Avaya SIP Software 4.0 for 1200 Series Manual de usuario Pagina 23

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Chapter 4: Overview
Introduction
This chapter describes the hardware and software features of the
Avaya 1200 Series IP
Deskphones and provides a brief overview of Session Initiation Protocol (SIP). In this
document, Avaya 1200 Series IP Deskphones are referred to as IP Deskphones.
SIP overview
Session Initiation Protocol (SIP) is a signaling protocol used for establishing multimedia
sessions in an Internet Protocol (IP) network.
SIP
is a text-based protocol similar to HTTP and SMTP. With the introduction of SIP to IP
Deskphones, telephony integrates easily with other Internet services. SIP allows the
convergence of voice and multimedia.
Avaya 1200 Series IP Deskphones with SIP Software
The
Avaya 1200 Series IP Deskphones connect to an IP network using an Ethernet connection.
All voice and signaling information is converted into IP packets and sent across the network.
IP Deskphones can be ordered with UNIStim software installed or with SIP software installed.
UNIStim software and SIP software use the same hardware, but the order number of an IP
Deskphone with UNIStim software is different from the order number of an IP Deskphone with
SIP software.
If you have an IP Deskphone with UNIStim software, you can convert the software to SIP
software. To download the most recent version of SIP software, see
Download the SIP software
to the provisioning server on page 34.
SIP Software for Avaya 1200 Series IP Deskphones-Administration November 2012 23
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