[VOIPSEC] Not quite a VoIP security question...

[Jason Ross]

Hi

As mentioned in the subject it isn't really a VOIP security question.
Anyway, I have a customer who is concerned about vulnerabilities
originating from the ISDN services connected to their PBXs. As
telecommunications security profesionals does anyone know of any attacks
and or tools and products in this space?

So far I have not been able to find a great deal of information, hope
someone can provide some assistance.

Jason