ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
H04M0015120000 Discriminative metering 1
H04M0015140000 according to class of calling party 1
H04M0015160000 according to connection obtained 1
H04M0015180000 according to duration of call 1
H04M0015200000 Operator's time recording or indicating arrangements 1
H04M0015220000 according to time of day 1
H04M0015240000 preventing metering of tax-free calls to certain lines, e.g. to fire or ambulance stations 1
H04M0015260000 with a meter at the exchange controlled by an operator 1
H04M0015280000 with meter at substation 1
H04M0015300000 the meter not being controlled from an exchange 1
H04M0015320000 Metering arrangements for satellites or concentrators which connect one or more exchange lines with a group of local lines 1
H04M0015340000 Metering arrangements for private branch exchanges 1
H04M0015360000 Metering arrangements for party-lines 1
H04M0015380000 Metering by apparatus other than; mechanical step-by-step counter type 1
H04M0017000000 Prepayment telephone systems (using a coded card to authorise calls from a telephone set H04M0001675000) 1