AddPac VoiceFinder AP1100 Manual de usuario descargar pdf (Pagina 128)

APOS Quick Operation Guide Voice over IP

AddPac Technology Proprietary & Documentation 130 - 128

simulation data, over multicast or unicast network services. RTP provides

such services as payload type identification, sequence numbering,

time-stamping, and delivery monitoring to real-time applications.

SIP

The Session Initiation Protocol (SIP) is an Internet Engineering Task Force

(IETF) standard protocol for initiating an interactive user session that

involves multimedia elements such as video, voice, chat, gaming, and

virtual reality.

Like HTTP or SMTP, SIP works in the Application layer of the Open Systems

Interconnection (OSI) communications model. The Application layer is

the level responsible for ensuring that communication is possible. SIP

can establish multimedia sessions or Internet telephony calls, and

modify, or terminate them. The protocol can also invite participants to

unicast or multicast sessions that do not necessarily involve the initiator.

Because the SIP supports name mapping and redirection services, it

makes it possible for users to initiate and receive communications and

services from any location, and for networks to identify the users

whatever they are. SIP is a request-response protocol, dealing with

requests from clients and responses from servers. Participants are

identified by SIP URLs. Requests can be sent through any transport

protocol, such as UDP, SCTP, or TCP. SIP determines the end system to

be used for the session, the communication media and media

parameters, and the called party's desire to engage in the

communication. Once these are assured, SIP establishes call

parameters at either end of the communication, and handles call

transfer and termination. The Session Initiation Protocol is specified in

IETF Request for Comments [RFC] 2543.

SmartViewer

The real-time monitoring, statistical data search and management GUI

based software developed by AddPac Technology for AP-GK1000, AP-

GK2000, AP-GK3000 models.

SNMP

Simple Network Management Protocol. Network management

protocol used almost exclusively in TCP/IP networks. SNMP provides a

means to monitor and control network devices, and to manage

configurations, statistics collection, performance, and security. Refer to:

SGMP, SNMP2.

A TDM physical transmission standard consisting of two twisted wire pairs

and related equipment capable of carrying a 1.544 Mbps DS-1 signal.

Term often used interchangeably with DS-1. Refer to: AMI, B8ZS, DS-1.

TCP/IP

Transmission Control Protocol/Internet Protocol, The protocol suit

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