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SS7 GW - FAQ

     

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    No ring back on incoming calls

    By default FreeSWITCH does not play "ringing" for incoming calls when in the progress media state.

     

    FIX:

    Add the following line to the dialplan after determining that you will accept the call (i.e. before bridging the call to a SIP endpoint)

    <action application="set" data="ringback=%(<on time>, <off time>, <freq 1>, <freq 2>)"/>

    http://www.itu.int/ITU-T/inr/forms/files/tones-0203.pdf

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    Incoming calls that are not answered are hung up after 60 seconds

    FreeSWITCH dialplan runs an internal timer (call_timeout) that hangs up an unanswered call after 60 seconds.  This can interfere with ISUP timer T9 testing which is 90-180 seconds.

     

    FIX:

    To increase the FreeSWITCH call_timeout timer add the following line to the dialplan before you run the bridge application:

    <action application="set" data="call_timeout=200"/>

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