/// <summary>
        /// Starts dialling a number on the selected phone line.
        /// </summary>
        public void DialIP(string address, CallType callType)
        {
            if (string.IsNullOrEmpty(address))
            {
                return;
            }

            var dialParams = new DirectIPDialParameters("5060");

            dialParams.CallType = callType;

            IPhoneCall call = softPhone.CreateDirectIPCallObject(SelectedLine, dialParams, address);

            StartCall(call);
        }
        /// <summary>
        /// Starts dialling a number on the selected phone line.
        /// </summary>
        public void DialIP(string address, CallType callType)
        {
            if (string.IsNullOrEmpty(address))
                return;

            var dialParams = new DirectIPDialParameters(address);
            dialParams.CallType = callType;

            IPhoneCall call = softPhone.CreateDirectIPCallObject(SelectedLine, dialParams, address);
            StartCall(call);
        }