Yealink SIP-T19 E2 T4 Series, Administrator'S Manual

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Appendix
873
Appendix
Appendix A: Glossary
802.1x
--an IEEE Standard for port-based Network Access Control (PNAC). It is a part of the IEEE
802.1 group of networking protocols. It provides an authentication mechanism to devices
wishing to attach to a LAN or WLAN.
ACS
(Auto Configuration server)
--
responsible for auto-configuration of the Central Processing
Element (CPE).
Cryptographic Key
--a piece of variable data that is fed as input into a cryptographic algorithm
to perform operations such as encryption and decryption, or signing and verification.
DHCP
(Dynamic Host Configuration Protocol)
--
built on a client-server model, where designated
DHCP server hosts allocate network addresses and deliver configuration parameters to
dynamically configured hosts.
DHCP Option--
can be configured for specific values and enabled for assignment and
distribution to DHCP clients based on server, scope, class or client-specific levels.
DNS
(Domain Name System)
--
a hierarchical distributed naming system for computers, services,
or any resource connected to the Internet or a private network.
EAP-MD5
(Extensible Authentication Protocol- Message Digest Algorithm 5 )
--
only provides
authentication of the EAP peer to the EAP server but not mutual authentication.
EAP-TLS
(Extensible Authentication Protocol-Transport Layer Security)
–
provides for mutual
authentication, integrity-protected cipher suite negotiation between two endpoints.
PEAP-MSCHAPv2
(Protected Extensible Authentication Protocol-Microsoft Challenge
Handshake Authentication Protocol version 2)
–
provides for mutual authentication, but does not
require a client certificate on the IP phone.
FAC
(Feature Access Code)
--
special patterns of characters that are dialed from a phone keypad
to invoke particular features.
HTTP
(Hypertext Transfer Protocol)
--
used to request and transmit data on the World Wide
Web.
HTTPS
(Hypertext Transfer Protocol over Secure Socket Layer)
--
a widely-used communications
protocol for secure communication over a network.
IEEE
(Institute of Electrical and Electronics Engineers)
--
a non-profit professional association
headquartered in New York City that is dedicated to advancing technological innovation and
excellence.
LAN
(Local Area Network)
--
used to interconnects network devices in a limited area such as a