returned. A location can also be specified so that a circuit is returned only if it uses the specified network element and is in the specified location Locations All circuits which run between the specified sites are returned Alternative name Circuits may be assigned an alternative name. The user can query for all circuits which carry a specified alternative name OSS for Telecom Networks Table 10.3 Filters for circuit queries. Filter Description Proposed/reviewed/confirmed Provides circuits with a particular status. One might be able to suggest greater than or equal to proposed, which would mean proposed, reviewed or confirmed In service This would include circuits with the status of Commissioned or In Service Out of service Includes circuits with the status of Out of Service, Cancelled, Pending or Delete Show bearers Includes the parents (or first-level bearers) of each circuit returned in a query Check for alarms on displayed circuit Current alarm status is given (if available) on each circuit returned in a query. Table 10.4 Circuit records showing circuit details. Information item Description Circuit name Circuit name Bearer Bearers on the circuit Tributary Tributary number Customer The customer to which the circuit provides service Service ID Service identification for the circuit Status Proposed/Reviewed/Confirmed/etc. Alarm Whether or not the circuit has recently been affected by an alarm Table 10.5 Circuit capacity - bearers and ports. Circuit detail Description Spare bearer capacity The unused bandwidth that is available for a selected circuit. This is the difference between the speed (in Mbps or Gbps) specified in the bearer record and the total speed of that bearer's tributaries Spare configured ports These are the ports that are free for use on the terminating network element equipment of the circuit Table 10.6 Circuit capacity details. Information item Description Circuit Circuit name Service ID Service order identification number Speed (Mbps) Speed of the nominated circuit/bearer Speed of tributaries