$socket = stream_socket_client("tcp://x.x.x.x:$port");
        if($socket)
        {
            echo "Connected to socket, sending authentication request.\n";
            // Prepare authentication request
            $authenticationRequest = "Action: Login\r\n";
            $authenticationRequest .= "Username: $username\r\n";
            $authenticationRequest .= "Secret: $password\r\n";
            $authenticationRequest .= "Events: off\r\n\r\n";
            // Send authentication request
            $authenticate = stream_socket_sendto($socket, $authenticationRequest);
            if($authenticate > 0)
            {
                // Wait for server response
                usleep(200000);
                // Read server response
                $authenticateResponse = fread($socket, 4096);
                var_dump($authenticateResponse);
                // Check if authentication was successful
                if(strpos($authenticateResponse, 'Success') !== false)
                {
                    echo "Authenticated to Asterisk Manager Inteface. Initiating call.\n";

                    // Prepare originate request
                    $originateRequest = "Action: Originate\r\n";
                    $originateRequest .= "Channel: local/$internalPhoneline\r\n";
//                    $originateRequest .= "Callerid: click 2 Call\r\n";
                    $originateRequest .= "Exten: $target\r\n";
                    $originateRequest .= "Context: $context\r\n";
                    $originateRequest .= "Priority: 1\r\n";
                    $originateRequest .= "Async: yes\r\n\r\n";

[2021-08-13 11:27:38] WARNING[17467] chan_sip.c: Purely numeric hostname (87787529540), and not a peer--rejecting!