Login API
The game server uses /api2/viv_signin.php to sign in to the Vivox service and obtain an auth_token.
- A successful 
viv_signin.phpcall returns anauth_tokenin the response. - The 
auth_tokenauthenticates subsequence web requests. 
Use the following parameters to perform a sign in action:
- userid - The Vivox username of the user to sign in.
 - pwd - The password associated with the userid.
 
The following example displays the URL structure to use when you call viv_signin.php:
https://mt1s.www.vivox.com/api2/viv_signin.php?userid=Vivox-RuneRun-dev-Admin&pwd=aKDnh2FIyHeyzwBd
The following code displays the response for this example.
<response xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.vivox.com" xsi:schemaLocation="/xsd/response.xsd">
    <level0>
        <status>OK</status>
        <body>
            <status>Ok</status>
            <sip_qval>1</sip_qval>
            <loginname>Vivox-RuneRun-dev-Admin</loginname>
            <displayname/>
            <account_id>161</account_id>
            <auth_token>
                Vivox-RuneRun-dev-Admin:1540215742:3b0182741a3ebd92487a640d9e16d50e:10.5.255.168
            </auth_token>
            <sip_acct>sip:Vivox-RuneRun-dev-Admin@mt1s.vivox.com</sip_acct>
            <sip_uri>sip:Vivox-RuneRun-dev-Admin@mt1s.vivox.com</sip_uri>
            <sip_displayname/>
        </body>
    </level0>
</response>