ZyXEL Communications X2002, User Manual

Page: 186 / 562

Chapter 11 DSP Management
X2002 User’s Guide
186
DSP Management
The X2002 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 X2002.
The X2002 automatically assigns DSP channels to service the analog phone
connections (FXS ports) available on the X2002. 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 X2002.
11.1.3 Before You Begin
Consider the following when making decisions on purchasing additional DSP
modules or assigning the DSP channels on the X2002:
• A typical conversation uses two channels.
• A conference call uses one channel per participant.
• Unassigned DSP channels are shared among all services which require DSP
resources.
11.2 Installing and Removing DSP Modules
This section describes how to install and remove the X2002’s DSP modules.
11.2.1 How to Install a DSP Module
Take the following steps to install a second Digital Signal Processor in your X2002.
1
Ensure the power is off and all cables are disconnected. Lay the X2002 upside
down on a flat, dry surface. The DSP hatch is located on the base of the X2002.
2
Unscrew and remove the DSP hatch screw.
3
Remove the DSP hatch cover.
4
Insert the DSP module’s contacts into the connector socket at an angle, as shown
in the figure.