ZyXEL Communications IES-1248-51A, User Manual

Page: 325 / 654

Chapter 45 VoIP
IES-1248-51V User’s Guide
325
DSP Profile This field displays the name of the Digital Signal Processing
(DSP) profile currently used on the port for voice calls. You
can also select another DSP profile for this port. Configure
DSP profiles in the VoIP > DSP Profile screen.
Data Profile This field displays the name of the Digital Signal Processing
(DSP) profile currently used on the port for voiceband data
(fax or modem) calls. See
Section 45.1.8 on page 323 .
If this field is blank, the IES-1248-51V uses the set DSP
Profile for the calls. You can also select another DSP profile.
Configure DSP profiles in the VoIP > DSP Profile screen.
Impedance This field displays the default voice band AC impedance
currently used on the port.
If you do not want to use the default impedance, select the
required AC impedance of the DSL port in the VoIP > VoIP
Port Setup > Port Edit screen.
Voice TX Gain
Voice RX Gain
Tx: This is the amount of gain (increase in signal power/
volume) applied on the voice signal received from the
subscriber and transmitted to the MGC.
Rx: This is the amount of gain (increase in signal power/
volume) applied on the voice signal received from the MGC
and transmitted to the subscriber.
These are measured in decibel and the range can be from -20
to 20.
A negative value decreases the signal power/volume.
Data TX Gain
Data RX Gain
Tx: This is the amount of gain (increase in signal power)
applied on the voiceband data (fax or modem) signal received
from the subscriber and transmitted to the MGC.
Rx: This is the amount of gain (increase in signal power)
applied on the voiceband data (fax or modem) signal received
from the MGC and transmitted to the subscriber.
These are measured in decibel and the range can be from -20
to 20.
A negative value decreases the signal power.
Copy From Select this to prepare to copy the specified port’s DSP
Profile, Tx/Rx Gain and Impedance settings to one or
more ports. Click the Copy button to complete the procedure.
Apply Click this to save your changes.
Copy Click this to copy the DSP Profile, Tx/Rx Gain and
Impedance settings from the selected port to one or more
ports. You must first select a port’s Copy From field.
Cancel Click this to return the fields in this screen to their last-saved
values.
Table 112 VoIP > VoIP Port Setup > Port View
LABEL DESCRIPTION