/**
         * Invoke a phone call
         *
         * @param number to call
         * @return Status of the call
         * @since v2.0
         */
        public ITelephonyStatus Call(string number)
        {
            // Start logging elapsed time.
            long     tIn    = TimerUtil.CurrentTimeMillis();
            ILogging logger = AppRegistryBridge.GetInstance().GetLoggingBridge();

            if (logger != null)
            {
                logger.Log(ILoggingLogLevel.Debug, this.apiGroup.ToString(), "TelephonyBridge executing call...");
            }

            ITelephonyStatus result = ITelephonyStatus.Unknown;

            if (this._delegate != null)
            {
                result = this._delegate.Call(number);
                if (logger != null)
                {
                    logger.Log(ILoggingLogLevel.Debug, this.apiGroup.ToString(), "TelephonyBridge executed 'call' in " + (TimerUtil.CurrentTimeMillis() - tIn) + "ms.");
                }
            }
            else
            {
                if (logger != null)
                {
                    logger.Log(ILoggingLogLevel.Error, this.apiGroup.ToString(), "TelephonyBridge no delegate for 'call'.");
                }
            }
            return(result);
        }
        /**
         * Invokes the given method specified in the API request object.
         *
         * @param request APIRequest object containing method name and parameters.
         * @return APIResponse with status code, message and JSON response or a JSON null string for void functions. Status code 200 is OK, all others are HTTP standard error conditions.
         */
        public new APIResponse Invoke(APIRequest request)
        {
            APIResponse response        = new APIResponse();
            int         responseCode    = 200;
            String      responseMessage = "OK";
            String      responseJSON    = "null";

            switch (request.GetMethodName())
            {
            case "call":
                string           number0   = GetJSONProcessor().DeserializeObject <string>(request.GetParameters()[0]);
                ITelephonyStatus response0 = this.Call(number0);
                responseJSON = GetJSONProcessor().SerializeObject(response0);
                break;

            default:
                // 404 - response null.
                responseCode    = 404;
                responseMessage = "TelephonyBridge does not provide the function '" + request.GetMethodName() + "' Please check your client-side API version; should be API version >= v2.2.15.";
                break;
            }
            response.SetResponse(responseJSON);
            response.SetStatusCode(responseCode);
            response.SetStatusMessage(responseMessage);
            return(response);
        }