User`s guide

186 Dialogic
®
1000 and 2000 Media Gateway Series User’s Guide
Call Progress Tones
• Ringback – Call a valid extension not in use. Caution: Make sure that this extension is not
forwarded on “no answer” and that it will ring until answered.
Learn button
Specifies that the Media Gateway will automatically learn the tone. Used when the frequency
and timing information of a call progress tone are unknown. For more information on using the
Learn feature, see Section 4.2.2, “Learning the Characteristics of Unknown Call Progress
Tones”, on page 186.
Validate Only button
Specifies that the Media Gateway will validate a call progress tone whose frequency and
timing information are known. For more information on using the Validate only feature, see
Section 4.2.5, “Validating Call Progress Tones”, on page 189.
4.2.2 Learning the Characteristics of Unknown Call Progress
Tones
If the frequency and timing information of a call progress tone is unknown, use the Learn button to
have the Media Gateway automatically learn the tone. This is accomplished by selecting the tone,
entering a destination address where the desired call progress tone can be heard and selecting
Learn. The unit will then call each destination address and analyze the tones on the line. The result
will be a tone definition for the specified tone event that can be added to the tone table.
Follow these steps to learn the timing and frequency characteristics of unknown call progress tones.
1. For each call progress tone that is to be learned, determine how the tone can be generated by
the system.
2. Verify that the system will generate the desired call progress tone by dialing that destination
address from an extension and listening to verify the tone.
3. Navigate to the Learn Tone Web page (see Figure 21), select the desired tones, and enter the
destination addresses for the tones to be learned.
4. Click on the Learn button.
5. Wait for the Learn Tone Results Web page to be displayed. A progress page is displayed
showing progress messages as the system proceeds.
6. Select the newly learned tones to be added to the tone definition table and click on the Apply
button.
4.2.3 Learn Tone Progress
Once the Learn button has been selected, the Media Gateway will start the process of acquiring the
call progress tone characteristics. A Learn Tone Progress page will automatically appear while the
Gateway is acquiring the tones and progress messages will be posted.