# MSC - Erlang

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Descriptions

The Erlang statistics of MSC is collected on two bases: Service or Trunk Group.

•Service Erlang: The total duration (unit is hour) of a certain type of call that took place in the system on an hour basis.

•Trunk Group Erlang: The total duration (unit is hour) of all calls that routed out (in) from each trunk group on an hour basis.

There is a chart of stacked line for each Erlang statistics as described below:

Erlang | X-coordinate | Y-coordinate (unit=hour)

Service

No. of the time period

Duration of trunk to mobile calls

Duration of trunk to trunk calls

Duration of mobile to mobile calls

Duration of mobile to trunk calls

Duration of mobile originated calls

Duration of mobile terminated calls

Duration of incoming trunk calls

Duration of outgoing trunk calls

Duration of mobile to intelligent peripheral calls

Duration of trunk to intelligent peripheral calls

Duration of intelligent peripheral terminated calls

Trunk group | No. of the time period | Duration of all calls on the specified trunk group

There are two searching tools on the navigator bar: bases type and date range. Operator can select bases type (Service or Trunk Group), select up to the last 30 days to sort out the specific statistics profile. When Trunk Group is selected, a text box will be displayed for entering one or multiple TG number (separated by ",") for the following chart generation. The Print logo is for printing out this statistics page.

Functionalities

•MSC Erlang statistics on service and trunk group basis.

3.2.4