dialup_device
send_command(dialup_device* device, const char* command)
read_command_reply(dialup_device* device, const char* command,
hangup(dialup_device* device)
dialup_device* device = new (std::nothrow)dialup_device;
memset(device, 0, sizeof(dialup_device));
dialup_device* device = (dialup_device*)_device;
dialup_device* device = (dialup_device*)_device;
dialup_device* device = (dialup_device*)_device;
dialup_device* device = (dialup_device*)_device;
dialup_device* device = (dialup_device*)_device;
dialup_device* device = (dialup_device*)_device;
dialup_device* device = (dialup_device*)_device;
switch_to_command_mode(dialup_device* device)
switch_to_data_mode(dialup_device* device)