Nortel Norstar T-Series phones  also now known as 7000 series digital telephones were originally released as the "Business Series Terminals" or BST line These phones are a feature-rich portfolio with enhanced capabilities that provide telephony solutions for a broad landscape of users  from Business Communications Manager or BCM users  to Avaya IP Office with Nortel Norstar digital cards  to high-volume call positions and executives  to low-intensive users and small workgroups