SDSL/2B1Q flavors by brand name

• Copper Mountain
• Lucent
• Nokia
• Newbridge

SDSL/2B1Q flavors by technical classification

• Flavor A
• Flavor B
• ATM over CAP

Our own flavor of SDSL/2B1Q

• Specification
• Justification

Hypothetical

• Flavor H
• IDSL as a flavor of SDSL/2B1Q