The diagnostic information transmission mode is initiated by transmitting {TAIL ~ an initiate diagnostic link mode message} to {HEAD ~ a receiving modem} accompanied by a cyclic redundancy check  
The diagnostic information transmission mode is initiated by transmitting { TAIL ~ an initiate diagnostic link mode message } to { HEAD ~ a receiving modem } accompanied by a cyclic redundancy check
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH