ioned IPSec and MPLS VPNs from a single interface. Large service providers often have several geographically disparate networks, each of which normally has its own autonomous routing area. Using the support for multi-network VPN management, all of these autonomous systems can be managed 23 Some of the vendors whose equipment is supported are Cisco, Juniper and Riverstone. 6 Service Provisioning and Activation from a single interface to deliver end-to-end services. Thus, if a service provider sells services to a particular enterprise in several countries using its network in different countries, the enterprise customer can still enjoy a consistent service level across national borders and communicate with a single reporting and billing centre. Support for customer self-provisioning is becoming common, although whether that support is useful depends on whether the provisioning system has end-to-end interfaces across the network. Service Activator's web interface allows enterprise customers to order, view and modify services without any involvement by service provider staff. The interface can be customised for web-based customer self- management and call centres. The interface can also be customised for branding so that the customers of the service provider are constantly exposed to their service provider's brand. The service provider can modify the service settings so as to limit which features of which services can be altered by the customer. This is essential as it may not be appropriate for a customer to have complete visibility into, or control over, the network service parameters. A software toolkit for Service Activator allows the service provider or implemen- tor, such as a system integrator, to integrate with other OSS platforms. For example, a service provider may desire that billing, fault or performance measurement data received from other OSS applications be displayed in a single interface. The latest device control features available are: 1. Support for a driver for Cisco Layer 2 devices. 2. Enhancemen