Avaya 4600 Manuel D’Utilisation

SIP 

Session Initiation Protocol. An IETF standard protocol for IP communication. SIP 
enables IP telephony gateways, client endpoints, PBXs, and other communication 
systems or devices to communicate with each other. SIP mainly addresses the call 
setup and tear down mechanisms of sessions and is independent of the transmission 
of media streams between the caller and the party called. SIP is an alternative to 
H.323 for VoIP signaling. 

SNMP 

Simple Network Management Protocol. The Internet standard protocol, defined in 
STD 15, RFC 1157, developed to manage nodes on an IP network. 

SNTP 

Simple Network Time Protocol. An adaptation of the Network Time Protocol used to 
synchronize computer clocks in the internet.

Supplicant 

An entity at one end of a point-to-point LAN segment that is being authenticated by 
an authenticator at the other end.

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.

TLS 

Transport Layer Security, an enhancement of Secure Sockets Layer (SSL). TLS is 
compatible with SSL 3.0 and allows for privacy and data integrity between two 
communicating applications.

TLV 

Type-Length-Value elements transmitted and received as part of Link Layer 
Discovery Protocol (LLDP).

UDP 

User Datagram Protocol, a connectionless transport-layer protocol.

Unnamed 
Registration 

Registration with Avaya Communication Manager by an IP telephone with no 
extension. Unnamed registration is typically used to limit outgoing calling.

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.