In asynchronous transfer mode (ATM), the specification of all characteristics of a connection negotiated between a source endpoint and an ATM network. Traffic parameters are descriptions of the traffic characteristics of a source endpoint, including peak cell rate (PCR), sustainable cell rate (SCR), maximum burst size (MBS), maximum frame size (MFS), and minimum cell rate (MCR). A traffic descriptor is the entire set of traffic parameters associated with a source endpoint. See also ATM, endpoint, MBS, MCR, MFS, PCR, SCR, and source.
An agreement between a customer and network provider that stipulates a certain type of channel allotted to the customer. It may also guarantee a minimum amount of bandwidth as well as quality of service (QoS) parameters such as a guaranteed maximum delay between packets. Network outage may be part of the contract, which states the guaranteed uptime as well as compensation if the network is down beyond a certain length of time. See QoS.