(1) A group of ports identified by the common carrier with a single DTE address. The network directs incoming calls to the first available port, using a sequential search (rotary) technique.
(2) A logical name used to group one or more ports (network devices or interfaces) of the same network type that can be used to reach a given end-user destination. For example, if multiple ATM adapters in the IBM Content Manager VideoCharger Server complex are connected to the same ATM networks, these adapters can be configured under the same port group. The controller selects ports as necessary to balance the load.