Hi sorry to be a pain, but...
Could you please tell me what ADS stands for?
I know ISDN is Integrated Services Digital Network. I thought ADS might stand for Automatic Distribution System or Asymmetric Digital Subscriber. But I'm not sure. It's concerning the Newspaper Advertising Industry so I thought the ADS might stand for Advertiser?
Any help will be greatly appreciated.
Bobby

Would you provide more info on the context?

Archaeology Data Service
Astrophysics Data System
American Dialect Society
American Driving Society
Automated Directives System
Australian Diabetes Society