In order to use the app proceed as follows:

- Open the app

- Enter your username (this is your e-mail address) and password.

- Click on login.

Once you are logged in, you will see the start screen of the app.

The app is divided into 5 major sections:

1. User settings

2. Search bar

3. Telephone menu

4. Telephone / Dial field

5. App bar

Now more on each section:

Here you will find the following features:

• log in and log off from the app

• select the device you would like to call with

• add devices you would like to call with (C2D target)

• switch between your devices

You can make calls via the app, via your extension i.e. the device connected to your extension (e.g. desktop telephone) or another target e.g. your mobile phone.

This feature is called Click to Dial (C2D).

You select the target via which you want to make calls and all your calls will be made via this target.

When the app menu is closed, you can see your name and the device you are calling with in left top corner.

- If you would like to add a new external number you would like to call with, click on your name in the upper left corner.

You will be taken to the App menu.

- Click on the + sign in the "Call with" section.

An input field opens up. Here you can now enter your new external number, e.g. a hotel room telephone from the hotel room you are currently staying in.
 
- Enter a name and telephone number for the external number.

- Click on Save.

The City Hotel number appears now in the list of devices you can make calls with.

- To make a call via the hotel room number, click on the City Hotel entry.

The hotel room telephone is now selected as your device to make calls.

Search the pbx and your private phone book. Search results are clustered.

The telephone menu of the mobile app is devided into three tabs:

• Telephone

• History

• Settings

Telephone

Initiate calls.

Find more information on how to make calls in the chapter Telephone - how to make calls.

Here you will find all app parameters, e.g. the following features:

• Call forwarding

• Language

• Call Through number

• Register phone number

• App permissions

• Imprint

• Data protection

• GTC

• Dial here the telephone number you wish to call

• Use the DTMF field to enter the telephone number you wish to call or to enter conference room PINs

You will find two functions in the app bar: a shortcut for switching between your call forwarding profiles under the arrow symbol and next to it the DND function.

In case of an incoming call, a pop up with caller's information as phone number or extension and name will appear.

- Accept or decline the call.

You can put a call on hold by clicking on the menu button in the green area and selecting the hold button  in the green area and selecting the hold button .

Here you will find all app parameters, e.g. the following features:

• Call forwarding

• Language

• Register phone number

• App permissions

• Imprint

• Data protection

• GTC

Here you can activate and deactivate your call forwarding profiles. If you have created your own call forwarding profiles via the Web App or the Desktop App, they will appear on the start screen of the Mobile App under the arrow button.

The Mobile App allows you to manage and edit only the default call forwarding profile. You can create your personal call forwarding profiles as well as new call forwarding profiles via the Web App or the Desktop App.

As soon as you change a call forwarding condition in the Mobile App, you change the condition of the default profile. This automatically activates the default profile.

- To activate a personal call forwarding profile, click on the arrow icon    in the App Bar.

The list of your call forwarding profiles appears at the bottom of the display.

- Select your desired profile.

- By clicking on the profile, it gets activated.

You have the possibility to register your mobile phone number in the app. If the phone number is registered, a call can be continued via the GSM connection if the Internet connection is poor.

The mobile phone number is also used for the call through function.

The app needs some permissions to work correctly. Here you can view and assign them individually.

Here you will find the following information on the app:

• Imprint

• Data protection

• GTC

Before you can join a conference, you need to subscribe to this conference.

- Enter the conference name or extension in the search bar.

You will see results in the active search, grouped by type and in alphabetic order.

Here is this example we are looking the "Audio Conference" with the extension number 388.

The conference room was found and needs now to be subscribed to.

- Click on the entry conference.

- Enter the conference PIN number.

- Click on subscribe.

Once you are subscribed, you will see conference as a new tab in the menu of the app and you will see the conference you have subscribed to in the conference list.

For more information on the conference, click on the entry. A pop up will open.

- Open the conference tab.

You will see the conference room that you have already subscribed to.

- Click on the entry. A call to the conference room will be initiated.

As soon as other participants join the conference, you will see them in the list of conference participants.

Following features are available in a conference:

• mute or unmute participants

• exclude a participant from the conference

• invite participants

• make the conference public or private

- To access the conference features, wipe the conference participant's name to the left.

Depending on in what way you participate in a conference, as a participant or presenter, you have different control possibilities over the conference.

You can also start an ad-hoc conference as soon as you are in an active call.

- Click on the Add button.

In the meantime, your active call will be put on hold.

The directory opens.

- Enter the name of the contact you want to add to the ad hoc conference in the search field.

- Click the entry to start a call.

The participant will be called.

Once the second participant answers the call, you can connect both participants to the ad-hoc conference.

- Swipe over the first participant to see the call features.

- Click the Conference button .

The two participants are now connected in the ad-hoc conference and you can use all the features of a conference.