For details, please refer to this standard. GB/T 4728.9-1999 Graphical symbols for electrical schematics Part 9: Telecommunications: Switching and peripheral equipment GB/T4728.9-1999 Standard download decompression password: www.bzxz.net

GB/T 4728. 9—1999
This standard is equivalent to the International Electrotechnical Commission standard IEC60617-9:1996 "Graphical symbols for electrical diagrams Part 9: Telecommunications: switching and peripheral equipment".
This standard is a revision of GB/T4728.9—1985 "Graphical symbols for electrical diagrams Telecommunications: switching and peripheral equipment". Compared with GB/T4728.9--1985, this standard deletes 40 symbols, including 3 symbols adopted in the original IEC60617-9:1983 and now cancelled, which are shown in the form of Appendix A; 37 symbols that were not in the original IEC60617-9:1983 and were added by GB/T4728.9—1985 are deleted, which are shown in the form of Appendix B. In addition, two symbols have been added, the drawing methods of symbols 09-08-04 and 09~09-10 have changed, and the relay diagrams used as examples have now become symbols 09-01-12 and 09-01-13. GB/T4728.9 is a part of the series of standards "Graphical symbols for electrical schematics". This series of standards includes the following parts:
GB/T4728.1 Graphical symbols for electrical diagrams
GB/T4728.2 Graphical symbols for electrical schematics Part 2: Symbol elements, limiting symbols and other commonly used symbols Graphical symbols for electrical schematics
Part 3: Conductors and connectors
GB/T 4728. 3
GB/T 4728.4
GB/T 4728. 5
GB/T 4728. 6
GB/T 4728.7
GB/T 4728.8
GB/T 4728.9
Graphical symbols for electrical schematics
Graphical symbols for electrical diagrams
Graphical symbols for electrical diagrams
Graphical symbols for electrical diagrams
Graphical symbols for electrical diagrams
Graphical symbols for electrical diagrams
GB/T 4728.10
GB/T 4728.11
Graphical symbols for electrical diagrams
Part 4: Basic passive components
Semiconductor tubes and electron tubes
Generation and conversion of electrical energy
Switches, control and protection devices
Measuring instruments, lamps and signaling devices
Part 9: Telecommunications: switching and peripheral equipment Part 10: Telecommunications: transmission
Graphical symbols for electrical diagrams
Electrical lighting and telecommunications arrangements
GB/T4728.12 Graphical symbols for electrical schematics Part 12: Binary logic elements GB/T4728.13 Graphical symbols for electrical schematics Part 13: Analog components The scope and referenced standards of this series of standards can be found in IEC60617-1. When revising GB/T4728.1, it is intended to be equivalent to IEC60617-1. This standard replaces GB/T4728.9-1985 from the date of entry into force. This standard is proposed and coordinated by the National Technical Committee for Standardization of Electrical Documents and Graphic Symbols. This standard was drafted by the Post and Telecommunications Industry Standardization Institute of the Ministry of Posts and Telecommunications and the Mechanical Science Research Institute of the Ministry of Machinery. The main drafters of this standard are: Zhao Xinxin, Guo Ting, and Pan Tao. This standard was first issued in May 1985.
GB/T4728.9—1999
IEC Foreword
1) IEC (International Electrotechnical Commission) is a worldwide standardization organization including all national electrotechnical technical committees (IEC national committees). The goal of IEC is to promote international cooperation on various issues related to standards in the electrical and electronic fields. For this purpose and other activities, IEC publishes international standards. The formulation of international standards is entrusted to various technical committees. Any IEC national committee can participate in the standard formulation work if it is interested in the subject being studied. International, governmental and non-governmental organizations can also participate in the standard formulation work in contact with IEC. IEC and ISO work closely under the conditions determined by the agreement between them. 2) IEC formal resolutions or agreements on technical issues, formulated by technical committees with the participation of national committees that are particularly concerned with these issues, to express international consensus on the subject under study as far as possible. 3) They are published in the form of standards, technical reports or guidelines and recommended for international use. In this sense, they are accepted by the national committees. 4) In order to promote international unification, the IEC national committees undertake the task of applying IEC international standards to the greatest extent possible in their national and regional standards. Any differences between IEC international standards and corresponding national or regional standards should be clearly stated in the latter.
International Standard IEC60617-9 was drafted by 3A Technical Committee (Graphic Symbols for Diagrams) of IEC Technical Committee 3 (Documents and Graphic Symbols).
This second edition abolishes and replaces the first edition of 1983 and has been technically revised. The text of this standard is based on the following documents:
Draft International Standard
3A(CO)203
3A/387/FDIS
VotingFull information on this standard can be found in the voting report mentioned in the table above. Appendix A is for reference only.
Voting Report
3A(CO)215
3A/425/RVD
GB/T 4728.9--1999
IECIntroduction
This part of IEC 60617 forms a part of the series of graphic symbols for diagrams. The series consists of the following parts:
Part 1
Part 2
Part 3
Part 4
Part 5
Part 6
Part 7
Part 8
General information, general index, cross-reference table Symbol elements, qualifiers and other commonly used symbols Conductors and connectors
Basic passive components
Semiconductors and electron tubes
Generation and conversion of electrical energy||tt| |Switchgear, controlgear and protective devicesMeasuring instruments, lights and annunciators
Part 9
Part 10
Part 11
Part 12
Part 13
Telecommunications: switching and peripheral equipment
Telecommunications: transmission
Architectural and surveying installation drawings and schematics
Binary logic elements
Analog components
The scope and standard references of this series can be found in IEC60617-1. The above symbols are designed according to the requirements of ISO11714-1* to be published. The module M=2.5mm is adopted. In order to make the smaller symbols clearer, these symbols are enlarged by one time in this standard and marked with "200%" in the symbol column. In order to save space, the larger symbols are reduced by one time and marked with "50%" in the symbol column. In order to facilitate the drawing of multiple terminals and other layout requirements, the size of the symbol (such as height) can be modified in accordance with Article 7 of ISO11714-1. Regardless of whether the size of the symbol is enlarged, reduced or modified, the width of the original line is not modified proportionally. The symbol layout of this standard should make the distance between the connecting lines a multiple of a certain module. In order to facilitate the marking of the terminals, 2M is usually selected. In order to facilitate understanding, the symbols are drawn at a certain size and when drawing all When using symbols, the same grid is used uniformly. In the computer-aided drawing system, all symbols should be drawn within the grid, and the grid used is reproduced on the background of the symbol. The old symbols included in Appendix A of the first edition of IEC60617-9 have a transition period. This part is no longer included in the second edition, and it will be made clear that they are no longer used.
The index of Appendix B and Appendix C includes an alphabetical index of the symbol name and its number. The symbol name is based on the description of the symbols in this part. The general index of the alphabetical order of symbols for all parts is given by IEC60617-1. *Previously, it was still in the draft international standard stage (Document 3/563/DIS) 179
National Standard of the People's Republic of China
Graphical symbols for electrical schematics
Part 9: Telecommunications: Switching and peripheral equipmentGraphical symbols for electrical schematics symbols for diagramsPart 9: Telecommunications ; Switching and peripheral equipmentSwitching system and its equipment
Part I"
1Switching system
GB/T 4728.9--1999
idt IEC 60617-9:1996
Replaces GB/T4728.9—1985
1.1 The symbols shown in this chapter can be used to represent switching systems regardless of the type of equipment used (see the example of relay diagrams attached to this chapter). 1.2 The terms used in this chapter are defined as follows:
Connection stage
A wiring device for incoming and outgoing lines, in which a line is connected to an outgoing line using only one switching point. There can be several connections in a connection stage at any time. Marking stage
In a common control system, a sequence of connection stages controlled by a marking process. A marking stage can be composed of one or more connection stages.
Switching stage
A sequence of connection stages that together perform a predetermined switching function (such as preselection or routing selection). Highway-group
The maximum number of circuits that can enter an information highway. Serial number
09-01-01
09-01-02
09-01-03
Graphic symbol
Approved by the State Administration of Quality and Technical Supervision on March 23, 1999 180
General symbol of connection level Indicates multiple incoming lines and multiple outgoing lines)
Circuits on one side can be connected individually
to circuits on the other side
Connection level with y incoming lines and y outgoing lines
Connection level consisting of y product groups, each group contains y incoming lines and y outgoing lines
Implemented on October 1, 1999
09-01-04
09-0 1-05
09-01-06
09-01-07
09-01-08
09-01-09
09-01-10
09-01-11
GB/T4728.9
Graphic symbols
Connection level with one group of inbound lines and two groups of outbound lines. The number of incoming lines and outbound lines of each group can be marked with numbers on the relevant lines
Connection level that connects a two-way trunk line group and two unidirectional trunk line groups in opposite directions
Marking level for calls made via a connection level
The limiting symbol for the marking level is a dot. The dot symbol of the marking level should be added to the line of the first connection level of the marking level and the outgoing line of the last connection level.
Example:
Marking level called via three connection levels
Mixed marking level called via one, two or three connection levels
Switching level called via one connection level
The limiting symbol indicating the switching level is an arc. The arc symbol of the switching level should be added to the line of the first connection level of the switching level and the outgoing line of the last connection level.
Example:
Switching level called via three connection levels
Mixed switching level called via one, two or three connection levels
GB/T 4728.9-1999
21-10-60
GB/T 4728. 9 - 1999
-10-60
2Switch equipment block diagram symbols
GB/T 4728. 9— 1999
2.1 Symbol 02-01-02 may be replaced with symbol 09-01-01 to indicate a switch equipment, and an appropriate mark (such as a text symbol) may be added to indicate the type of special equipment.
09-02-01
09-02-02
3 Line selector components
Graphic symbols
Automatic switching equipment
Manual switching station
The circle indicating the splice point as specified in GB/T4728.7 may be hollow or solid. No.
09-03-01
09-03-02
09-03-03
09-03-04
Graphic symbol
Non-jumping selector brush
For another representation, see symbol 09-04-02
Jumping selector arc brush
Single-action selector wire arc or contact row
Line selector with two-stage action, arc or contact row
09-03-05
09-03-06
09-03-07
09-03-08
09-03-09
Line selector
09-04-01
09-04-02
09-04-03
GB/T 4728. 9-1999
Graphic symbols
A selector wire with a specific position (such as home position) represents a group of wires or contacts. A selector contact row or row layer represents a group of wires or contacts.
A group of wires or contacts can be arranged in a straight line instead of an arc
A selector arc layer represents independent wires or contacts. Independent wires or contacts can be arranged in a straight line instead of an arc
Go to Appendix A: 09-A1-01
Selector working coil (selector magnet ) Graphic symbols
Arc layer of the line selector with cross-connected arc brush
Arc layer of the line selector with non-cross-connected arc brush
Single-action non-reset line selector
09-04-04
09-04-05
09-04-06
09-04-07
09-04-08
09-04-09
09-04-10
GB/T 4728.9-1999
Graphic symbols
Single-action reset selector
Two-stage reset selector
Motor-driven reset selector
Reset selector for four-wire switching
Single-action non-reset selector resting on a designated contact bank contact
Single-action for a single outgoing line (or outgoing line group) Reset line selector
Two-stage action line selector and its arc layer
09-04-11
09-04-12
09-04-13
Telephone
09-05-01
09-05-02
09-05-03
09-05-04
GB/T 4728. 9- 1999
Graphic symbols
Crossbar connector, general symbols
Example:
A connection unit of a crossbar connector
Crossbar connector with four-wire connection
Part I
Graphic symbols
Telephone, telegraph and data equipment
Telephone, general symbols
Battery telephone
Common power telephone
Dial telephone||t t||The dots in the circle (dial) may be omitted if it does not cause misunderstanding
09-05-05
09-05-06
09-05-07
09-05-08
09-05-09
09-05-10
09-05-11
09-05-12
Telegraph and data equipment
GB/T 4728. 9 --- 1999
Graphic symbols
Push-button dial telephones
Push-button or push-button dial telephones with special functions not used for dialing or multi-line operation
Pay telephones
Telephones with ring generators, such as magnetophones
Telephones with loudspeakers
Telephones with amplifiers
Sound-powered telephones
Telephones for two or more lines (switch lines or extension lines)
The following symbols may be used to represent complete sets of terminal equipment (receivers, transmitters and other auxiliary equipment) within the office. Serial No.
09-06-01
Graphic symbols
Transmitting equipment2 The terms used in this chapter are defined as follows:
Connection stage
is a wiring device for incoming and outgoing lines in which only one switching point is used to connect an incoming line to an outgoing line. In a connection stage, several connections may exist at any time. Marking stage
In a common control system, a sequence of connection stages controlled by a marking process. A marking stage may consist of one or more connection stages.
Switching stage
A sequence of connection stages that together perform a predetermined switching function (such as preselection or routing selection). Highway-group
The maximum number of circuits that can enter an information highway. Serial number
09-01-01
09-01-02
09-01-03
Graphic symbol
Approved by the State Administration of Quality and Technical Supervision on March 23, 1999 180
General symbol of connection level Indicates multiple incoming lines and multiple outgoing lines)
Circuits on one side can be connected individually
to circuits on the other side
Connection level with y incoming lines and y outgoing lines
Connection level consisting of y product groups, each group contains y incoming lines and y outgoing lines
Implemented on October 1, 1999
09-01-04
09-0 1-05
09-01-06
09-01-07
09-01-08
09-01-09
09-01-10
09-01-11
GB/T4728.9
Graphic symbols
Connection level with one group of inbound lines and two groups of outbound lines. The number of incoming lines and outbound lines of each group can be marked with numbers on the relevant lines
Connection level that connects a two-way trunk line group and two unidirectional trunk line groups in opposite directions
Marking level for calls made via a connection level
The limiting symbol for the marking level is a dot. The dot symbol of the marking level should be added to the line of the first connection level of the marking level and the outgoing line of the last connection level.
Example:
Marking level called via three connection levels
Mixed marking level called via one, two or three connection levels
Switching level called via one connection level
The limiting symbol indicating the switching level is an arc. The arc symbol of the switching level should be added to the line of the first connection level of the switching level and the outgoing line of the last connection level.
Example:
Switching level called via three connection levels
Mixed switching level called via one, two or three connection levels
GB/T 4728.9-1999
21-10-60
GB/T 4728. 9 - 1999
-10-60
2Switch equipment block diagram symbols
GB/T 4728. 9— 1999
2.1 Symbol 02-01-02 may be replaced with symbol 09-01-01 to indicate a switch equipment, and an appropriate mark (such as a text symbol) may be added to indicate the type of special equipment.
09-02-01
09-02-02
3 Line selector components
Graphic symbols
Automatic switching equipment
Manual switching station
The circle indicating the splice point as specified in GB/T4728.7 may be hollow or solid. No.
09-03-01
09-03-02
09-03-03
09-03-04
Graphic symbol
Non-jumping selector brush
For another representation, see symbol 09-04-02
Jumping selector arc brush
Single-action selector wire arc or contact row
Line selector with two-stage action, arc or contact row
09-03-05
09-03-06
09-03-07
09-03-08
09-03-09
Line selector
09-04-01
09-04-02
09-04-03
GB/T 4728. 9-1999
Graphic symbols
A selector wire with a specific position (such as home position) represents a group of wires or contacts. A selector contact row or row layer represents a group of wires or contacts.
A group of wires or contacts can be arranged in a straight line instead of an arc
A selector arc layer represents independent wires or contacts. Independent wires or contacts can be arranged in a straight line instead of an arc
Go to Appendix A: 09-A1-01
Selector working coil (selector magnet ) Graphic symbols
Arc layer of the line selector with cross-connected arc brush
Arc layer of the line selector with non-cross-connected arc brush
Single-action non-reset line selector
09-04-04
09-04-05
09-04-06
09-04-07
09-04-08
09-04-09
09-04-10
GB/T 4728.9-1999
Graphic symbols
Single-action reset selector
Two-stage reset selector
Motor-driven reset selector
Reset selector for four-wire switching
Single-action non-reset selector resting on a designated contact bank contact
Single-action for a single outgoing line (or outgoing line group) Reset line selector
Two-stage action line selector and its arc layer
09-04-11
09-04-12
09-04-13
Telephone
09-05-01
09-05-02
09-05-03
09-05-04
GB/T 4728. 9- 1999
Graphic symbols
Crossbar connector, general symbols
Example:
A connection unit of a crossbar connector
Crossbar connector with four-wire connection
Part I
Graphic symbols
Telephone, telegraph and data equipment
Telephone, general symbols
Battery telephone
Common power telephone
Dial telephone||t t||The dots in the circle (dial) may be omitted if it does not cause misunderstanding
09-05-05
09-05-06
09-05-07
09-05-08
09-05-09
09-05-10
09-05-11
09-05-12
Telegraph and data equipment
GB/T 4728. 9 --- 1999
Graphic symbols
Push-button dial telephones
Push-button or push-button dial telephones with special functions not used for dialing or multi-line operation
Pay telephones
Telephones with ring generators, such as magnetophones
Telephones with loudspeakers
Telephones with amplifiers
Sound-powered telephones
Telephones for two or more lines (switch lines or extension lines)
The following symbols may be used to represent complete sets of terminal equipment (receivers, transmitters and other auxiliary equipment) within the office. Serial No.
09-06-01
Graphic symbols
Transmitting equipment2 The terms used in this chapter are defined as follows:
Connection stage
is a wiring device for incoming and outgoing lines in which only one switching point is used to connect an incoming line to an outgoing line. In a connection stage, several connections may exist at any time. Marking stage
In a common control system, a sequence of connection stages controlled by a marking process. A marking stage may consist of one or more connection stages.
Switching stage
A sequence of connection stages that together perform a predetermined switching function (such as preselection or routing selection). Highway-group
The maximum number of circuits that can enter an information highway. Serial number
09-01-01
09-01-02
09-01-03
Graphic symbol
Approved by the State Administration of Quality and Technical Supervision on March 23, 1999 180
General symbol of connection level Indicates multiple incoming lines and multiple outgoing lines)
Circuits on one side can be connected individually
to circuits on the other side
Connection level with y incoming lines and y outgoing lines
Connection level consisting of y product groups, each group contains y incoming lines and y outgoing lines
Implemented on October 1, 1999
09-01-04
09-0 1-05
09-01-06
09-01-07
09-01-08
09-01-09
09-01-10
09-01-11
GB/T4728.9
Graphic symbols
Connection level with one group of inbound lines and two groups of outbound lines. The number of incoming lines and outbound lines of each group can be marked with numbers on the relevant lines
Connection level that connects a two-way trunk line group and two unidirectional trunk line groups in opposite directions
Marking level for calls made via a connection level
The limiting symbol for the marking level is a dot. The dot symbol of the marking level should be added to the line of the first connection level of the marking level and the outgoing line of the last connection level.
Example:
Marking level called via three connection levels
Mixed marking level called via one, two or three connection levels
Switching level called via one connection level
The limiting symbol indicating the switching level is an arc. The arc symbol of the switching level should be added to the line of the first connection level of the switching level and the outgoing line of the last connection level.
Example:
Switching level called via three connection levels
Mixed switching level called via one, two or three connection levels
GB/T 4728.9-1999
21-10-60
GB/T 4728. 9 - 1999
-10-60
2Switch equipment block diagram symbols
GB/T 4728. 9— 1999
2.1 Symbol 02-01-02 may be replaced with symbol 09-01-01 to indicate a switch equipment, and an appropriate mark (such as a text symbol) may be added to indicate the type of special equipment.
09-02-01
09-02-02
3 Line selector components
Graphic symbols
Automatic switching equipment
Manual switching station
The circle indicating the splice point as specified in GB/T4728.7 may be hollow or solid. No.
09-03-01
09-03-02
09-03-03
09-03-04
Graphic symbol
Non-jumping selector brush
For another representation, see symbol 09-04-02
Jumping selector arc brush
Single-action selector wire arc or contact row
Line selector with two-stage action, arc or contact row
09-03-05
09-03-06
09-03-07
09-03-08
09-03-09
Line selector
09-04-01
09-04-02
09-04-03
GB/T 4728. 9-1999
Graphic symbols
A selector wire with a specific position (such as home position) represents a group of wires or contacts. A selector contact row or row layer represents a group of wires or contacts.
A group of wires or contacts can be arranged in a straight line instead of an arc
A selector arc layer represents independent wires or contacts. Independent wires or contacts can be arranged in a straight line instead of an arc
Go to Appendix A: 09-A1-01
Selector working coil (selector magnet ) Graphic symbols
Arc layer of the line selector with cross-connected arc brush
Arc layer of the line selector with non-cross-connected arc brush
Single-action non-reset line selector
09-04-04
09-04-05
09-04-06
09-04-07
09-04-08
09-04-09
09-04-10
GB/T 4728.9-1999
Graphic symbols
Single-action reset selector
Two-stage reset selector
Motor-driven reset selector
Reset selector for four-wire switching
Single-action non-reset selector resting on a designated contact bank contact
Single-action for a single outgoing line (or outgoing line group) Reset line selector
Two-stage action line selector and its arc layer
09-04-11
09-04-12
09-04-13
Telephone
09-05-01
09-05-02
09-05-03
09-05-04
GB/T 4728. 9- 1999
Graphic symbols
Crossbar connector, general symbols
Example:
A connection unit of a crossbar connector
Crossbar connector with four-wire connection
Part I
Graphic symbols
Telephone, telegraph and data equipment
Telephone, general symbols
Battery telephone
Common power telephone
Dial telephone||t t||The dots in the circle (dial) may be omitted if it does not cause misunderstanding
09-05-05
09-05-06
09-05-07
09-05-08
09-05-09
09-05-10
09-05-11
09-05-12
Telegraph and data equipment
GB/T 4728. 9 --- 1999
Graphic symbols
Push-button dial telephones
Push-button or push-button dial telephones with special functions not used for dialing or multi-line operation
Pay telephones
Telephones with ring generators, such as magnetophones
Telephones with loudspeakers
Telephones with amplifiers
Sound-powered telephones
Telephones for two or more lines (switch lines or extension lines)
The following symbols may be used to represent complete sets of terminal equipment (receivers, transmitters and other auxiliary equipment) within the office. Serial No.
09-06-01
Graphic symbols
Transmitting equipment9 --- 1999
Graphic symbols
Push-button dial telephone
Push-button or push-button dial telephone with special functions not used for dialing or multi-line operation
Pay telephone
Telephone with ring generator, such as magnetophoneTelephone with loudspeaker
Telephone with amplifier
Sound energy telephone
Telephone for two or more lines (switch lines or extension lines)
The following symbols can be used to represent complete sets of terminal equipment (receivers, transmitters and other auxiliary equipment) within the office. Serial number
09-06-01
Graphic symbols
Transmitting equipment9 --- 1999
Graphic symbols
Push-button dial telephone
Push-button or push-button dial telephone with special functions not used for dialing or multi-line operation
Pay telephone
Telephone with ring generator, such as magnetophoneTelephone with loudspeaker
Telephone with amplifier
Sound energy telephone
Telephone for two or more lines (switch lines or extension lines)
The following symbols can be used to represent complete sets of terminal equipment (receivers, transmitters and other auxiliary equipment) within the office. Serial number
09-06-01
Graphic symbols
Transmitting equipment9 --- 1999
Graphic symbols
Push-button dial telephone
Push-button or push-button dial telephone with special functions not used for dialing or multi-line operation
Pay telephone
Telephone with ring generator, such as magnetophoneTelephone with loudspeaker
Telephone with amplifier
Sound energy telephone
Telephone for two or more lines (switch lines or extension lines)
The following symbols can be used to represent complete sets of terminal equipment (receivers, transmitters and other auxiliary equipment) within the office. Serial number
09-06-01
Graphic symbols
Transmitting equipment9 --- 1999
Graphic symbols
Push-button dial telephone
Push-button or push-button dial telephone with special functions not used for dialing or multi-line operation
Pay telephone
Telephone with ring generator, such as magnetophoneTelephone with loudspeaker
Telephone with amplifier
Sound energy telephone
Telephone for two or more lines (switch lines or extension lines)
The following symbols can be used to represent complete sets of terminal equipment (receivers, transmitters and other auxiliary equipment) within the office. Serial number
09-06-01
Graphic symbols
Transmitting equipment9
Graphic symbols
Connection level with one group of incoming lines and two groups of outgoing lines. The number of incoming lines and outgoing lines of each group can be marked with numbers on the relevant lines
Connection level that connects a two-way trunk line group and two unidirectional trunk line groups in opposite directions
Marking level for calls via a connection level
The limiting symbol for the marking level is a dot. The dot symbol of the marking level should be added to the line of the first connection level of the marking level and the outgoing line of the last connection level.
Example:
Marking level called via three connection levels
Mixed marking level called via one, two or three connection levels
Switching level called via one connection level
The limiting symbol indicating the switching level is an arc. The arc symbol of the switching level should be added to the line of the first connection level of the switching level and the outgoing line of the last connection level.
Example:
Switching level called via three connection levels
Mixed switching level called via one, two or three connection levels
GB/T 4728.9-1999
21-10-60
GB/T 4728. 9 - 1999
-10-60
2Switch equipment block diagram symbols
GB/T 4728. 9— 1999
2.1 Symbol 02-01-02 may be replaced with symbol 09-01-01 to indicate a switch equipment, and an appropriate mark (such as a text symbol) may be added to indicate the type of special equipment.
09-02-01
09-02-02
3 Line selector components
Graphic symbols
Automatic switching equipment
Manual switching station
The circle indicating the splice point as specified in GB/T4728.7 may be hollow or solid. No.
09-03-01
09-03-02
09-03-03
09-03-04
Graphic symbol
Non-jumping selector brush
For another representation, see symbol 09-04-02Www.bzxZ.net
Jumping selector arc brush
Single-action selector wire arc or contact row
Line selector with two-stage action, arc or contact row
09-03-05
09-03-06
09-03-07
09-03-08
09-03-09
Line selector
09-04-01
09-04-02
09-04-03
GB/T 4728. 9-1999
Graphic symbols
A selector wire with a specific position (such as home position) represents a group of wires or contacts. A selector contact row or row layer represents a group of wires or contacts.
A group of wires or contacts can be arranged in a straight line instead of an arc
A selector arc layer represents independent wires or contacts. Independent wires or contacts can be arranged in a straight line instead of an arc
Go to Appendix A: 09-A1-01
Selector working coil (selector magnet ) Graphic symbols
Arc layer of the line selector with cross-connected arc brush
Arc layer of the line selector with non-cross-connected arc brush
Single-action non-reset line selector
09-04-04
09-04-05
09-04-06
09-04-07
09-04-08
09-04-09
09-04-10
GB/T 4728.9-1999
Graphic symbols
Single-action reset selector
Two-stage reset selector
Motor-driven reset selector
Reset selector for four-wire switching
Single-action non-reset selector resting on a designated contact bank contact
Single-action for a single outgoing line (or outgoing line group) Reset line selector
Two-stage action line selector and its arc layer
09-04-11
09-04-12
09-04-13
Telephone
09-05-01
09-05-02
09-05-03
09-05-04
GB/T 4728. 9- 1999
Graphic symbols
Crossbar connector, general symbols
Example:
A connection unit of a crossbar connector
Crossbar connector with four-wire connection
Part I
Graphic symbols
Telephone, telegraph and data equipment
Telephone, general symbols
Battery telephone
Common power telephone
Dial telephone||t t||The dots in the circle (dial) may be omitted if it does not cause misunderstanding
09-05-05
09-05-06
09-05-07
09-05-08
09-05-09
09-05-10
09-05-11
09-05-12
Telegraph and data equipment
GB/T 4728. 9 --- 1999
Graphic symbols
Push-button dial telephones
Push-button or push-button dial telephones with special functions not used for dialing or multi-line operation
Pay telephones
Telephones with ring generators, such as magnetophones
Telephones with loudspeakers
Telephones with amplifiers
Sound-powered telephones
Telephones for two or more lines (switch lines or extension lines)
The following symbols may be used to represent complete sets of terminal equipment (receivers, transmitters and other auxiliary equipment) within the office. Serial No.
09-06-01
Graphic symbols
Transmitting equipment9
Graphic symbols
Connection level with one group of incoming lines and two groups of outgoing lines. The number of incoming lines and outgoing lines of each group can be marked with numbers on the relevant lines
Connection level that connects a two-way trunk line group and two unidirectional trunk line groups in opposite directions
Marking level for calls via a connection level
The limiting symbol for the marking level is a dot. The dot symbol of the marking level should be added to the line of the first connection level of the marking level and the outgoing line of the last connection level.
Example:
Marking level called via three connection levels
Mixed marking level called via one, two or three connection levels
Switching level called via one connection level
The limiting symbol indicating the switching level is an arc. The arc symbol of the switching level should be added to the line of the first connection level of the switching level and the outgoing line of the last connection level.
Example:
Switching level called via three connection levels
Mixed switching level called via one, two or three connection levels
GB/T 4728.9-1999
21-10-60
GB/T 4728. 9 - 1999
-10-60
2Switch equipment block diagram symbols
GB/T 4728. 9— 1999
2.1 Symbol 02-01-02 may be replaced with symbol 09-01-01 to indicate a switch equipment, and an appropriate mark (such as a text symbol) may be added to indicate the type of special equipment.
09-02-01
09-02-02
3 Line selector components
Graphic symbols
Automatic switching equipment
Manual switching station
The circle indicating the splice point as specified in GB/T4728.7 may be hollow or solid. No.
09-03-01
09-03-02
09-03-03
09-03-04
Graphic symbol
Non-jumping selector brush
For another representation, see symbol 09-04-02
Jumping selector arc brush
Single-action selector wire arc or contact row
Line selector with two-stage action, arc or contact row
09-03-05
09-03-06
09-03-07
09-03-08
09-03-09
Line selector
09-04-01
09-04-02
09-04-03
GB/T 4728. 9-1999
Graphic symbols
A selector wire with a specific position (such as home position) represents a group of wires or contacts. A selector contact row or row layer represents a group of wires or contacts.
A group of wires or contacts can be arranged in a straight line instead of an arc
A selector arc layer represents independent wires or contacts. Independent wires or contacts can be arranged in a straight line instead of an arc
Go to Appendix A: 09-A1-01
Selector working coil (selector magnet ) Graphic symbols
Arc layer of the line selector with cross-connected arc brush
Arc layer of the line selector with non-cross-connected arc brush
Single-action non-reset line selector
09-04-04
09-04-05
09-04-06
09-04-07
09-04-08
09-04-09
09-04-10
GB/T 4728.9-1999
Graphic symbols
Single-action reset selector
Two-stage reset selector
Motor-driven reset selector
Reset selector for four-wire switching
Single-action non-reset selector resting on a designated contact bank contact
Single-action for a single outgoing line (or outgoing line group) Reset line selector
Two-stage action line selector and its arc layer
09-04-11
09-04-12
09-04-13
Telephone
09-05-01
09-05-02
09-05-03
09-05-04
GB/T 4728. 9- 1999
Graphic symbols
Crossbar connector, general symbols
Example:
A connection unit of a crossbar connector
Crossbar connector with four-wire connection
Part I
Graphic symbols
Telephone, telegraph and data equipment
Telephone, general symbols
Battery telephone
Common power telephone
Dial telephone||t t||The dots in the circle (dial) may be omitted if it does not cause misunderstanding
09-05-05
09-05-06
09-05-07
09-05-08
09-05-09
09-05-10
09-05-11
09-05-12
Telegraph and data equipment
GB/T 4728. 9 --- 1999
Graphic symbols
Push-button dial telephones
Push-button or push-button dial telephones with special functions not used for dialing or multi-line operation
Pay telephones
Telephones with ring generators, such as magnetophones
Telephones with loudspeakers
Telephones with amplifiers
Sound-powered telephones
Telephones for two or more lines (switch lines or extension lines)
The following symbols may be used to represent complete sets of terminal equipment (receivers, transmitters and other auxiliary equipment) within the office. Serial No.
09-06-01
Graphic symbols
Transmitting equipment9-1999
Graphic symbols
A selector wire with a specific position (such as home position) represents a group of wires or contacts. A selector contact row or row layer represents a group of wires or contacts.
A group of wires or contacts can be arranged in a straight line instead of an arc
A selector arc layer represents independent wires or contacts. Independent wires or contacts can be arranged in a straight line instead of an arc
Go to Appendix A: 09-A1-01
Selector working coil (selector magnet ) Graphic symbols
Arc layer of the line selector with cross-connected arc brush
Arc layer of the line selector with non-cross-connected arc brush
Single-action non-reset line selector
09-04-04
09-04-05
09-04-06
09-04-07
09-04-08
09-04-09
09-04-10
GB/T 4728.9-1999
Graphic symbols
Single-action reset selector
Two-stage reset selector
Motor-driven reset selector
Reset selector for four-wire switching
Single-action non-reset selector resting on a designated contact bank contact
Single-action for a single outgoing line (or outgoing line group) Reset line selector
Two-stage action line selector and its arc layer
09-04-11
09-04-12
09-04-13
Telephone
09-05-01
09-05-02
09-05-03
09-05-04
GB/T 4728. 9- 1999
Graphic symbols
Crossbar connector, general symbols
Example:
A connection unit of a crossbar connector
Crossbar connector with four-wire connection
Part I
Graphic symbols
Telephone, telegraph and data equipment
Telephone, general symbols
Battery telephone
Common power telephone
Dial telephone||t t||The dots in the circle (dial) may be omitted if it does not cause misunderstanding
09-05-05
09-05-06
09-05-07
09-05-08
09-05-09
09-05-10
09-05-11
09-05-12
Telegraph and data equipment
GB/T 4728. 9 --- 1999
Graphic symbols
Push-button dial telephones
Push-button or push-button dial telephones with special functions not used for dialing or multi-line operation
Pay telephones
Telephones with ring generators, such as magnetophones
Telephones with loudspeakers
Telephones with amplifiers
Sound-powered telephones
Telephones for two or more lines (switch lines or extension lines)
The following symbols may be used to represent complete sets of terminal equipment (receivers, transmitters and other auxiliary equipment) within the office. Serial No.
09-06-01
Graphic symbols
Transmitting equipment9-1999
Graphic symbols
A selector wire with a specific position (such as home position) represents a group of wires or contacts. A selector contact row or row layer represents a group of wires or contacts.
A group of wires or contacts can be arranged in a straight line instead of an arc
A selector arc layer represents independent wires or contacts. Independent wires or contacts can be arranged in a straight line instead of an arc
Go to Appendix A: 09-A1-01
Selector working coil (selector magnet ) Graphic symbols
Arc layer of the line selector with cross-connected arc brush
Arc layer of the line selector with non-cross-connected arc brush
Single-action non-reset line selector
09-04-04
09-04-05
09-04-06
09-04-07
09-04-08
09-04-09
09-04-10
GB/T 4728.9-1999
Graphic symbols
Single-action reset selector
Two-stage reset selector
Motor-driven reset selector
Reset selector for four-wire switching
Single-action non-reset selector resting on a designated contact bank contact
Single-action for a single outgoing line (or outgoing line group) Reset line selector
Two-stage action line selector and its arc layer
09-04-11
09-04-12
09-04-13
Telephone
09-05-01
09-05-02
09-05-03
09-05-04
GB/T 4728. 9- 1999
Graphic symbols
Crossbar connector, general symbols
Example:
A connection unit of a crossbar connector
Crossbar connector with four-wire connection
Part I
Graphic symbols
Telephone, telegraph and data equipment
Telephone, general symbols
Battery telephone
Common power telephone
Dial telephone||t t||The dots in the circle (dial) may be omitted if it does not cause misunderstanding
09-05-05
09-05-06
09-05-07
09-05-08
09-05-09
09-05-10
09-05-11
09-05-12
Telegraph and data equipment
GB/T 4728. 9 --- 1999
Graphic symbols
Push-button dial telephones
Push-button or push-button dial telephones with special functions not used for dialing or multi-line operation
Pay telephones
Telephones with ring generators, such as magnetophones
Telephones with loudspeakers
Telephones with amplifiers
Sound-powered telephones
Telephones for two or more lines (switch lines or extension lines)
The following symbols may be used to represent complete sets of terminal equipment (receivers, transmitters and other auxiliary equipment) within the office. Serial No.
09-06-01
Graphic symbols
Transmitting equipment
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