Which credentials should I enter on registration screen?

SIP client application can make calls in 2 modes:

  1. Via SIP Server (PBX)
  2. Directly between clients

Mode (1) is most popular. It allows to make free outgoing calls between clients from different networks.Also it allows to call PSTN/GSM phone numbers.Create account on SIPprovider’s web page and enter received credentials: user name (extension), password, domain in application.Here is list of web pages which allows to create free

https://www.antisip.com/sip-antisip-com-register/register.html
https://serweb.iptel.org/user/reg/index.php
https://www.nonoh.net/signup
https://www.callcentric.com/login/

Mode (2) doesn’t require to use any SIP servers.

To start app in this mode and make calls:

1. Enter as ‘Username’ – any text/numbers without spaces (for example: 111, test…).
Password – leave empty
Domain – leave empty
Select check box “Disable registration”
Press button “Register”.

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2. In menu popup app displays URI, which is required to enter on remote device in same subnet to dial this application.

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3. Enter on remote side and press ‘StartCall’

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