dial tone

dial tone dial tone的音标是什么? tests a phone line for a dial tone的准确意思是什么?test A for 翻译：listen for the dial tone类似英文中生活用语? 我用串口与GSM连接时,出现no dial tone,是什么原因啊用串口调试软件调试时 no dial dial up dial是什么? dial 急用, how to make a phone call with a phone card这片英文文章怎么写 提纲it's easy first,you...next,you...then,you...listen for the dial tone ...dial the phone number ...pick up the receiver..put the phone card into the slot ..listen for zhe answe 1.XMIT VERIFY 2.HELP LIST 3.QUICK-DIAL 4.FAX JOURNAL 5.TEL INDEX 6.USER SETTINGS 7.MEMORY STATUS 1.TONE/PULSE 2.DATE/TIME 3.STATION ID 4.BEEPER0.MISCELLANEOUS 2.INITIAL SETUP 3.SETUP RECEIVE 4.SETUP SEND 5.CANCEL JOB 6.INTERRUPT 7.SET QUICK-DIAL 8.PE tone phonemes tone是什么意思 tone on tone是什么意思 tone是什么意思 dial it down a usb key dial是什么