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Ozeki Phone System

Making an outbound call

Learn how you initiate a phone call. With this example you will send an HTTP Request to the installed API Extension for starting a Call, and the API will read a text for the Caller.
Please write the following code into the right file at your web server:
Using this example you will be able to send a request to Ozeki Phone System XE through OPS SDK for making and managing an outgoing call. First of all, please login and connect to the API Extension. After that, use the CreateCall method, subscribe the necessary events and start your call.

Next: Log calls

Example code coming soon...
	public void MakeCall(string dialed, string apiExtension, string callerId, string callerDisplayName, string url, string errorUrl)
		var serverUri = "http://ozekixepbx.ip:7780/";
		var queryString =
			"?Command=Call" +
			"&Dialed=" + dialed +
			"&ApiExtension=" + apiExtension +
			"&CallerId=" + callerId +
			"&CallerDisplayName=" + callerDisplayName +
			"&Url=" + url +
			"&ErrorUrl=" + errorUrl;
		byte[] data = new ASCIIEncoding().GetBytes(queryString);
		// Prepare web request...
		var request = (HttpWebRequest)WebRequest.Create(serverUri);
		request.Method = "POST";
		request.ContentType = "application/x-www-form-urlencoded";
		request.ContentLength = data.Length;
		Stream newStream = request.GetRequestStream();
		// Send the data.
		newStream.Write(data, 0, data.Length);
	class MakeCallController < ApplicationController
	  require 'net/http'
	  protect_from_forgery except: :index
	  # In routes.rb you need to set the following routing rule
	  # get '/make_call' => 'make_call#index'
	  def index
	    ops_ip_address_with_port = "ozekixepbx.ip:7780"
	    api_extension = "9999"
	    dialed = "2000"
	    caller_id = "1000"
	    caller_display_name = "Tibi"
	    url = "http://yoursite.com:3000/handle_call_response"
	    error_url = "http://yoursite.com:3000/handle_call_error"
	    query = "http://#{ops_ip_address_with_port}/?Command=Call&Dialed=#{dialed}&ApiExtension=#{api_extension}&CallerId=#{caller_id}&CallerDisplayName=#{URI::encode(caller_display_name)}&Url=#{URI::encode(url)}&ErrorUrl=#{URI::encode(error_url)}"
	    uri = URI query
	    response = Net::HTTP.get uri 
	    render :text => '<b>Response: </b>' + response
	 	$url = "http://yoursite.com/HandleCallResponse.php";
	 	$errorUrl = "http://yoursite.com/HandleCallError.php";
	    $server = "http://ozekixepbx.ip:7780"; 
	    $commandParams['Command'] = "Call"; 
	    $commandParams['Dialed'] = "883";
	    $commandParams['ApiExtension'] = "9000";
	    $commandParams['CallerId'] = "777";
	    $commandParams['CallerDisplayName'] = "Joe";
	    $commandParams['Url'] = $url;
	    $commandParams['ErrorUrl'] = $errorUrl;
	    $command = http_build_query($commandParams);
	    $params = array('http' => array('method' => "POST",
	                                    'content' => $command));   
	    $context = stream_context_create($params);     
	    $fp = @fopen($server, 'r', false, $context);
	    echo "Response: ";
	    $response = @stream_get_contents($fp);  
	 	echo $response;
	import urllib
	import urllib.request
	import urllib.response
	import datetime
	from cgi import escape
	def application(environ, start_response):
	    result = ""
	    if(environ["PATH_INFO"] == ''):
	        result = createCall()
	    elif(environ["PATH_INFO"] == '/HandleCallResponse'):
	        result = getOzmlResponse(environ)
	    elif(environ["PATH_INFO"] == '/HandleCallError'):
	        result = callErrorOccured(environ)
	    response_headers = [('Content-type', 'text/plain'), ('Content-Length', str(len(result)))]
	    start_response('200 OK', response_headers)
	    return [result]
	def createCall():    
	    dict = {}
	    dict["Dialed"] = "1001"
	    dict["CallerId"] = "1201"
	    dict["CallerDisplayName"] = "Mr. Test"
	    dict["ApiExtension"] = "9000"
	    dict["Url"] = "http://yoursite.com/HandleCallResponse"
	    dict["ErrorUrl"] = "http://yoursite.com/HandleCallError"
	    opsLocation = "ozekixepbx.ip"
	    opsPort = 7780
	    result = ""
	    requestUrl = "http://{}:{}/?Command=Call&{}".format(opsLocation, opsPort, urllib.parse.urlencode(dict))
	    result += requestUrl
	    request = urllib.request.Request(requestUrl)
	    response = urllib.request.urlopen(request)
	    if(response.status != 200):
	        result += "\r\nThe HTTP Status received indicates errors: {}".format(response.status)
	        return result
	    result += "\r\nCall successfully created."
	    return result
	using System;
	using OPSSDK;
	using OPSSDKCommon.Model.Call;
	using Ozeki.Media.MediaHandlers;
	namespace OPS_QuickStartExample_CSharp
	    class Program
	        static void Main(string[] args)
	            var client = new OpsClient();
	            client.ErrorOccurred += (sender, info) =>
	            if (!client.Login("ozekixepbx.ip", "admin", "12345"))
	            var apiExtension = client.GetAPIExtension("9000");
	            var call = apiExtension.CreateCall("1001");
	            var tts = new TextToSpeech();
	            tts.Stopped += (s, a) => call.HangUp();
	            call.CallErrorOccurred += (sender, e) => Console.WriteLine(e.Item);
	            call.CallStateChanged += (sender, e) =>
	                if (e.Item == CallState.Answered)
	                    tts.AddAndStartText("Hello, this is a test call");
	                else if (e.Item.IsCallEnded())
	Imports OPSSDK
	Imports Ozeki.Media.MediaHandlers
	Imports OPSSDKCommon.Model.Call
	Module Module1
	    Public Sub Main(args As String())
	        Dim client = New OpsClient()
	        AddHandler client.ErrorOccurred, Sub(sender, info)
	                                         End Sub
	        If Not client.Login("ozekixepbx.ip", "admin", "12345") Then
	        End If
	        Dim apiExtension = client.GetAPIExtension("9000")
	        Dim [call] = apiExtension.CreateCall("1001")
	        Dim tts = New TextToSpeech()
	        AddHandler tts.Stopped, Sub(s, ev)
	                                End Sub
	        AddHandler [call].CallErrorOccurred, Sub(sender, e)
	                                             End Sub
	        AddHandler [call].CallStateChanged,
	            Sub(sender, e)
	                If e.Item = CallState.Answered Then
	                    tts.AddAndStartText("Hello, this is a test call")
	                ElseIf e.Item.IsCallEnded() Then
	                End If
	            End Sub
	    End Sub
	End Module
	print "Content-Type: text/plain\n\n";
	#You have to add the directory route of perl.exe, and print the content type
	$address = "ozekixepbx.ip:7780"; #ip address of PBX, and the port of HttpAPI (default: 7780)
	$dialedNumber = "1001";
	$apiExtensionId = "9000"; 
	$callerId = "777";
	$callerDisplayName = "Joe";
	$url = "http://yoursite.com/HandleCallResponse.pl";
	$errorUrl = "http://yoursite.com/HandleCallError.pl";
	use LWP::UserAgent;
	$ua = LWP::UserAgent->new;
	# Create and Send request
	$req = HTTP::Request->new(GET => "http://$address/?Command=Call&Dialed=$dialedNumber&ApiExtension=$apiExtensionId&CallerId=$callerId&CallerDisplayName=$callerDisplayName&Url=$url&ErrorUrl=$errorUrl");
	$res = $ua->request($req);
	# Check the result of the request sending
	if ($res->is_success) { print "\n". $res->decoded_content . "\n" }
	else { print "\nError: " . $res->status_line . "\n" }
	package pbxsampleapp;
	import com.sun.net.httpserver.*;
	import java.io.*;
	import java.net.*;
	import java.text.SimpleDateFormat;
	import java.util.*;
	public class MakingAnOutboundCall 
	    public static void main(String[] args)
	            makeCall("5500", "5440", "http://yoursite.com/callresult?action=connected", "http://yoursite.com/callresult?action=error");
	        catch (IOException ex){ System.out.println("Error" + ex.toString());}
	    private static void makeCall(String extension, String dialed, String url, String errorUrl) throws IOException
	        String queryParams = 
	                "command=Call&ApiExtension=" + URLEncoder.encode(extension, "UTF-8")
	                + "&Dialed=" + URLEncoder.encode(dialed, "UTF-8")
	                + "&Url=" + URLEncoder.encode(url, "UTF-8")
	                + "&ErrorUrl=" + URLEncoder.encode(errorUrl, "UTF-8");
	        URL requrl = new URL("http://ozekixepbx.ip:7780/?" + queryParams);
	        URLConnection conn = requrl.openConnection();
	        InputStream input = conn.getInputStream();
	        byte[] b = new byte[input.available()];
	        System.out.println(new String(b));
	    private static void RunHttpServerforCallresult()
	            System.out.println("Starting http server for callresult...");
	            HttpServer server = HttpServer.create(new InetSocketAddress(InetAddress.getByAddress(new byte[] { 0, 0, 0, 0 }), 12345), 0);
	            server.createContext("/callresult", new PbxSampleApp.PBXRequestHandler());
	            System.out.println("http server running on " + server.getAddress().toString());
	        catch (IOException ex){ System.out.println("Error" + ex.toString());}
	<!DOCTYPE html>
		<form action="http://ozekixepbx.ip:7780" method="POST">
			<input type="hidden" name="Command" value="Call">
			<input type="text" name="ApiExtension" value="9999">		
			<input type="text" name="Dialed" value="1001">
			<input type="text" name="CallerId" value="123456789">
			<input type="text" name="CallerDisplayName" value="Joe">
			<input type="hidden" name="Url" value="http://yoursite.com/CallResponse.xml">
			<input type="hidden" name="ErrorUrl" value="http://yoursite.com/CallError.php">
			<input type="submit" value="Make Call">
Code example 1 - Make a call, by sending an HTTP Request to the PBX

Read information about the Request parameters at the following page. Please change the ozekixepbx.ip text to that ip address where the Ozeki Phone System is installed. On the yoursite.com the address should be that where the sample applications are running. The API will get the Request and execute the given OzML commands (that can be found at the Url parameter of the request). In this example, the OzML command looks like this:

	public ActionResult HandleCallResponse(string notificationName, string callLegID, string callee, string apiExtension)
		return Content(
	   "<Response>" +
		   "<Speak>Hello, this is a test call on " + DateTime.Now.ToString("MMMM.dd", CultureInfo.InvariantCulture) + "</Speak>" +
	   "</Response>", "text/xml");
	class HandleCallResponseController < ApplicationController
	  require 'date'
	  require 'time'
	  protect_from_forgery except: :index
	  # In routes.rb you need to set the following routing rule
	  # post '/handle_call_response' => 'handle_call_response#index'
	  # http://yoursite.com:3000/handle_call_response
	  def index
	    receive_time = Date::ABBR_MONTHNAMES[Date.today.month] + ' ' + Date.today.day.to_s 
	    render :xml => '<?xml version="1.0" encoding="UTF-8"?>
	      <Speakd>Hello, this is a test call on ' + receive_time + '</Speak>
		$receiveTime = date("M.d");
		print "<Response>";
			print "<Speak>Hello, this is a test call on $receiveTime</Speak>";
		print "</Response>";
	print "Content-Type: text/plain\n\n";
	#You have to add the directory route of perl.exe, and print the content type
	my($day, $month)=(localtime)[3,4];
	#Send response by print
	'<?xml version="1.0" encoding="UTF-8"?>
		<Speak>Hello, this is a test call on '.$month.'.'.$day.'</Speak>
	def getOzmlResponse(environ):
	    today = datetime.datetime.now();
	    return """<?xml version="1.0" encoding="UTF-8"?>
	            <Speak>Hello, this is a test call on {0}</Speak>
	        </Response>""".format(today.strftime('%B %d'))
	static String HandleResponse(String query, Map<String, String> params)
	    if (query.contains("action=connected")) 
	             return "<?xml version=\"1.0\"?>"
	                    + "<Response>"
	                    + "<Speak>Hello, this is a test call on " 
	                    + new SimpleDateFormat("MM/dd/yyyy HH:mm:ss").format(new Date())
	                    + "!</Speak>"
	                    + "</Response>";
	    else if (query.contains("action=error"))
	          for (Map.Entry<String, String> entry : params.entrySet())
	                String string = entry.getKey();
	                String string1 = entry.getValue();
	                System.out.println(String.format("%s %S", string, string1));   
	    return "";
	static class PBXRequestHandler implements HttpHandler
	    public void handle(HttpExchange httpExchange) throws IOException
	        InputStream inputStream = httpExchange.getRequestBody();
	        byte[] body = new byte[inputStream.available()];
	        String response = "";
	        String query = httpExchange.getRequestURI().getQuery().toLowerCase();
	        if (query.contains("action=connected") || query.contains("action=error"))
	          response =  HandleResponse(query ,parseBody(body));
	        if (response.length()==0 )
	           httpExchange.getResponseHeaders().add("Content-type", "text/html");
	            httpExchange.getResponseHeaders().add("Content-type", "text/xml");
	        httpExchange.sendResponseHeaders(200, response.length());
	        OutputStream os = httpExchange.getResponseBody();
	    private Map<String, String> parseBody(byte[] params) throws UnsupportedEncodingException
	        Map<String, String> query_pairs = new LinkedHashMap<String, String>();
	        String[] pairs = URLDecoder.decode(new String(params), "UTF-8").split("&");
	        String paramname;
	        String value;
	        for (String pair : pairs)
	            int idx = pair.indexOf("=");
	            paramname = pair.substring(0, idx);
	            value = pair.substring(idx + 1);
	            query_pairs.put(paramname, value);
	            System.out.println(String.format("%s: %s", paramname, value));
	        return query_pairs;
	  <Speak>This is a test call</Speak>
Code example 2 - Speak to the Caller, and hang up the line.

The API Extension just say “Hello, this is a test call” sentence to the Caller, and hang up the line. If any errors occur during the call then the ErrorUrl will be requested. For example you can write a simple application on that URL, what will log the errors.

Get the OPSSDK.dll

First you need to add the OPSSDK.dll reference to your project
(You can find OPSSDK.dll at C:\Program Files\Ozeki\Ozeki Phone System\Examples.NET API\OPSSDK.dll).

Login and connect

Create a new instance of OpsClient, and subscribe to the ErrorOccurred event. Your program will communicate with the Ozeki Phone System through this client. Try to login with the client into the running Ozeki Phone System, with the address of the server(ozekixepbx.ip) and a valid username, password combination.

If you are ready, try to get an existing API Extension, with the GetApiExtension method of the OpsClient. Read more about installation of API Extension.

Further steps

When you are ready with the initial steps above, please create a call object with the help of apiExtension's CreateCall method. Subscribe the CallStateChanged, CallErrorOccurred events of the call object and call call.Start() method.

The CallStateChanged event will be triggered when the call is going to another state . When the CallState is Answered, you can connect the devices to the call. When the call has ended, please do not forget to disconnect all devices from the call.

When the CallState is Answered, start and connect a TextToSpeech object to the call, that will read the "Hello, this is a test call" text to the caller. When the TextToSpeech is finished the call will hang up.

With these steps, you learned how to make a call.

Next: Log calls

Recommended reading

More information