> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/telecom-references/other-pages/caf-caf-call-leg-events.md).

# CAF: Caf Call Leg Events

### Events received from call legs by the CTBCAFCallFlow object

The call flow object (as well as its behaviors) receive the following events from its call legs. Please refer to the header file ITBCAFCallFlow\.hpp for more information about each of these functions:

#### Initialization and termination of call leg objects:

```
- OnInitIncomingCallLeg()
- OnInitOutgoingCallLeg()
- OnLegFreed()
```

#### Controlling call flow:

```
- OnCallLegAccepted()
- OnCallLegAlerting()
- OnCallLegAnswered()
- OnCallLegSuppInfo()
- OnCallLegTerminatingIndication()
- OnCallLegTerminated()
- OnLegTerminated()
- OnCallLegTransferRequest()
- OnCallLegTransferProgress()
- OnCallLegTransferResponse()
```

#### Controlling media flow between two call legs:

```
- OnLegJoinDone()
- OnLegUnjoinDone()
```

#### Re-synchronization with [toolpack\_engine](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/misc/toolpack-engine/README.md):

```
- OnSyncDone()
- OnSyncLost()
```

#### Timers or custom events:

```
- OnLegEvent()
```

#### Errors detected by [toolpack\_engine](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/misc/toolpack-engine/README.md):

```
- OnLegError()
```

**Playing/recording audio**

```
- OnStreamPlayingStarted()
- OnStreamPlayingDone()
- OnStreamRecordingStarted()
- OnStreamRecordingDone()
```

#### Digits (tone) and events:

```
- OnDigitPlayingDone()
- OnDigitCollected()
- OnEventPlayingDone()
- OnEventCollected()
```

#### Controlling profile or stats:

```
- OnLegProfileChanged()
- OnLegStatsUpdated()
```


---

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