Internet Telephony Gateway User's Manual

SIP Voice Gateway User’s Manual

Preface

LED

Light Emitting Diode

PBX

Private Branch Exchange

PSTN

Public Switched Telephone Network

RTP

Real-Time Transport

SIP

Session Initialization Protocol

TCID

Telephony Channel Identifier

TFTP

Trivial File Transfer Protocol

TIM

Telephony Interface Modules

TNV

Telephone Network Voltage

UDP

User Datagram Protocol

UTP

Unshielded Twisted Pair

VAD

Voice Activity Detection

WAN

Wide Area Network

Notation Conventions

Throughout this guide, different type styles and characters are used. These serve a variety of pur-

poses as described below:

Convention Description

boldface

Commands and keywords are in

boldface.

italic Arguments for which you supply values are in italics.

courier Messages that VIP CLI displays are in plain courier font.

[ ] Elements in square brackets are optional.

{ x | y | z } Alternative but required elements are grouped in braces ({ }) and sepa-

rated by vertical bars ( | ).

[ x | y | z ] Optional alternative keywords are grouped in brackets ([ ]) and separated

by vertical bars ( | ).

string A nonquoted set of characters. Do not use quotation marks around the

string or the string will include the quotation marks.