public void A2PSendSms() { // Send the SMS message with the text "Test message" from the phone // number 447443332211 to the phone numbers 447443332212 and // 447443332213. try { var voximplant = new VoximplantAPI(); var result = voximplant.A2PSendSms( "447443332211", "447443332212", "Test message" ).Result; Console.WriteLine($"Response: {result.ToString()}"); } catch (Exception e) { Console.WriteLine($"Error: {e.Message}"); } }