Dsp Management - ZyXEL Communications X6004 User Manual

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H A P T E R
11.1 Overview
This chapter shows you how to install additional Digital Signal Processing (DSP) modules in
the X6004 and how to manage the X6004's DSP resources.
The X6004 uses DSP modules to convert analog audio to digital signals, and vice versa.
The X6004 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 X6004 can handle
simultaneously. See the product specification in
X6004's DSP modules.
This chapter shows you how to install and uninstall additional DSP modules in the X6004. It
also discusses how to manage the DSP resources on the X6004.
11.1.1 What You Can Do in the DSP Management Screen
Use the DSP Management screen to manage the DSP channels available on the X6004. See
Section 11.3 on page
11.1.2 What You Need To Know About DSP
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 X6004 must encode the
outgoing analog audio while simultaneously decoding the incoming digital audio.

DSP Management

The X6004 automatically detects the number of DSP channels available for processing
telephone conversations. The number of available DSP channels is based on the DSP modules
installed on the X6004.
The X6004 automatically assigns DSP channels to service the analog phone connections (FXS
ports) available on the X6004. It also automatically assigns DSP channels to the analog
connections to the PSTN (FXO ports).
The remaining DSP channels is are shared among all services which require DSP resources on
the X6004.
X6004 User's Guide
DSP Management
155.
Chapter 36 on page 381 for details about the
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