ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
H04Q0003740000 Identification of subscriber calling from a party-line 1
H04Q0003760000 Translation from the called subscriber's number to the outgoing or incoming control information 1
H04Q0003780000 Temporary storage of information of calling or called subscriber (intermediate storage means for telegraphic communication H04L0013080000) 1
H04Q0005000000 Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange 1
H04Q0005020000 with direct connection for all subscribers, i.e. party-line system (H04Q0005240000 takes precedence);; 1
H04Q0005040000 Signalling by currents in one or other or both line wires or additional wires 1
H04Q0005060000 Signalling by amplitude or polarity of dc 1
H04Q0005080000 Signalling by continuous ac 1
H04Q0005100000 using single frequencies for different subscribers 1
H04Q0005120000 using combinations of frequencies 1
H04Q0005140000 Signalling by pulses 1
H04Q0005160000 by predetermined number of pulses 1
H04Q0005180000 with indirect connection, i.e. through subordinate switching centre 1
H04Q0005200000 the subordinate centre permitting interconnection of subscribers connected thereto 1
H04Q0005220000 the subordinate centre not permitting interconnection of subscribers connected thereto 1