database and provide a caller with the information they are seeking. It
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