# Make a voice call

This sample application demonstrates how to make a voice call.

1. Implement ResponseCallback interface to receive subsystem initialization status

std::promise<telux::common::ServiceStatus> cbProm = std::promise<telux::common::ServiceStatus>();
    void initResponseCb(telux::common::ServiceStatus status) {
       if(subSystemsStatus == SERVICE_AVAILABLE) {
          std::cout << Call Manager subsystem is ready << std::endl;
       } else if(subSystemsStatus == SERVICE_FAILED) {
          std::cout << Call Manager subsystem initialization failed << std::endl;
       }
       cbProm.set_value(status);
    }
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2. Get the PhoneFactory and Call Manager instance

auto &phoneFactory = PhoneFactory::getInstance();
    auto callManager = phoneFactory.getCallManager(initResponseCb);
    if(callManager == NULL) {
       std::cout << " Failed to get Call Manager instance" << std::endl;
       return -1;
    }
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3. Wait for Call Manager subsystem to be ready

telux::common::ServiceStatus status = cbProm.get_future().get();
    if(status != SERVICE_AVAILABLE) {
       std::cout << Unable to initialize Call Manager subsystem << std::endl;
       return -1;
    }
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4. Optionally, implement IMakeCallCallback interface to receive response for the dial request

class DialCallback : public IMakeCallCallback {
    public:
       void DialCallback::makeCallResponse(ErrorCode error, std::shared_ptr<ICall> call) {
          // will be invoked with response of makeCall operation
       }
    };
    std::shared_ptr<DialCallback> dialCb = std::make_shared<DialCallback> ();
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5. Send a dial request

if(callManager) {
       std::string phoneNumber("+18989531755");
       int phoneId = 1;
       auto makeCallStatus = callManager->makeCall(phoneId, phoneNumber, dialCb);
       std::cout << "Dial Call Status:" << (int)makeCallStatus << std::endl;
    }
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Last Published: Jun 24, 2026

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