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network condition.
Change
Password
A 4-digit number password is required to enter the built-in
web page of CG-410 or to upgrade the firmware by FTP.
You can change the password by this tab.
0000
6.4. Configuring the PSTN Interface
6.4.1. PSTN Volume
You can control the volume of the voice that passes through the PSTN interface by adjusting the
configuration menu. The bigger the number of item is, the bigger the volume is. (The default setting at
factory reset is recommended.)
6.4.2. Configuring the CPTD (Call Progress Tone Detection)
Your CG-410 can detect various ‘call progress tones’ from PSTN, such as dial tone, ring back tone or
busy tone by using the CPTD (Call Progress Tone Detection) functionality. It can release the PSTN
line automatically when it detects the busy tone or congestion tone that can be heard after a call is
released.
You should configure the parameters of each call progress tone that matches your country’s
specifications, since the parameters are not the same in many countries. By default, the CG-410
provides the pre-programmed specifications of call progress tones in over 30 countries; Argentina,
Australia, Austria, Canada, Chile, China, Denmark, Finland, Germany, Hong Kong, Japan, Korea,
Mexico, Netherlands, Saudi Arabia, Singapore, Sweden, Turkey, U.K., U.S. and France, Venezuela,
Philippines, Bulgaria, Egypt, Iraq, Lebanon, Russia, Syria, user’s defined call congress tone etc. If you
use the CG-410 in one of those countries, you can just the select the country on the “System
Configuration / PSTN” configuration web page. (Various specifications of call progress tones are
defined in “VARIOUS TONES USED IN NATIONAL NETWORKS” ITU-T Recommendation E.180
Supplement 2.)
Otherwise, you should configure the parameters of call progress tones manually by selecting “User
Defined” menu on the “Select Country” drop down list. Even if you are in one of those countries, you
may have to configure the CG-410 manually. This is because the tone after a released call may not be
a ‘busy tone’ or a ‘congestion tone’ in some countries. (By default, CG-410 releases the PSTN line
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