asterisk users - Aug 2004 - detect telco voicemail stutter-tone

AFAIK, this is not possible - but I'll throw it out there anyhow...

I subscribe to telco voicemail, for the event that all my pstn lines are 
in use.

Telco gives me a stutter-tone dialtone when I have a message waiting.

Can a Zap card detect this stutter-tone and perform some action?

I'm using TDM400P+FXOs and SIP devices.

Thanks