How to catch the Mc address of the user into radius databases,

Hi Users, please for give in my english, Can anyone let me, How to catch the Mac Address of the user and their public ip , that need to insert in radius database , which we having the radamin adnd dialadmin fro radius adminstrator tools, please help me -- Thanks and Regards with cheers Sunkara Ravi Prakash (Voip Developer) Hyperion Technology www.hyperion-tech.com +91-9985077535