# Global System Statistics

Global statistics aggregate call metrics across your entire TMedia system, regardless of NAP or protocol. These provide a system-wide view of traffic, licensing, and configuration status.

***

## Real-Time Call Metrics

These metrics show the current state of calls on the system:

| Statistic                | Units     | Description                              |
| ------------------------ | --------- | ---------------------------------------- |
| **Active Calls**         | Calls     | Currently connected/active call count    |
| **Call Legs**            | Call Legs | Total call legs (typically 2 per call)   |
| **Non-Active Call Legs** | Call Legs | Call legs in setup/teardown (calculated) |
| **Incoming Call Legs**   | Call Legs | Current inbound call legs                |
| **Outgoing Call Legs**   | Call Legs | Current outbound call legs               |

***

## Call License Usage

| Statistic              | Units     | Description                                      |
| ---------------------- | --------- | ------------------------------------------------ |
| **Call License Usage** | Call Legs | Current call legs measured against license limit |

{% hint style="info" %}
Call License Usage tracks your active call legs relative to your licensed session capacity. Alerts trigger when usage approaches or exceeds the limit.
{% endhint %}

***

## Call Counters

Cumulative counters that increment with each call. MaaS calculates the delta between polling intervals to show calls per interval.

### Total Call Counters

| Statistic           | Direction | Description                      |
| ------------------- | --------- | -------------------------------- |
| Call Count          | All       | Total calls since system restart |
| Incoming Call Count | Incoming  | Inbound calls since restart      |
| Outgoing Call Count | Outgoing  | Outbound calls since restart     |

### Accepted Call Counters

Calls that were successfully accepted by the system:

| Statistic           | Direction | Description                 |
| ------------------- | --------- | --------------------------- |
| Accepted Call Count | All       | Successfully accepted calls |
| Incoming Accepted   | Incoming  | Inbound accepted calls      |
| Outgoing Accepted   | Outgoing  | Outbound accepted calls     |

### Answered Call Counters

Calls that reached the answered/connected state:

| Statistic           | Direction | Description              |
| ------------------- | --------- | ------------------------ |
| Answered Call Count | All       | Connected/answered calls |
| Incoming Answered   | Incoming  | Inbound answered calls   |
| Outgoing Answered   | Outgoing  | Outbound answered calls  |

***

## Calls Per Second (CPS)

CPS metrics are calculated from the cumulative counters, showing the rate of calls over time.

### Overall CPS

| Statistic    | Direction | Description               |
| ------------ | --------- | ------------------------- |
| **CPS**      | All       | Overall call attempt rate |
| Incoming CPS | Incoming  | Inbound call rate         |
| Outgoing CPS | Outgoing  | Outbound call rate        |

### Accepted CPS

| Statistic             | Direction | Description            |
| --------------------- | --------- | ---------------------- |
| Accepted CPS          | All       | Rate of accepted calls |
| Incoming Accepted CPS | Incoming  | Inbound accepted rate  |
| Outgoing Accepted CPS | Outgoing  | Outbound accepted rate |

### Answered CPS

| Statistic             | Direction | Description            |
| --------------------- | --------- | ---------------------- |
| Answered CPS          | All       | Rate of answered calls |
| Incoming Answered CPS | Incoming  | Inbound answered rate  |
| Outgoing Answered CPS | Outgoing  | Outbound answered rate |

{% hint style="info" %}
CPS metrics help identify peak traffic periods, sudden spikes, and trends over time — useful for capacity planning and spotting issues.
{% endhint %}

***

## Configuration Backup

MaaS monitors the active configuration backup status on your system and alerts on changes or failures.

| Statistic                       | Type   | Description                                              |
| ------------------------------- | ------ | -------------------------------------------------------- |
| **Active Configuration Backup** | Status | Current state of the active configuration backup process |

***

## Alerts

### High Severity

| Alert                    | Condition                                  | Description                                                  |
| ------------------------ | ------------------------------------------ | ------------------------------------------------------------ |
| MaaS Call Limit Exceeded | Active call legs exceed MaaS service limit | Call volume has surpassed the MaaS monitoring service limit  |
| License Limit in Danger  | Call legs approaching licensed capacity    | Active call legs are critically close to the license maximum |

### Warning Severity

| Alert                       | Condition                               | Description                                              |
| --------------------------- | --------------------------------------- | -------------------------------------------------------- |
| Nearing Call License Limit  | Call legs over 80% of licensed capacity | Active call legs are approaching the license maximum     |
| Backup Configuration Failed | Configuration backup process failed     | The system was unable to complete a configuration backup |

### Information Severity

| Alert                               | Condition                               | Description                                                                                                                              |
| ----------------------------------- | --------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------- |
| MaaS Call Limit over 90%            | Active call legs over 90% of MaaS limit | Call volume is approaching the MaaS monitoring service limit                                                                             |
| Active Configuration Changed        | Active configuration hash changed       | A change to the active configuration was detected. **Fires only on an actual config change** — previously could false-fire on heartbeat. |
| Configuration Successfully Received | Configuration backup completed          | A configuration backup was successfully received (nightly)                                                                               |

***

## Understanding the Metrics

<details>

<summary>Active Calls vs Call Legs</summary>

* **Active Calls**: The number of currently connected conversations
* **Call Legs**: Each call typically has 2 legs (inbound + outbound), so Call Legs ≈ Active Calls × 2
* **Non-Active Call Legs**: Calls in setup, alerting, or teardown phases

</details>

<details>

<summary>Accepted vs Answered</summary>

* **Accepted**: The system accepted the call attempt (passed initial validation)
* **Answered**: The call reached a connected state (far end picked up)

The ratio of Answered to Accepted can indicate network quality issues or routing problems.

</details>

<details>

<summary>Using CPS for Capacity Planning</summary>

CPS metrics help identify:

* Peak traffic periods for capacity planning
* Sudden traffic spikes that may indicate issues
* Traffic trends over time when viewed historically

</details>

<details>

<summary>MaaS Call Limit vs License Limit</summary>

* **MaaS Call Limit**: The maximum number of call legs the MaaS monitoring service is configured to track. This is a service-level limit, not a hardware limit.
* **License Limit**: The maximum number of concurrent call legs your TMedia system is licensed to handle.

These are independent limits — you may hit one before the other depending on your deployment size and service plan.

</details>


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