ZyXEL Communications X2002, User Manual

Page: 185 / 562

X2002 User’s Guide
185
C
H A P T E R
11
DSP Management
11.1 Overview
This chapter shows you how to install additional Digital Signal Processing (DSP)
modules in the X2002 and how to manage the X2002’s DSP resources.
The X2002 uses DSP modules to convert analog audio to digital signals, and vice
versa.
The X2002 is equipped with an onboard DSP module and two extensible DSP slots
by default. You can upgrade the existing DSP module with one or two that can
process more channels. You can also install a second module to increase the
number of calls the X2002 can handle simultaneously. See the product
specification in
Chapter 39 on page 501 for details about the X2002’s DSP
modules.
This chapter shows you how to install and uninstall additional DSP modules in the
X2002. It also discusses how to manage the DSP resources on the X2002.
11.1.1 What You Can Do in this Chapter
Use the DSP Management screen to manage the DSP channels available on the
X2002. See Section 11.3 on page 188 .
11.1.2 What You Need To Know
The following terms and concepts may help you as you read through the chapter.
DSP Channels
DSP modules are classified by the number of channels they are capable of
processing. A normal phone conversation takes up to two channels, since the
X2002 must encode the outgoing analog audio while simultaneously decoding the
incoming digital audio.