The Telephony performance object provides counters for monitoring telephone-communication activity on a computer running Windows 2000.
| Counter Name | Description | Counter Type |
|---|---|---|
| Active Lines | Shows the number of telephone or integrated services digital network (ISDN) lines serviced by the computer that are currently in use by applications. | PERF_COUNTER_RAWCOUNT |
| Active Telephones | Shows the number of telephone devices (telephones or speaker phones) that are currently in use by applications. | PERF_COUNTER_RAWCOUNT |
| Client Apps | Shows the number of applications that are currently using telephony services. | PERF_COUNTER_RAWCOUNT |
| Current Incoming Calls | Shows the number of incoming calls that are currently being serviced by the computer. | PERF_COUNTER_RAWCOUNT |
| Current Outgoing Calls | Shows the number of outgoing calls that are currently being serviced by the computer. | PERF_COUNTER_RAWCOUNT |
| Incoming Calls/sec | Shows the rate at which incoming calls are answered by this computer. | PERF_COUNTER_COUNTER |
| Lines | Shows the number of telephone lines serviced by the computer. | PERF_COUNTER_RAWCOUNT |
| Outgoing Calls/sec | Shows the rate at which outgoing calls are made by this computer. | PERF_COUNTER_COUNTER |
| Telephone Devices | Shows the number of telephone devices (telephones or speaker phones) serviced by the computer. | PERF_COUNTER_RAWCOUNT |