VCO/4K Technical Bulletins

• ISDN Generic Software Users (V4.x and V.5x)

• Customers Using Integrated SS7 V5.x Software

• Integrated SS7 V3.x and V5.x Customers

• CCITT Integrated SS7 V3.0 Customers

• ANSI Integrated SS7 V3.0 Customers

• Generic V 4.2 PUN 24 Customers Upgrading to V4.2FSR00 PUN25

• Generic V4.2 Customers

• Generic V3.3, V4.0, V4.1, and V4.2 Customers

• Generic V4.2 Customers

• VCO/80 Customers With Earthquake Zone Requirements

• Integrated SS7 Customers

• Integrated SS7 Customers

• Japanese ISDN Customers Upgrading to V4.0 FSR02

• Customers with 4XT1 Cards

• Customers Upgrading to Generic Release V4.0 FSR01

• Customers Running Generic V3.3

• Integrated SS7 Service Technicians

• Customers with VCO/80 DC Systems Dual Power Feed Option

• All customers (Re: Safety Cautions)

• Customers Using or Upgrading to Generic V3.3 FSR03 and Higher