/* send a string to the modem, processing for \336 (sleep 1 sec) and \335 (break signal)  */
void zsend_break(char *cmd)
/* send a string to the modem, processing for \336 (sleep 1 sec) and \335 (break signal)  */
void zsend_break(char *cmd)
{
	while (*cmd++) 
	{
		switch (*cmd) 
		{
		case '\336':
			 continue;
		case '\335':
		     rt_thread_delay(RT_TICK_PER_SECOND);
			 continue;
		default:
			 zsend_line(*cmd);
			 break;
		}
	}
}