MH/T 4040-2013Test method for civil aviation air traffic control voice communication switch system (English PDF)

3.1 Terms and definitions

The following terms and definitions established in MH/T 4027 apply to this document.

3.1.1

System

The sum of equipment and man-machine interface.

3.1.2

Position terminal

The communication control panel that is assigned roles (such as controller, director on duty, system monitor, etc.) when working online.

3.1.3

Log

Records related operations such as system operation monitoring, configuration operations, date, time, users and actions (not limited to).

3.2 Abbreviations

The following abbreviations apply to this document.

ATS-QSIG Air Traffic Secvices Signalling at Q Reference Point) CO Central Office Switch (Central Office) DA uses a single preset button on the seat panel to directly dial the preset target number (Direct Access) DTMF Dual Tone Multi-Frequency ECMA European Computer Manufacturers Association (European Telecommunication Standards Institute) GPS Global Positioning System (Globe Positioning System) HF High Frequency IA dials the target number through the dial pad on the seat panel (Indirect Access) ISDN Integrated Services Digital Network (Integrated Services Digital Network) ITU-T International Telecommunications Union-T MFC Multi-Frequency Code PABX Private Automatic Exchange (Private Automatic) PCM pulse code modulation (Pulse Code Modulation) PSTN Public Switch Telephone Network (Public Switch Telephone Network) PTT button transmit, release and receive communication mode (Push-To-Talk) UHF Ultra High Frequency (Ultra High Frequency) VHF (Very High Frequency)

4.1 Test conditions

4.1.1 The test environment is.

a) Temperature. 0 °C~40 °C;

b) Relative humidity. 40%~90%, no condensation water in the machine;

c) Air pressure. 86 kPa~106 kPa.

4.1.2 The power supply voltage is AC 220 V ± 22 V, and the frequency is 50 Hz ± 3 Hz.

4.2 Test instruments and devices

The test instrument used should be qualified and within the validity period, the error of the instrument should be less than one-third of the allowable error of the measured parameter. Instrument used the devices and devices are as follows.

5.1 Basic function test

5.1.1 Multitask Parallel

5.1.1.1 Test process

The system works normally.

At the same time start all available wireless communication, wired communication, monitoring and other tasks.

5.1.1.2 Qualification judgment

Multiple tasks should be able to work simultaneously without interfering with each other.

5.1.2 Completely non-blocking voice exchange

5.1.2.1 Test process

Make the system in normal working condition.

Configure wired telephone and wireless frequency communication resources to the seat terminal panel.

Allocate resources for individual test seats one by one.

All seats in the system start the configured wired tasks, wireless tasks, and monitoring tasks at the same time, making multiple tasks work in parallel.

Check the working status of each task.

5.1.2.2 Qualification judgment

In the case of a single test, each communication task of the system should work normally. Under multiple test conditions, the system's wired tasks and no Line tasks and monitoring tasks should also be able to work normally at the same time.

5.1.3 Support the active and standby working mode under full-featured capabilities

5.1.3.1 Test process

Make sure that the system is operating normally under full-featured capabilities, and the main and standby machines are working normally at the same time.

Turn off the host, can realize seamless switching, stand-by machine runs independently, and there is no flicker on the seat terminal interface.

Turn off the standby machine to achieve seamless switching, the host runs independently, and the seat terminal interface does not flicker.

Restore the active and standby machines at the same time.

5.1.3.2 Qualification judgment

During the switching process, after switching or resuming simultaneous operation, the system's full-featured operation should be uninterrupted and operating normally.

5.1.4 Support various wireless communication, wired communication and data communication interfaces

5.1.4.1 Test process

The analog wireless communication interface of the system should at least include PTT signal output, transmit audio signal output, receive audio signal input, SQL Squelch signal input, ground signal.

The analog wired communication interface of the system should include magnet telephone, dedicated line telephone, satellite telephone, PSTN, PABX and other interfaces.

System transmission can adopt E1, ISDN, RS232/422, V.35 and other methods.

5.1.4.2 Qualified judgment

Should support PTT signal output, transmit audio signal output, receive audio signal input, SQL squelch signal input, ground signal and other wireless communication Communication interface; should support wired communication interfaces including magnet telephone, dedicated line telephone, satellite telephone, PSTN, PABX, etc.; support E1, ISDN, RS232/422, V.35 and other data communication interfaces.

5.1.5 Online self-check capability

5.1.5.1 Test process

5.1.5.2 Qualification judgment

When removing the smallest replaceable functional module, there should be an alarm indication on the monitoring and maintenance terminal, and it should be able to detect the disappearance of the module; it can be replaced after restoration After the minimum function module, the module should be detected again. All functional modules can be tested cyclically.

5.1.6 Support external clock source and internal clock source

5.1.6.1 Test process

Ensure that an external clock source (such as GPS clock signal) is used as the system clock.

5.1.6.2 Qualification judgment

Disconnect the external clock source, there should be an alarm indication on the monitoring and maintenance terminal, the system should be able to automatically switch to the internal clock source, and the system should operate normally;

When the external clock source is restored, the system should be able to automatically switch to the external clock source, and the system operates normally.

5.2 Wireless communication function test

5.2.1 Basic functions of wireless communication

5.2.1.1 Test process

Choose a normal working seat and configure more than 10 wireless channels on the seat.

Carry out receiving and sending selection and function test for each channel.

5.2.1.2 Qualified judgment

Each seat should be able to support more than 10 wireless channel operations at the same time. The seat should be able to provide multiple wireless channel status and transceiver options, and can send the user's selection to the central processing subsystem, and display it on the seat interface. The central processing subsystem should be able to handle the selection information is sent and received, and the corresponding voice channel is established or removed.

5.2.2 Wireless channel configuration

5.2.2.1 Test process

On the monitoring and maintenance subsystem, select the wireless module for parameter configuration.

Select a seat with permissions, and configure the selected wireless module on the seat.

5.2.2.2 Qualification judgment

The wireless channel on the seat should be able to be configured through the monitoring and maintenance subsystem, and it can also be configured by the user on the seat according to certain permissions.

Set.

5.2.3 Wireless channel idle, monitoring, command work mode settings

5.2.3.1 Test process

Choose a seat that can work normally, and set one or more wireless channels on the seat to idle working mode.

Set one or more wireless channels on the seat to monitor working mode.

Set one or more wireless channels on the seat to command work mode.

5.2.3.2 Qualification judgment

The wireless channel set to idle working mode should not be able to receive and send; the wireless channel set to monitor working mode should be able to Receive the signal for monitoring; the wireless channel set to the command mode should be able to send control and receive signal operations. Three mode settings the status display of the seats shall not be affected during the setting process.

5.2.4 PTT and voice signal transmission

5.2.4.1 Test process

Select the wireless channel for transmitting operation on the seat.

Activate PTT through external access equipment.

Voice communication through external access equipment.

5.2.4.2 Qualification judgment

It shall be able to transmit PTT and voice signals through the equipment inserted in the seat jack, and be able to operate wireless channels. Wireless channel PTT is activated After activation, the operating seats and non-operating seats should have corresponding status displays, and the status display can distinguish the operating seats from other seats.

5.2.5 SQL and voice signal transmission

5.2.5.1 Test process

The wireless interface establishes a connection with the set seats through the central processing subsystem, and the SQL signals and voice signals received by the wireless interface pass through the central processing subsystem is transferred to the seats.

Observe the SQL status display of the SQL signal on the seat.

The corresponding audio signal device on the seat has audio signal output.

5.2.5.2 Qualified judgment

The wireless interface SQL signal should have corresponding status display on the seat, and the voice signal should be able to be connected to the audio output device on the seat jack Output.

5.2.6 Comparison and selection delay function

5.2.6.1 Wireless channel delay function requirements

5.2.6.1.1 Test process

Use comparison configuration software or equipment to select a wireless module with comparison function for parameter query.

Modify the current send and receive delay parameters and set them.

Use the digital millisecond meter to perform the actual voice delay test and compare it with before setting.

5.2.6.1.2 Qualification judgment

The transmission and reception voice channels of each wireless channel should be able to set the delay size separately; the delay setting of each voice channel should be from 0 to 600 ms, the step value is 1 ms.

5.2.6.2 Wireless channel comparison

5.2.6.2.1 Test process

5.2.6.2.2 Qualified judgment

Divide several wireless interfaces with the same frequency into a group, and each group should be able to support up to 6 wireless interfaces. When there are multiple connections in the group when the port receives signals at the same time, it should be able to select the one with the best signal quality and transmit it to the corresponding seat according to a certain algorithm. Wireless channel comparison the calculation time should not exceed.200 ms.

5.2.7 Selective call

5.2.7.1 Test process

Select to activate the selective call function module on the seat.

The selective calling code is set and transmitted through the selective calling function module.

The central processing subsystem transmits 2 continuous audio pulses through the selective call wireless interface according to the selective call code.

5.2.7.2 Qualification judgment

Each pulse contains two tones that are emitted simultaneously. There are 16 monophonic sounds, each of which represents a different letter and number. Audio pulse duration the time should be 1 s ± 0.2 s, and the pulse interval time should be 0.2 s ± 0.1 s. The frequency tolerance of the transmitted audio frequency should be ±0.15%, which should be able to guarantee the machine the load decoder is operating normally.

5.2.8 PTT fault protection

5.2.8.1 Test process

Select the wireless channel on the seat, activate PTT, and make the wireless channel in the transmitting state.

Keep PTT sending long and keep timing.

Observe the PTT alarm information on the monitoring and maintenance subsystem.

5.2.8.2 Qualification judgment

When the PTT occupancy time of the wireless channel on the seat reaches the preset value, there should be alarm information on the monitoring and maintenance subsystem and the seat.

When the PTT signal is cut off, the channel should be able to restore the idle state.

5.2.9 PTT self-locking

5.2.9.1 Test process

On any seat in the same system, select any wireless channel and activate the corresponding channel PTT at the same time, so that the wireless channel is in transmission status.

Observe whether there is an occupancy display on the wireless channel of the same frequency for other seats in the system.

On other seats of the same priority level, activate the PTT of the wireless channel of the same frequency and observe whether it is in the transmitting state.

5.2.9.2 Qualified judgment

Any frequency should only allow one seat to occupy the PTT for transmission operation at any time. Once the PTT is activated by a seat, other allocations the seats placed on the channel should have corresponding information display, and the channel cannot be used for transmission.

5.2.10 Wireless channel side tone control

5.2.10.1 Test process

Turn on the side tone function of the seat.

Monitor the wireless transmission voice through the seat audio output device.

Turn off the side tone function of the seat.

Monitor the wireless transmission voice through the seat audio output device.

5.2.10.2 Qualified judgment

Turn on the side tone function of the seat, and it should be able to monitor the wireless transmission voice. Turn off the side tone function of the seat, and you should not be able to monitor the wireless transmission voice.

5.2.11 Set wireless communication priority or wired communication priority

5.2.11.1 Wireless priority setting

5.2.11.1.1 Test process

Set the priority of seats in the system.

Wireless communication through low-priority seats.

In low-priority seat communication, use high-priority seats to operate wirelessly.

Wireless communication through high-priority seats.

In high-priority seat communication, use low-priority seats to operate wirelessly.

5.2.11.1.2 Qualification judgment

The wireless communication of low priority seats should be interrupted by high priority seats. Conversely, wireless communication for high-priority seats should not be Priority seats interrupted.

5.2.11.2 Wired priority setting

5.2.11.2.1 Test process

The wired communication priority of the seat can be increased through the monitoring terminal or the seat operation.

After raising its own priority, perform wired communication.

5.2.11.2.2 Qualification judgment

When called by a high-priority seat, the seat should have a different prompt from ordinary communication.

5.2.12 Frequency coupling

5.2.12.1 Test process

Activate the voice communication function of multiple wireless communication channels on the seat.

Turn on the wireless coupling function of the wireless channel.

Use the wireless channel opened by the setting coupling function to communicate and observe.

Turn off the wireless coupling function of the wireless channel.

Use the wireless channel closed by the coupling function for communication and observe.

5.2.12.2 Qualified judgment

When the coupling function is turned on, there should be voice intercommunication between the wireless channels in the coupled state.

5.3 Wired communication function test

5.3.1 DA number preset

5.3.1.1 Test process

Observe the DA communication area of the seat terminal.

Set the DA information of the designated seats through the monitoring and maintenance subsystem (or seats with certain permissions), and the number should be greater than 100.

Update the seat configuration and observe the changes in DA information.

The DA button can be added through the DA setting function of the monitoring and maintenance subsystem (or through the seat with certain authority).

The DA button can be deleted through the DA setting function of the monitoring and maintenance subsystem (or a seat with certain authority).

5.3.1.2 Qualification judgment

It should be able to support more than 100 DA number presets; DA numbers should be able to be configured through the monitoring and maintenance subsystem, or by the user according to certain the permissions are set on the seats.

5.3.2 Support DA dialing mode

5.3.2.1 Test process

Select the button in the DA key area to perform calling operations.

Use external wired equipment to call the seat and perform the called operation.

Multiple wired simultaneous calls to the seat terminal.

5.3.2.2 Qualification judgment

The seat terminal should be able to carry out wired communication through the DA button and achieve zero call loss.

5.3.3 Support IA dialing mode

5.3.3.1 Test process

Select the IA communication module on the seat.

On the IA communication module, indirect calls are made through dialing.

5.3.3.2 Qualification judgment

The seat terminal should be able to carry out wired communication through the IA function.

5.3.4 Caller ID

5.3.4.1 Test process

Call the seat terminal through the seat or external terminal.

Observe the status of the corresponding buttons on the seat terminal of the caller.

Observe the status of the phone ring tone of the seat terminal.

5.3.4.2 Qualification judgment

It should be able to support the caller ID display of external calls and calls between seats, including voice prompts and graphical interface prompts.

5.3.5 Phone book

5.3.5.1 Test process

Re-preset the number information in the seat phone book by configuring the monitoring subsystem and send the information to the seat.

After the seat configuration is updated, observe the changes in the preset number information in the phone book.

Wired daily communication through the seat terminal.

Observe the information of dialed, received, and missed phone numbers in the incoming call information in the phone book.

5.3.5.2 Qualified judgment

It should be able to save the preset numbers and dialed, received, and missed numbers.

5.3.6 Automatic redial

5.3.6.1 Test process

Set the interval for automatic redialing of seats.

Use the seat to call a busy phone.

5.3.6.2 Qualification judgment

It should be able to redial after reaching the preset interval time.

5.3.7 Call queuing

5.3.7.1 Test process

Use 5 or more wired terminal devices to call the seat terminal.

Observe the corresponding button status and call queue list on the seat.

5.3.7.2 Qualification judgment

At the same time, the wired communication of the incoming seats should be displayed in the call list in the order of incoming calls.

5.3.8 Call Hold

5.3.8.1 Test process

Press the call hold key during a call to keep the current call.

Make or answer another call.

Use the call hold button to switch between the current call and the current call on hold.

To end the current call, press the call hold button again, the original call is restored.

5.3.8.2 Qualification judgment

The operator should be able to disconnect the current call temporarily, but not end the call, and be able to reconnect the held call later. When the original call is secured After holding, the holding party should be able to initiate a new call and switch between the held call and the current call.

5.3.9 Call transfer

5.3.9.1 Test process

Realize the normal wired communication process.

Press the call forward button.

Select the destination of the call forwarding.

5.3.9.2 Qualification judgment

It should be able to transfer ongoing calls to any system wired target.

5.3.10 Conference call

5.3.10.1 Test process

Start the call conference operation interface through the conference button.

Select a preset group or member in the meeting.

Press the "Start" button to start the conference call.

5.3.10.2 Qualified judgment

The telephone conference function should be able to store multiple telephone conference groups, and the group should be able to accommodate multiple members for conferences.

5.3.11 Call barge

5.3.11.1 Test process

Establish an ordinary wired voice communication through the seat.

Call this seat through the barge function of another seat.

5.3.11.2 Qualified judgment

When the called seat is busy, if a higher priority call arrives, the called seat should be able to keep the original call Conversations for high-priority calls.

5.3.12 Call Pickup

5.3.12.1 Test process

A wired communication terminal is used to call a seat in the system.

Activate the pickup function on another seat, and select the seat terminal that needs pickup.

5.3.12.2 Qualified judgment

Seats should be able to pick up calls from other seats that are ringing and not answer...