The invention relates to a device for providing the subscriber of a telephone line with {HEAD ~ information} on {TAIL ~ the telephone calls} made on his line 
on
The invention relates to a device for providing the subscriber of a telephone line with { HEAD ~ information } on { TAIL ~ the telephone calls } made on his line
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH