| 802.1p
802.1Q |
802.1Q defines a layer 2 frame structure that supports VLAN identification and a QoS mechanism usually referred to as 802.1p, but the content of 802.1p is now incorporated in 802.1D. |
| ARP |
Address Resolution Protocol, used for example, to verify that the IP address provided by the DHCP server is not in use by another IP Telephone. |
| CELP |
Code-excited linear-predictive; voice compression requiring only 16 kbps of bandwidth. |
| CLAN |
Control LAN, type of Gatekeeper circuit pack. |
| DHCP |
Dynamic Host Configuration Protocol, an IETF protocol used to automate IP Address allocation and management. |
| DiffServ |
Differentiated Services, an IP-based QoS mechanism. |
| DNS |
Domain Name System, an IETF standard for ASCII strings to represent IP addresses. |
| Gate-keeper |
H.323 application that performs essential control, administrative, and managerial functions in the media server. Sometimes called CLAN in Avaya documents. |
| HTTP |
Hypertext Transfer Protocol, used to request and transmit pages on the World Wide Web. |
| IETF |
Internet Engineering Task Force, the organization that produces standards for communications on the internet. |
| LAN |
Local Area Network. |
| LDAP |
Lightweight Directory Access Protocol, an IETF standard for database organization and query exchange. |
| MAC |
Media Access Control, ID of an endpoint. |
| NAPT |
Network Address Port Translation. |
| NAT |
Network Address Translation. |
| PHP |
Hypertext Preprocessor, software used to assist in the format and display of web pages. |
| PSTN |
Public Switched Telephone Network, the network used for traditional telephony. |
| QoS |
Quality of Service, used to refer to a number of mechanisms intended to improve audio quality over packet-based networks. |
| RSVP |
Resource ReSerVation Protocol, used by hosts to request resource reservations throughout a network. |
| RTCP |
RTP Control Protocol, monitors quality of the RTP services and can provide real-time information to users of an RTP service. |
| RTP |
Real-time Transport Protocol, provides end-to-end services for real-time data (such as voice over IP). |
| SIP |
Session Initiation Protocol; an alternative to H.323 for VoIP signaling. |
| TCP/IP |
Transmission Control Protocol/Internet Protocol, a network-layer protocol used on LANs and internets. |
| TFTP |
Trivial File Transfer Protocol, used to provide downloading of upgrade scripts and application files to the IP Telephones. |
| UDP |
User Datagram Protocol, a connectionless transport-layer protocol. |
| VLAN |
Virtual LAN. |
| VoIP |
Voice over IP, a class of technology for sending audio data and signaling over LANs. |
| WML |
Wireless Markup Language, used by the 4620 web browser to communicate with WML servers. |
