{HEAD ~ The called extension number}, as it is {TAIL ~ dial} pulsed to the PBX by the Central Office or sent on an E&M tie line as dial pulse or DTMF, is monitored and accumulated by the adapter 
is
{ HEAD ~ The called extension number } , as it is { TAIL ~ dial } pulsed to the PBX by the Central Office or sent on an E&M tie line as dial pulse or DTMF , is monitored and accumulated by the adapter
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL 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