Internet Enhanced Service (IES) is a routed connectivity service where the subscriber communicates with an IP router interface to send and receive Internet traffic. An IES has one or more logical IP routing interfaces each with a SAP which acts as the access point to the subscriber’s network. IES allows customer-facing IP interfaces to participate in the same routing instance used for service network core routing connectivity. IES services require that the IP addressing scheme used by the subscriber be unique between other provider addressing schemes and potentially the entire Internet.
While IES is part of the routing domain, the usable IP address space may be limited. This allows a portion of the service provider address space to be reserved for service IP provisioning, and be administered by a separate but subordinate address authority.
IP interfaces defined within the context of an IES service must have a SAP associated as the uplink access point to the subscriber network. Multiple IES services are created to segregate subscriber-owned IP interfaces.
The IES service provides Internet connectivity. Other features include:
multiple IES services are created to separate customer-owned IP interfaces
more than one IES service can be created for a single customer ID
more than one IP interface can be created within a single IES service ID
All IP interfaces created within an IES service ID belong to the same customer.
These features apply to the 7750 SR and 7450 ESS.
See the 7450 ESS, 7750 SR, and VSR Triple Play Service Delivery Architecture Guide for information about how subscriber group-interfaces function in the Routed Central Office model.