Measurement hour. The starting time, using 24-hour clock of the hour, during which the data is recorded. Data is listed beginning with the most recently completed hour in the preceding 24-hour interval. For additional details, see the Avaya Aura® Communication Manager Hardware Description and Reference.

Measured minute. (Last-Hour Report) The end-time of the 3-minute interval for which the measurement is taken. The data takes the form hh:mm, where hh is the hour and mm is the end-time for the 3-minute interval.

Busiest-Interval report. The date and end-time of the 3-minute interval for which the data is collected. The data takes the form MM/dd/mm:hh, where MM is the month, dd is the day, hh is the hour, and mm is end of the 3-minute interval.

Suggested actions: If the 75 percent maximum limit is exceeded, take one or more of the following steps to lower call processing occupancy:

• If the users do not get a dial tone immediately, users must wait 10 to 15 seconds before going on-hook and off-hook again.

• If the system is part of a private network and receives a large amount of traffic from another system in the private network, consider reconfiguring the network.

• Check the administration translation and verify all digital sets, administered with display modules, actually have display modules. For sets without display modules, change the administration translations to indicate that the digital sets are without a display module.

• Check the hardware error log for high levels of maintenance activity.

System Management occupancy. The time taken by lower priority activities, such as administration and maintenance command processing, maintenance activity, error logging, and Light-Emitting Diode (LED) audits. For additional details, see the Avaya Aura® Communication Manager Hardware Description and Reference.

Idle occupancy. The amount of time the processor is unused. Several factors drive down this number including the following:

• A large offered load increases CP occupancy.

• A switch with many stations and trunks requires a high level of background maintenance and increases SM occupancy.

• Frequent demand testing or administration increases SM occupancy.

These factors may reduce the idle occupancy to almost 0 percent during several 3-minute intervals. On a heavily loaded configuration with frequent demand testing, the idle occupancy may drop to low levels for longer periods (perhaps 1–2 hours). These situations are normal and do not indicate a problem with the configuration.

However, a lightly-loaded configuration with few stations translated and little demand maintenance or administration should not experience long periods of low idle occupancy (less than 15 percent). If this is the case, a problem is likely.

Total calls. The total number of calls connected during the listed hour. Calls are counted in the time interval the calls are answered and not in the time interval the calls are dropped. Therefore, a call that starts in one time interval and ends in another is counted only in the time interval where it originates.

Tandem calls. The number of trunk-to-trunk calls connected during the last hour.

Total connections. The number of call attempts made during the measurement interval. The following occurrences count as an attempt:

• A user lifts the station handset and hangs up before dialing any digits (off-hooks).

• A user lifts the station handset, dials the destination number, but the far end is busy, and the user hangs up (no answer).

• A user lifts the station handset, dials the destination number, the far end is busy.

• A user places a call, and the dialed number answers.

• A user adds a second party onto the call.

• An incoming trunk seizure.

• Maintenance requests an outgoing trunk be seized.

• Tandem calls (either pnet or public network) result in 2 attempts, but only one total call.

• AUDIX audits of message waiting lamps.

• AUDIX Leave Word Calling activations.

Intercom attempts. This field includes the sum of two types of calls. The first type is extension-to-extension calls on the same configuration. The second type is partially completed calls where a local extension goes off-hook and then hangs up before the call is answered. The second type of call includes includes both busy and unanswered calls.

Incoming attempts. The number of incoming trunk seizures from public network facilities.

Outgoing attempts. The number of outgoing trunk seizures made from public network facilities.