DVSwitch + AllStarLink + Echolink On a Raspberry Pi Zero 2W

Step  1
Open Google Play Store on your Android phone and search for DVSwitch Mobile.
Install the app and open DVSwitch Mobile once installation completed. 

Step  2
During first time running, the app will ask permission to access microphone, device location, photo, media and files.
Please allow access for all of them to run the app without any issue.

Step  3
Once open the app will show Unregistered under Dialer menu.

Step  4
Touch on Status tab and it will show the node is Not registered and Not connected.

Step  5
Touch on Config tab and you will see some default Macro settings

Step  6
Touch on Accounts tab, IAX2 EMPTY profile would be selected by default.

Step  7
Touch on the selected IAX2 EMPTY profile

Step  8
In the Hostname please type the IP address of your node (Pi Zero 2W) and leave the default Port to 4569

Step  9
Type iaxclient in the Username field

Step  10
Type the same password you used in iax.conf file in the Password field. Please refer to Section 1, Step 113 for details.

Step  11
In the CallerID field please type your Call Sign, say for example AB1XYZ

Step  12
Leave the Caller Number field empty and type your AllStarLink node number in the Node field. Say for example node 12345

Step  13
Leave the other settings as it is and touch Save button. Then it will take you to the previous screen as below.

Step  14
Now touch the back button / symbol and you will see the Dialer page with your AllStarLink node number in the dialer field.
In my case it was showing 53015, which is my AllStarLink node number.

Step  15
At this stage touch on Status tab and you will see Registration is showing Registered but Not connected.

Step  16
Go back to Dialer menu and touch Send button where your node number already populated. Then you will see the app is connecting to the node (Pi Zero 2W) and allow you to connect to any AllStarLink node number. You will hear the audio announcement by node and it will show as below In Transmit.

Step  17
Type *3 and the node number that you would like to connect and have a QSO then touch Send button. Once the node is connected then touch and hold the PTT button to start transmission. The PTT button will turn RED color as below.

Step 18
Once you release the PTT and start receiving the audio from other nodes, you can touch the Status menu and you can see the node has some RX and TX data. This confirms you have successfully installed and configured DVSwitch mobile app working with AllStarLink node. Once you finish QSO, you can disconnect from other node by sending *1 and the node number.

Additional information
There is a list of command available in AllStarLink website. Specifically how to connect to Echolink nodes and how to connect to Parrot nodes for testing purposes.

Next section will be the guide to install and configure DVSwitch server along with already installed AllStarLink and Echolink on the same node (Pi Zero 2W).