> Services > CCM > CCM ISDN - Basic Rate Interface Service

CCM ISDN - Basic Rate Interface Service

The Cisco CallManager (CCM) ISDN - Basic Rate Interface service monitors the utilization of Basic Rate Interface (BRI) trunks.

Service Type


Instances on a Device


Supported Systems/Applications

Cisco® CallManager Versions 4.x

Device Class

Server - Windows

Monitoring Probe

Windows probe

Scan Interval

15 minutes

Properties Queried and Calculations Performed

Namespace root\cimv2
WMI Class Win32_PerfRawData_CiscoCM_CiscoCallManager
WMI Property 0 BRIChannelsActive
WMI Property 1 BRISpansInService

Status Details

Status Detail


Active BRI Voice Channels

The number of active calls on the BRI trunk.

BRI Spans in Service

The number of available BRI trunk spans.

BRI Utilization (%)

A calculated percentage of the BRI utilization:

Active BRI Voice Channels * 100 / BRI Spans in Service * 2