Therefore, it is to be appreciated, that in general the variables transmitted from the modem being tested to the receiving modem can be any combination of {HEAD ~ variables} which allow for transmission of test and {TAIL ~ diagnostic information} 
Therefore , it is to be appreciated , that in general the variables transmitted from the modem being tested to the receiving modem can be any combination of { HEAD ~ variables } which allow for transmission of test and { TAIL ~ diagnostic information }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL