Configuring the IMSG

This chapter explains how to configure the IMSG. Topics include:

• Enabling the BSG Service Package on the PIC or DPC
• Setting Up System Processes
• Configuring the Services PIC or DPC for the BSG
• Configuring the Services PIC or DPC for the BGF
• Configuring NAT Pools
• Assigning a NAT Pool
• Configuring Virtual Interfaces
• Creating a Rule That Specifies the NAT Pool to Use on a Virtual BGF
• Specifying the Order in Which the BGF Processes Rules
• Configuring a Stateful Firewall
• Configuring a Service Set
• Configuring a Virtual BGF
• Creating BSG Instances
• Configuring a Gateway Controller
• Using Regular Expressions to Match Incoming SIP Messages to Policies
• Configuring a New Transaction Policy
• Using New Transaction Policies to Route SIP Requests
• Configuring Message Manipulation Rules
• Using New Transaction Policies to Manipulate SIP Headers or to Reject SIP Messages
• Configuring Call Admission Control (CAC)
• Configuring New Transaction Policy Sets
• Configuring a New Call Usage Policy
• Configuring New Call Usage Policy Sets
• Attaching Policies to a Service Point
• Configuring Routing of VPN Calls
• Configuring SIP Timers
• Configuring QoS
• Configuring Firewall and Intrusion Prevention System (IPS) Services for SIP Signaling Traffic
• Verifying the IMSG Configuration