On a DIAL AllStar node with EchoLink configured, an incoming Echolink user's transmit is interrupted after twenty seconds on every transmission.  A local key-up resets the timer and the remote station's transmission resumes.  At the time of disconnect I see this in the verbose asterisk console output every time:

    -- <DAHDI/pseudo-960886400> Playing 'rpt/node' (language 'en')
    -- <DAHDI/pseudo-960886400> Playing 'digits/4' (language 'en')
    -- <DAHDI/pseudo-960886400> Playing 'digits/2' (language 'en')
    -- <DAHDI/pseudo-960886400> Playing 'digits/2' (language 'en')
    -- <DAHDI/pseudo-960886400> Playing 'digits/6' (language 'en')
    -- <DAHDI/pseudo-960886400> Playing 'digits/9' (language 'en')
    -- <DAHDI/pseudo-960886400> Playing 'rpt/timeout' (language 'en')
    -- Hungup 'DAHDI/pseudo-960886400'

We've been unable to locate the setting (if there is one) that would cause DAHDI to play rpt/timeout.
Where should we be looking?

Thanks

Larry
HB9EYQ