> 2.8.4 | Further scenarios of outgoing voice calls

> This section comprises the subsections Description, Used AT Commands, Flow Chart, Hints and Example. To move to these subsections please use the Navigation Frame or the appropriate buttons on the toolbar.

> 2.8.4.1 | Description

> The following scenario of outgoing voice calls considers all AT commands used by the calling party and the called party and, in addition, describes the handling of a waiting call.
> When a third subscriber calls one of the other two (while the called subscriber has not enabled Call waiting) the call from the third subscriber is not signaled to the called subscriber.

> 2.8.4.2 | Used AT commands

> Command | Explanation
> ATD | Mobile originated call to dial a number
> ATH | Disconnect existing connection
> ATA | Answer a call

> For further details about the commands see [2].

> 2.8.4.3 | Flow chart

> Figure 49: Further scenarios of outgoing calls 1- part 1
> Figure 50: Further scenarios of outgoing voice calls 1- part 2

> 2.8.4.4 | Hints

> Not applicable.

> 2.8.4.5 | Example

> ***************************************
> Comment: Call handling
> ***************************************
> ***************************************
> Comment: Establish voice call Sub1-->Sub2
> ***************************************
> Subscr 1 Send: ATD<Sub2>;
> ***************************************
> Comment: Sub2: Waiting for RING
> ***************************************
> Subscr 1 Receive: ATD<Sub2>;
> Subscr 2 Receive:
> Subscr 2 Receive: RING
> ***************************************
> Comment: Sub2: Reject waiting call of Sub1
> ***************************************
> Subscr 2 Send: ATH
> Subscr 2 Receive: ATH
> Subscr 2 Receive: OK
> Subscr 1 Receive:
> Subscr 1 Receive: NO CARRIER
> ***************************************
> Comment: Establish voice call Sub1-->Sub2
> ***************************************
> Subscr 1 Send: ATD<Sub2>;
> ***************************************
> Comment: Sub2: Waiting for RING
> ***************************************
> Subscr 1 Receive: ATD<Sub2>;
> Subscr 1 Receive: OK
> Subscr 2 Receive:
> Subscr 2 Receive: RING
> ***************************************
> Comment: Sub2: Accept waiting call of Sub1
> ***************************************
> Subscr 2 Send: ATA
> Subscr 2 Receive: ATA
> Subscr 2 Receive: OK
> ***************************************
> Comment: Establish voice call Sub3-->Sub2 without enabled call waiting
> ***************************************
> Subscr 3 Send: ATD<Sub2>;
> Subscr 3 Receive: ATD<Sub2>;
> Subscr 3 Receive:
> Subscr 3 Receive: BUSY
> ***************************************
> Comment: Disconnect the active call
> ***************************************
> Subscr 1 Send: ATH
> Subscr 1 Receive: ATH
> Subscr 1 Receive: OK
> Subscr 2 Receive:
> Subscr 2 Receive: NO CARRIER