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Use the Codec Entry - Modem window to configure options for a selected Codec Entry that specify how to handle modem tones when they are detected.

On the

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 main screen, go to Configuration > Profile Management > Category: Media Profiles > Codec Entry > Modem or
All > Profiles > Media > Codec Entry > Modem

The Modem window opens. Select a Codec Entry from the drop-down list to view and edit its modem parameters. Be aware that not all codec entries are based on codecs that support modem parameters.

Figure 1: Codec Entry - Modem Window

Use the following table to edit modem parameters and then click Save.

Table 1: Codec Entry - Modem Parameters

Parameter

Description

Failure Handling

Specifies the behavior when a modem tone is detected but the treatment fails for any reason. The behavior can be:

  • Disconnect—Release the call.
  • Continue (default)—Continue to process the call.

Tone Treatment

Specifies the treatment taken when modem tones are detected, which can be:

  • None (default)—Do nothing when modem tones are detected.
  • Notify Peer—Notify the peer when modem tones are detected.
  • Disconnect—Disconnect the call when modem tones are detected.
  • Fallback To G711—Fall back to G.711 when modem tones are detected.
  • Apply Fax Treatment—Treat the modem tone as a fax tone, and apply the fax treatment for the selected codec.
Honor Tone Detection

Enable this option for G.711 to G.711 transcoded calls to cause the SBC to initiate a re-invite upon modem tone detection when the modem Tone Treatment configuration is Fallback To G711.

When disabled, the SBC ignores the modem tone.

  • Disable (default)
  • Enable

This option only applies to a G.711 codec without silence suppression.

Note:

For G.711 calls, Notify Peer and Disconnect require a compression resource to be allocated.



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