me service order identification number speed sum of the speeds of its child circuits - in other words, the total speed of its tribu- taries whether or not the speed of the tributaries is more than 80% of the bearer speed - indicating whether the bearer is close to being overloaded circuit name of any child circuits or tributaries sequence number of each child in the bearer terminating equipment at the A and B ends of the circuit port and card names at the A and B ends of the circuit. It is also possible to zoom up to bearer/parent circuits and to zoom down to tributary/child circuits. From a circuit query, it is possible to begin editing the circuit - refer to the above circuit editing screen - or to open details on an NE in the circuit (see Figure 11.30). Ring cross connections are an essential component of circuits, as explained in Chapter 2. CCM is equipped with a text-based screen for defining cross connections (see Figure 11.31). Defining a ring cross connection requires the location at which the ring is to be entered, the type of NE at which the ring is to be entered, the starting point of the cross connection, the index/instance of the NE at which the ring is to be entered, the starting point of the cross connection, the port which indicates the starting point of the cross connection and the cross connection type. The same information must again be given for the endpoint of the cross connection. The direction that will be followed around the ring must also be specified. In editing a circuit, it may be necessary to define a route for the circuit through a sub-network. A sub-network is a collection of circuits that are connected by appro- priate NEs. It is, literally, a network that is a subset of some entire network of a car- rier. It is possible to provision a route through a sub-network so that the route forms part of a circuit (see Figure 11.32). 11 Configuration Management Network E Elements Clarity Network Elements Costed Items APOT DSX3 Status Customer Alternate Names In Service Location AUSTTX65HA1 I