136 / Tracking your incoming callsModular ICS 6.0 System Coordinator Guide P0992640 03Using external Voice mailIf you subscribe to a voice message service outside youroffice, you can access that service through your Norstarsystem. Your installer or customer service representativeprograms your Norstar telephone to indicate when you have avoice message waiting on a particular line.To find out if your external voice message service works withNorstar, or if you have any problems with your service, contactyour voice message service provider.