The OECB allows you to configure up to four separate Virtual Local Area Networks (VLAN) to help manage your deployment. For example, you might want separate networks for certain departments or locations. Each VLAN connects to its own uniquely defined network interface and SIP interface, which allows you to create separate networks. Beginning with the PCZ3.1.0 release, the system creates one network called "ecb" and one SIP interface with the Realm ID set to "ecb" when you perform the initial configuration. The system also populates the Realm ID parameter in the Session Agent, LDAP, and ENUM configurations with "ecb."

See "Support for Multiple VLANs", "Add Multiple VLANs", "Network Interface Configuration", "Configure a Network Interface", and "Configure SIP config" in the Administrator's Guide.