Epygi QX series User Manual

Hidden Pages for QX Advanced Configuration
Enable FXO: Enables the corresponding FXO line.
• Wait for dialtone: Enables checking the availability of the connected PSTN line by detecting
voice activity (dial tone) on the line. If enabled, the system will proceed with placing an outgoing
PSTN call only if the required voice activity level is detected on the line. The voice activity and
the timeout to wait for it are set in the fxocfg.cgi. If disabled, the system will send DTMFs
regardless of whether or not the PSTN line is working.
• DSP Echo Cancellation: Enables the DSP echo canceller for the FXO line. The echo canceller
uses adaptive linear filtering for linear processing of the echo that can be followed by non-linear
processing depending on the residual signal level.
o Echo Tail: Maximum anticipated length of echo signals. The setting value is expressed in
samples with the sampling rate of 8000 samples/sec (8 samples = 1 ms) and is used in the
adaptive liner filter.
o Echo NLP Diff: Minimum value for the Echo NLP Diff setting, which is the difference in
echo level before and after linear processing. If the difference in echo level is greater than
the specified value, the echo signals will be further processed by the non-linear processor
to remove the residual echo signal.
o Echo NLP Shift: Number of times to shift right the residual signal to decrease the echo
signal level. This is equivalent to multiplying the specified number by 6 dB and deducting it
from the residual signal strength. Note that this setting is used only if the difference in echo
level is greater than the value specified by the Echo NLP Diff setting.
Please Note: For the instructions on how to determine the correct values for echo
parameters appropriate to your QX setup, please see the troubleshooting guide Echo
Cancellation on QX, which is available in the Support Portal of the www.epygi.com
.
• Current Detection: Enables checking the availability of the connected PSTN line by detecting
current on the line. If enabled, the system will proceed with placing an outgoing PSTN call only
if the required current is detected on the line. The timeout to wait for the current is set in the
fxocfg.cgi. If disabled, the system will send DTMFs regardless of whether or not the PSTN line
is working.
• Enable Parallel Handset Detection: This setting is used when a PSTN line is shared between
an FXO port and а parallel-connected phone(s). The checkbox allows the system to detect
whether a parallel-connected phone is using the line and prevent placing an outgoing call if the
line is in use. If enabled, the system will place an outgoing PSTN call only if the line is not in
use. If disabled, the system will place an outgoing PSTN call if the level of the current on the
line is sufficient for making a call.
• Enable Pulse Dialing: Enables pulse dialing on the line. If enabled, the dialed number will be
sent to the PSTN using pulse signaling. If disabled, tone signaling will be used.
• Wait for Next Ring Before Accept: Clicking this checkbox enables the FXO agent to go
offhook only when port is ringing. It intends to minimize the risk of going offhook when the
remote side already dropped the call.
Please Note: Regardless of the dialing method selected for the FXO line, numbers from
devices connected to QX FXS ports (phones, modems or other terminal equipment) should be
dialed using DTMF dialing.
• Caller ID: This drop-down list allows selecting the standard of Caller ID transmission used on
the PSTN line. The default option for this setting configures the system to use the standard
selected in the fxocfg.cgi.
Revision 1.0 14 20-Feb-15

Epygi QX series Specifications

General

Brand	Epygi
Model	QX series
Category	PBX
Language	English