VT Headsets-Global Leading Manufacturer for Professional Headsets, UC Headsets, Hybrid ANC Headsets

1. DECT vs. Bluetooth: How to choose the right wireless headset at your office & home worker?

DECT vs. Bluetooth: Security

Security of your wireless conversations is a natural concern DECT uses a 64-bit encryption, and Bluetooth has a 128-bit encryption.

So once the headsets are appropriately paired with their base stations, the chance of someone effectively listening in on a call is virtually nil.

DECT vs. Bluetooth: The Distance Difference

One of the biggest differences between DECT and Bluetooth is that DECT has a far greater range: around 100 meters (330 feet).

Bluetooth range depends on which class is used:

VT9602/VT9600 BT has a range of about 30 meters (98 feet).

VT 9500BT is about 10 meters (33 feet).

DECT vs. Bluetooth: Connectivity Considerations

Another difference is that a DECT headset can only connect to one other device – namely the base station that provides a connection to the phone network.

Pair Up to 4 Headsets for Conference Call.

A single Bluetooth device can connect to up to2 other devices simultaneously.

So the same Bluetooth headset could be used to connect to a user’s mobile phone,computer, tablet, and desk phone.

2. What are advantages of VT headset compared with others?

Reliability , Hearing Protect Tech(files support) ,Good Headphone Control

3. How to pair the VT bluetooth headset to bluetooth device or smart phone/ laptop?

1) Press the multi-function button for more than 6s, the LED will flash red and blue alternately,which indicates the headset is in pairing mode.

2) Search Bluetooth device on your smart phone/laptops.Open “Bluetooth” menu and press“discover” or “add” to search VT9702/9712 BT on your smart phone/ laptop.

3) When “VT9702/9712 BT” showing on your Bluetooth devices list, please click it to begin the pairing. Sometimes, the PIN code “0000” is required.

4) If pairing is successful, the LED will turn on blue and VT9702 BT icon will show on your smart phone/laptop.
You can make calls or listen to music now. Next time, you don’t need to do pairing again, just click VT9702/9712 BT icon to make connection.

4. How to settle down unpair DECT between base and headset?

Renew to pair with the headset: Consistently press the PAGE switch for 5S, the headset with paired light will flash to search the headset.

Connection will be successful when the LED power off at the same time.

Then you can hook off/hook on,and the battery indicator lights up after 20s (if pairing failed after 2mins searching, it will automatically quit the searching mode, then need to repeat the above operation).

1) Consistently press the PAGE switch for 5S

2) the headset with paired light will flash to search the headset

3) turn on the headset, then consistently press the headset mute button untilthe headset status LEDflash, then the headsets are in the paired status.

5. How to make conference call?

9000 DECT™/9200DECT/9400DECT are able to pair with a total of four Headsets for conferencing:

one Master and three Secondary Headsets.Connecting the second and additional Headsets

5.1. Using the Master Headset which is already linked with the Base, press the PAGE switch on the Base for 5s.

The Base starts searching for a Headset to pair.

Press the second Headset’s Mute button until the Headset status LED flashes, indicating the Headset is in pairing status.

Connection will be successful when the LED turns solid on.

6. How to take care of your headset?

In today’s world, headsets are considered a necessity and the only companion on long boring hours.

It is also important that you treat them with care and respect they deserve.

Keeping them in their best condition can also be good for your hygiene and audio fidelity.

Before purchase, you should:

Make sure you buy from legitimate manufacturers or those with business permits. Fraudulent headphones can damage your ear.

Consider the size of your eartips, if applicable, and making sure you’re using ones that fit your ears comfortably and with a minimum amount of pushing and squeezing.

Be able to replace certain parts (like the ear cushions or the ear tips) rather than using the damaged or worn originals.

While using, you should:

Make sure to follow simple precautions on properly putting them

Avoid very high or very low temperatures

For storing, you should:

Store your headphones in a clean, dry place and make use of the supplied case

Check the instruction indicated with the information booklet that comes with your kit.

7. How to choose the best telephone or office headsets?

Many years ago ,the choices of telephone or office headsets for your home or office were few, and vendors were limited.

Now with the advent of new technology and the internet popular, the choices are great, and suppliers are plentiful.

Choosing the best headsets for your application, and finding a company that knows and understands the product with the ability to support your needs before and after the sale has become essential.

Choosing the appropriate headsets can be accomplished by considering the grade, model, and style of the headset and by selecting an experienced and reputable suppliers.

8. What is the QD plug and what is its purpose?

QD is a universal plug of all universal Plantronics QD and Jabra QD Cable.

It enables headset to connect with various communication systems (Ip phone, mobile phone and computer), which makes it really versatile.

9. Which VT headset models can be compatible with Microsoft Teams and Skype for Business ?

VT9605BT,VT9702BT,VT9712BT,VTX200,VTX208,VT6909Lync USB,VT5009Lync USB.

10. What major soft-phones are the headsets compatible with?

Microsoft Lync、 Microsoft Teams 、Skype for Business、 Cisco Jabber、Avaya、3CX、CounterPath、Zoom、Skype.

11. Does the VT9605 BT headset come with the Bluetooth adapter?

Yes, the headset is optionally equipped with the BT100U.

12. What are the specific steps for the Bluetooth headset to be compatible with major UC platforms?

VT9605 can be equipped with bluetooth adapter, which can work seamlessly with the UC platform and achieve call control.

The BT adapter are pre-paired with the headset, just need to plug it into the computer, then you can easily answer and end the calls for Microsoft Teams and Skype for Business using multi-function button on the headset.

If combined with UCM software, you can also handle the calls for other softphones such as 3CX, Cisco Jabber, Avaya, and Bria.

13. What is the compatibility of EHS80 cables?

EHS 80 Cables Adapter Support:

Yealink, Polycom, Snom, Flying Voice USB Series Phones

• Compatible with VT, Poly (Plantronics), Jabra, Sennheiser DECT Headsets

• Equivalent to Yealink EHS40 Adapter & Jabra 14201 - 30
• Yealink USB Series Phones: T41S,T42S,T46S,T48S,T42U,T43U,T46U,T48U,T53,T53W,T54W,T57W,T58A,T58W,VP59.
• Polycom USB Series Phones: VVX250 Via USB,VVX350 Via USB,VVX401 Via USB,VVX411 Via USB,VVX450 Via USB,VVX500 Via USB,VVX501 Via USB,VVX600 Via USB,VVX601 Via USB.
• Snom USB Series Phones: Snom715 Via USB,Snom720 Via USB,Snom 725 Via USB,Snom 760 Via USB,Snom D335 Via USB,Snom D375 Via USB,Snom D385 Via USB,Snom D715 Via USB,Snom D717 Via USB,Snom D725 Via USB,Snom D735 Via USB,Snom D745 Via USB,Snom D765 Via USB,Snom D785 Via USB.
• FlyingVoice USB Phones: FIP13G,FIP14G,FIP15G.

14. What is your compatibility for the VT2000 USB(02) headset?

It can work with the Microsoft Teams, skype for business,3CX,Cisco Jabber, Bria, Avaya,Zoom, but it don’t support answer/end calls for that.

15. Is your VT9400 DECT headset compatible with Microsoft Teams?

Yes, It can be compatible with the Microsoft Teams without any driver, the base station connects the computer by one usb cable.

16. Which item has the function of Redial & Reject & hold?

VTX200 and VTX208 USB Headsets.

17. What are the specific steps for operating the function of Redial & Reject & hold?

Redial: In idle state, double-click the answer button to redial the last call.

Reject: In idle state, there is an incoming call,double-click the answer button to reject it.

Hold: There is no third-party call during the call, please long press 2s to hold current call, and click to resume the call; there is a third-party call during the call, Please long press 2s to hold the first call and answer the second call, click the answer button to resume first call and hang up the second call.

18. What is the SoundGuard technology ?

This is the same as the Hearing Protection.

19. What is the hearing protection technology ?

It means sometimes the audio is too loud, it will make hearing damages,So we add the electronic cuicirt to make the loud audio to low level to protect user hearing.

20. What is the Sound Tube technology ?

This means the microphone is on the headset not on the microphone boom, you could see the picture,This product is less and less to use.

21. What is the Digital Signal Processing technology ?

It means we have programe audio code, like EQ and microphone noise canceling function.

22. What is the Acoustic shock Protection ?

This is the same as the Hearing Protection.

23. What is the difference between UNC and NC ?

NC means the microphone noise canceling is normal, UNC means the microphone noise canceling function is super.

24. What is the anti static microphone written for the VT5009 model?

This is microphone feature, all microphone we use have this feature.

25. What is the 6th generation CVC technology ?

This is CSR chipset technology.

It means Clear Voice Capture,Various types of reverberation noise are suppressed through the built-in noise elimination software and microphone of the headset.

26. While making a dual connection, while connecting with a PC or another device iPhone Unable to connect with Android

Bluetooth headset can connect with two bluetooth device at the same time, But as you know the VT9712 have the base, Normally the headset have connected with the base if base is power on, so if headset have connected with the base, and it only can connect only with one mobile phone.

If the headset have not connected with the base, it can connect with two mobile phone, and it also can connect with the Andoid mobile phone.

27. For model VT6909 it says Microphone type ECM. What is this ECM ?

ECM means electret condenser microphone.

28. What do you mean by wide-band audio for exceptional sound quality?

As you know the narrow band is 300Hz-3.4KHz, it isn’t clear sound. wideband can support 150Hz-6.8KHz for speaker mode, and for the music mode wideband can support 20Hz-20KHz, it will make user get more clear when enjoy music.

29. Does it work with Zoom or Google Meet?

Yes, it can support the audio for the Zoom and Google Meet.

30. What is the compatibility of the QD-RJ09 cables?

We have three type of the QD-RJ09 cables, they can be applied for the most of the IP Phones like:

Yealink, Cisco, Gigaset, Avaya, Snom, Vtech, Grandstream, Panasonic, NEC, Mitel,Alcatel, Polycom, Sangoma, Fanvil, Aastra, Atcom, etc.

For more details, please check the link: /u_file/2307/file/25/727391c8e9.pdf

31. How to make your soft-phone work with VT headsets?

Q: How to Configure VT Headsets to work with 3CXPhone V16 for Windows

R：You can easily configure the VT Headsets to work with 3CXPhone for Windows by following this guide. Then it is convenient to answer/end calls, mute/unmute calls and manage the volume with VT headsets.

Install the UC Manager

1) Install the UC Manager on your PC.

2) Start 3CXPhone for Windows after the installation finishes.

3) The VT device is now ready to be configured as an audio device in the 3CXPhone for Windows.

Configure the 3CXPhone for Windows

1) Launch the 3CXPhone for Windows.

2) Go to “Settings” > “Audio Options” > “Microphone”, “Speaker” and all select the new VT Headsets.

Q: How to Configure VT Headsets to work with Avaya workplace for Windows

R: You can easily configure the VT Headsets to work with Avaya Workplace for Windows by following this guide. Then it is convenient to answer/end calls, mute/unmute calls and manage the volume with VT headsets.

Install the UC Manager

1) Install the UC Manager on your PC.

2) Start Avaya Workplace for Windows after the installation finishes.

3) The VT device is now ready to be configured as an audio device in the Avaya Workplace for Windows.

Configure the Avaya Workplace for Windows

1) Launch the Avaya Workplace for Windows.

2) Go to “Settings” > “Audio Options” > “Microphone”, “Speaker” and all select the new VT Headsets.

Q: How to Set up VT USB Device to Work with Zoom for Windows?

1) Run Zoom.

2) Click on your profile picture at the top of the Zoom window.

3) Select Settings.

4) For each of the Speaker and Microphone settings, select the VT Headset device.

How to Set up VT USB Device to Work with Microsoft Teams?

[Resolution]

1.) Click the Settings icon in the top-right corner of the Skype for Business window.

2.) In the left-side options, click Audio Device.

3.) In Audio Device, select your VT device.

32. How to Pairing your VT DECT headsets?

Open the headset make sure the headset into pairing mode.

VT9000 DECT, VT9300 DECT, VT9400 DECT, Power on the headset and press and hold the mute button 5s, Headset will into pairing mode (blue led will flash).

VT W320, Slide the switch to power on and make the headset into pairing mode (the blue led of pairing will flash).

Make Base into pairing mode, Power on the Base with power adapter, and press and hold 5s and the pairing blue led flash, it means the Base have into pairing mode.

When base and headset all into pairing mode, they will be auto paired.

33. Do you have EHS cables for Jabra DECT Headsets and desk phones(such as polycom, Avaya, Ciso, Yealink, Mitel, Snom, etc)?

Yes, we have these EHS Cables used for Jabra DECT headset and different brand of desk phones:

EHS4: Equivalent to Jabra 14201-10 EHS Adapter.

Aastra 6771,6773/ip,6775/ip,7434ip,7444ip,5370,5370ip,5380,5380ip,6739i¹,6753i(53i),Aastra 6755i(55i),6757i(57i),6757iCT(57i).

SIEMENS OpenStage 30/40/60/80,Plus OptiPoint600,OptiPoint 500 Basic/Std/Adv/Eco,OptiPoint 410/420 Std/Adv.

TIPTEL 274/275,31XX.

EHS5: Equivalent to Jabra 14201-19&14201-20EHS Adapter.

Avaya 2420,5420,5610,5620,5621,5625,4610/4610SW - Firmware> 1.8,4620/4620SW - Firmware> 1.8,4621/4621SW - Firmware> 1.8,622/4622SW - Firmware>1.8,4630/4630SW - Firmware> 1.8,4625/4625SW - Firmware> 1.8;

Avaya 1408,1416,2410,5410,6416D+M,6424D+M,1608¹,1616¹,9404,9408,9504,9508,9608,9610,9611G,9620/20C/20L,9621G,9630/30G,9640/40C/40G,9641G,9650/50C, 9670³.

MITEL (SHORETEL) IP212,IP230,IP230g,IP265,IP420,IP480,IP480g,IP485g,IP530,IP560,IP560g,IP565,IP655.

TOSHIBA DKT2001,DKT2010-S,DKT2010-SD,DKT2020-S,DKT2020-SD,DKT2020-FDSP,IPT2008-SDL,IPT2010-SD,IPT2010-SDC,IPT2020-SD, DKT3007-SD, DKT3010-S,DKT3010-SD,DKT3014-SDL,DKT3020-S,DKT3020-SD,DP5008,DP5018-S, DP5022-SD,DP5032-SD, DP5122-SD,DP5130-FSDL,DP5130-SDL,DP5132-SD, IP5022-SD,IP5122-SD, IP5122-SDC, IP5131-SDL,IP5132-SD, IP5631-SDL,IP5522-SD, IP5622-SD.

EHS6: Equivalent to Jabra 14201-16 EHS Adapter.Cisco Unified IP Phone 7942G,Cisco Unified IP Phone 7945G,Cisco Unified IP Phone 7962G,Cisco Unified IP Phone 7965G¹,Cisco Unified IP Phone 7975G¹.

EHS7: PANASONICKX-UT670,KX-UT133,KX-UT136,KX-DT546/560/670,KX-NT543/546/556

EHS9: Equivalent to 14201-09/14201-36 EHS Adapter. Alcatel-Lucent IP Touch 4028¹,IP Touch 4038¹,IP Touch 4068,Alcatel 9-Series (UA),4029,4039.

EHS10: Avaya J series;Grandstream GXP16XX,GXP17XX,GXP21XX.

EHS13: Equivalent to 14201-17 EHS Adapter.Polycom CX Series phone,SoundPoint ® IP 650 phone,SoundPoint ® IP 560 phone,SoundPoint ® IP 550 phone,SoundPoint ® IP 670 phone,SoundPoint ® IP 430/450 phone,SoundPoint ® IP 320/321¹ phone,SoundPoint ® IP 330/331¹ phone,Soundpoint ® IP 335 phone,VVX Series phone (Except models Via USB/Via Bluetooth).

EHS15: FANVIL X2,X3SP,X3SG, X3U,X4,X4G,X4U,X5U-R,X5U,X6U,X7,X7C,X210,X7A,X7A+CM60,X210.

EHS18: Sangoma S400,S405,S500,S705.

EHS19: Equivalent to Yealink EHS36 Adapter. Yealink T27G,T27P,T29G,T40P,T40G,T41P,T41S,T42G,T42S,T46G,T46S,T48G,T48S.

EHS21: Digium(Sangoma)D40,D45,D50,D60,D62,D65,D70,D80.

EHS22: Equivalent to 14201-45 EHS Adapter.Alcatel-Lucent IP Touch 4028 EE,IP Touch 4038 EE,IP Touch 4068 EE,8028,8038,8068,8058S,8068S,8078S.

34. We're using yealink USB Phones, do you have EHS cables for DECT Headsets and such USB desk phones?

We have an EHS80 cable adapter,equivalent to Yelink EHS40 adapter and Jabra 14201-30, which supports Yealink-Snom-Polycom USB phones and VT-Plantronics-Jabra-Sennheiser DECT headsets. The followings are compatible models of desk phones:

Yealink USB Series Phones:
T41S,T42S,T46S,T48S,T42U,T43U,T46U,T48U,T53,T53W,T54W,T57W,T58A,T58W,VP59.

Polycom USB Series Phones:
VVX250 Via USB,VVX350 Via USB,VVX401 Via USB,VVX411 Via USB,VVX450 Via USB,VVX500 Via USB,VVX501 Via USB,VVX600 Via USB,VVX601 Via USB.

Snom USB Series Phones:
Snom715 Via USB,Snom720 Via USB,Snom 725 Via USB,Snom 760 Via USB,Snom D335 Via USB,Snom D375 Via USB,Snom D385 Via USB,Snom D715 Via USB,Snom D717 Via USB,Snom D725 Via USB,Snom D735 Via USB,Snom D745 Via USB,Snom D765 Via USB,Snom D785 Via USB.

FlyingVoice USB Phones:
FIP13G,FIP14G,FIP15G.

35. Do you have EHS cables for poly DECT Headsets and desk phones such as Avaya, Grandstream, Fanvil?

Yes, We have an EHS17 cable adapter,which is equivalent to APV-63/APD-80,supporting Avaya,Grandstream,Fanvil Phones and Poly DECT Headsets.

Avaya:
1408/1416, 1608/1616, 9404/9408, 9504/9508, 9608/G 96x1/G,J139/J169/J179.

Grandstream:
GXP16xx/GXP17xx/GXP21xx.Fanvil:X4,X5,X6.

36. How to find VT headsets full compatibility list?

How can I know which soft-phone, IP phone can work with VT headsets?

Please refer to below link to download the full compatibility list:

37. How to Configure VT Headsets to work with 3CX Phone V16 for Windows?

You can easily configure the VT Headsets to work with Avaya Workplace for Windows by following this guide.

Then it is convenient to answer/end calls, mute/unmute calls and manage the volume with VT headsets.

Install the UC Manager

1) Install the UC Manager on your PC.

2) Start Avaya Workplace for Windows after the installation finishes.

3)The VT device is now ready to be configured as an audio device in the Avaya Workplace for Windows.

Configure the Avaya Workplace for Windows

1) Launch the Avaya Workplace for Windows.

2) Go to “Settings” > “Audio Options” > “Microphone”, “Speaker” and all select the new VT Headsets.

38. How to Set up VT USB Device to Work with Zoom for Windows?

1.) Run Zoom.

2.) Click on your profile picture at the top of the Zoom window.

3.) Select Settings.

4.) For each of the Speaker and Microphone settings, select the VT Headset device.

39. How to Set up VT USB Device to Work with Microsoft Teams?

[Resolution]

Procedure:

1.) Click on your profile picture at the top of the Teams window.

2.) Click Settings->Devices.

3.) Select your VT USB device under the Audio devices field

40. How to Set up VT USB Device to Work with Skype for Business?

[Resolution]

1.) Click the Settings icon in the top-right corner of the Skype for Business window.

2.) In the left-side options, click Audio Device.

3.) In Audio Device, select your VT device.

41. How to Pairing your VT Bluetooth headsets?

Open the headset make sure the headset into pairing mode.

VT9500BT, VT9600BT Series, VT9712BT, VT9800BT, press and hold the power on button 6s, It will into pairing mode.

VT9605BT, VT X300BT, VT B320, Slide the switch to power on and make the headset into pairing mode.

Open your mobile phone or other BT device Bluetooth function, and search the BT headset, when you find the VT headset, you could choose it and pairing it, it will connect.

If you pairing another BT device, you need turn off the first BT device Bluetooth function, and make the headset into pairing mode again.

Follow the 2), after have connect, turn on the first BT device Bluetooth function, and connect the headset.

42. How to switch the Chinese voice prompts of the VT9500 BT，VT9600 BT,VT9602 BT and VT9603 BT to English voice prompts?

Turn on the headset, then press the volume up and volume down keys at the same time for 5 seconds. After a beep, the Chinese prompt will switch to the English prompt.

43. How to Connect your VT DECT headsets to IP Phone?

Please see the list of web site:

https://en.vbet.cn/wp-content/uploads/2023/03/VT-DECT-and-EHS-Compatiblity-Map_2023.xls

44. How to Connect your VT RJ headsets to IP Phone?

Please see the list of web site:

https://en.vbet.cn/download/vt-rj-headset-alignment-checking-form-compatibility/

45. What is ENC technology?

ENC (Environmental Noise Cancelling)：

The microphone only picks up the user's speech, eliminating the surrounding background noise, so that the other person can hear the call more clearly.

46. What is ANC technology?

ANC (Active Noise Cancelling):
is a technology that uses additional microphones (either inside or outside of the ear cup) to pick up background noise and invert it by 180 degrees. The inverted noise cancels out the unwanted background noise leaving just the original audio the user wants to hear.

47. How to connect the speaker phone to a computer or mobile device?

Step 1.

Power on the Speaker phone, and then Press and hold the Bluetooth button on the speakerphone for two seconds to begin pairing.

Step 2.

Enable Bluetooth on your computer or mobile device and select "CS61" from the list of available devices. The speakerphone will say "connected" when pairing is complete.

48. How do I answer a phone call using the speakerphone?

After connecting the speakerphone to your phone, you can answer an incoming call by tapping the Answer Call button once.

To reject an incoming call or end call, by tapping the End Call button once.

49. Why doesn't my computer recognize the speakerphone?

1. Please make sure it's properly connected to your computer by checking that the cables are securely plugged in and the speakerphone is turned on.
If you're connecting via Bluetooth, try keeping the speakerphone within about 10m of your computer and has at least 30% battery for a stable connection.

2. Check your computer's audio settings.
Make sure that your computer is set to use the speakerphone as its audio output device.
Note: If you experience issues getting your system to recognize the speakerphone, please try the following steps depending on your device’s operating system (Windows or Mac).

For Windows

Go to Settings > Privacy > Microphone, then turn on "Allow apps to access your microphone".
Select the apps on the list that you want to have access to the microphone.
Once you have access, open the apps you’re planning to use and ensure that you have selected the CS61 as the active speaker and active microphone from the list of available options.

For macOS

Go to the Apple menu > System Preferences > Security & Privacy, and select the Privacy tab.
Select Microphone from the list of options on the left side of the page.
Select the apps you want to enable microphone access for.
Click the box next to the app's name to enable microphone access for that application.

3. Open the app you want to use with the speakerphone.
You may need to select your speakerphone (CS61) as the audio output, and its built-in microphones (CS61) as the audio input in the settings of the app you’re using.

50. What are the benefits of wearing a headset?

There are many benefits to using a headset, which can free up your hands and easily deploy multi-tasking. A headset with noise-canceling function can effectively reduce background noise and make your call sound clearer. Overall, using a headset can improve communication, productivity, and comfort during long calls or virtual meetings.

51. My headset does not seem to have any noise cancellation, how can I improve this?

Not all headsets have a noise canceling feature; First, you need to check whether the headset you are using has a noise canceling feature. And How does the headset achieve the noise reduction function.

1. If the noise reduction is performed through the directivity of the microphone (no additional noise reduction algorithm), Pls check whether the hole behind the microphone is blocked. If it is blocked, it will lose its original directivity, and it is completely impossible noise reduction.

2. If the noise reduction is performed by a single MIC noise reduction algorithm, generally their noise reduction ability is relatively stable, but do not let the microphone be too close to the noise source, Otherwise the noise reduction ability will not be so good.

3. If the noise reduction is performed by the dual MIC noise reduction algorithm, Pls check that its secondary MIC (the noise reduction MIC, generally on the outside of the headset body) cannot be blocked.

52. Which headset version should I choose? Mono or duo?

The headset version choice may depend on both your working environment and individual preferences. The mono headset enables contact with your colleagues at work, while binaural version isolates you from the noises coming from open space rooms. binaural version can provide a higher level of ear comfort.

53. How do I get the best fit with my VT headset?

To get the best fit, adjust the headband so that it fits your head comfortably.

When using the microphone,Please place the microphone close to your mouth (2 cm or 3/4 inch)

54. What is a busy-light?

A busylight is a light built into a headset that activates if you are on a call, or if you self-activate it, to let others know you are busy.

55. What is HD Voice?

HD Voice refers to high-definition voice quality for audio. Call technology that carries voice data in a wider band of frequencies. Also known as 'wideband'.

56. What are the different of USB01 Cable /USB02 Cable /USB03 Cable /USB04 Cable?

USB01 Cable has three controls, It has the function of mute microphone and Volume adjustment.

USB02 Cable has four controls, It has the function of mute microphone,mute speaker, and Volume adjustment.

In addition to the functions of microphone mute and volume adjustment, USB03 and USB04 can also support Microsoft teams to answer/end calls.

USB04 Cable has rubber painted surface to make surface smooth in handfeel.

57. What is the difference between RJ09(01), RJ09(02), RJ09(03)? Which phones are compatible with each?

RJ09(01)：without tube. It can apply to mainstream IP phones and analog phones.

RJ09(02)：with yellow tube. It only can apply to Cisco Phone.

RJ09(03)：with blue tube. It can apply to mainstream IP phones like Yealink, Grandstream, Huawei, Htek,Xorcom,Siemens,Snom etc. Please refer to below link to download the full compatibility list: https://www.vbetglobal.com/u_file/2307/file/25/727391c8e9.pdf

58. What is the resolution of the V100 camera?

Resolution is up to 1920x1080 with frame rate up to 30fps.

59. How to switch the Chinese voice prompts of the VT9500 BT, VT9600 BT, VT9602 BT and VT9603 BT to English voice prompts?

Turn on the headset, then press the volume up and volume down keys at the same time for 5 seconds. After a beep, the Chinese prompt will switch to the English prompt.

60. Smart Cord Compatibility with different Desk Phones:

61.What is the storage temperature for wireless headsets for a long time?

62.Compatibility overview for major VT Bluetooth headsets (VT9605BT,VTX300BT,VTB320BT,VT9200BT, VT9800BT)

1.VT9605BT,VTX300BT,VTB320BT:

compatible with MS Teams/Skype for business/MicroSIP/Linkus by BT100U;

work seamlessly with 3CX/Avaya Workplace/CounterPath Bria/Genesye by BT100U & UC Bridge. (*UC Bridge is a dedicated device management software designed for VT headsets.)

2.VT9200BT, VT9800BT:

compatible with MS Teams/Skype for business by BT50U.

63. What is a QD-Y Trainning Cable, and how to use it?

A QD-Y Training Cable is an accessory used in scenarios where trainings of phone calls are essential (like in call centers). QD (Quick Disconnect) refers to the type of connector used in professional headsets, allowing easy and quick connection and disconnection of the headset from the phone or amplifier. The "Y" in "QD-Y" means the shape of the cable, which is split into two branches, allowing two headsets to be connected to a single communication device.

To use a QD-Y Training Cable, start by connecting the single QD connector to deskphone or communication device. Then, attach two headsets to the QD connectors on the Y branches of the cable. If the cable has an inline control, configure it if necessary.

64. Does VT device work with the Microsoft Teams app for iOS and Android?

VT device is compatible with the Microsoft Teams desktop version on a computer, not with the mobile app version. If you use your VT device with the MS Teams app on your iOS or Android smartphone, features like call control and Microsoft Teams LED notifications are not officially supported and may not function as intended.

65. What is a busylight?

A busylight is an indicator light built into a headset that turns on when you are on a call or manually activated, signaling to others that you are busy.

66. What is firmware?

Firmware is the software that controls a device's operations. VT releases firmware updates to enhance performance and add features to your device. To keep your VT device working optimally, it's recommended to update to the latest firmware.

67. What is HD Voice?

HD Voice refers to high-definition audio quality, transmitting voice data over a wider range of frequencies, also known as 'wideband.'

68. What is voice guidance?

Voice guidance consists of voice announcements from a device to assist users in operating it.

69. How to ensure audio in the VT speakerphone function well, after connecting to computers?

After connecting, access your computer’s audio settings and select the VT speakerphone as the playback device.

70. Can new VT Bluetooth device be compatible with other devices that have older Bluetooth versions?

A new VT Bluetooth device is fully backward compatible with other Bluetooth devices having older Bluetooth version, for example, Headset Profile (HSP) version 1.2, Hands-Free Profile (HFP) version 1.5, and Bluetooth version 2.0 or later.

71. Can I use Microsoft Teams when using a built-in Bluetooth connection?

Try using built-in Bluetooth with Microsoft Teams; you might find its functionality and performance satisfactory.

72. What is a Bluetooth adapter?

A Bluetooth adapter is a plug-and-play device that connects to a computer via a USB port, allowing the computer to establish Bluetooth connectivity with a VT device.

73. What is an audio codec?

An audio codec compresses and decompresses digital audio data, minimizing file size while preserving high audio quality. Codecs are characterized by bit depth (bits), bitrate (Kbps), and sampling rate (kHz). Bluetooth connections have limited bandwidth, which, if exceeded, can degrade connection stability and audio quality. Various audio codecs, such as SBC, Qualcomm® aptX™, and AAC, are optimized for Bluetooth transmission. For optimal performance, both the transmitting device (e.g., your smartphone) and the VT device must support the same codecs.

74. How many paired Bluetooth devices does the VT speakerphone remember?

If the VT speakerphone isn't in shared use mode, it retains the information for up to 8 devices and their names.

75. What does paired mean?

Pairing occurs when a headset or speakerphone and a phone identify each other to enable future connections for transferring information, such as calls and music. This process is necessary before a headset or speakerphone can connect to your device.

76. What does connected or disconnected mean?

Connected: The headset or speakerphone and phone are communicating. Ensure that the devices are paired first and remain within Bluetooth range, approximately 10 meters (33 feet), to maintain the connection.

Disconnected: The headset or speakerphone and phone are not communicating, potentially because one or both devices are turned off or out of Bluetooth range. These disconnections are logged in your Last Connected Location history to help you recall where and when you last used your headset.）

77. What level of wireless security is provided by Bluetooth technology?

Bluetooth security measures provide robust protection, on par with other voice communication systems like PSTN, VOIP, or cellular networks. There is minimal chance of unauthorized access to a Bluetooth voice call, such as an intruder intercepting Bluetooth signals. Even in the unlikely event that data is intercepted, extracting meaningful information from it would demand considerable expertise and effort. Countless VT Bluetooth devices are used daily, facilitating secure and hassle-free voice communication. To learn more about Bluetooth wireless security, refer to the VT whitepaper accessible in the Technical whitepapers section）

78. What are Bluetooth classes, versions, and profiles?

Class: The range of a Bluetooth device is determined by its class. When connecting devices of different classes, the effective range will be that of the lower class. Operating distance can also be influenced by factors such as interference and device positioning.

Version: Bluetooth technology continues to advance with new versions, all of which are backward compatible. Devices don’t need to have the same Bluetooth version to connect; they will operate using the features supported by both devices.

Profile: Bluetooth profiles define the types of data that can be exchanged between devices. For proper compatibility, both devices must support the same profiles. Check each device’s technical documentation to verify the supported profiles.

For further information, visit the official Bluetooth website: [www.bluetooth.com].

79. How to turn off the mute reminder tone of W320 Dect Headsets?

1.Set the Base to IP Phone mode.
2.Press and hold the volume up and down button for 2s at the same time , after releasing the buttons, you will hear the "didi" tone, it means the mute reminder tone has been turn off.

80. How to pair VT9000/VT9300/VT9400 DECT headsets with its base?

Press the PAGE (item 8 on page iii) switch for 5s. The Audio Link Indicator at the front of the Base will flash, indicating it's searching for the headset. Next, press the Mute button on the headset until the Headset Status LED flashes: the headset will be in pairing mode. The pairing will be successful when the Audio Link Indicator and Headset Status LED are both turned off.

81. What is the density issue for wireless DECT headsets and Bluetooth headsets?

Density refers to the number of devices that can operate simultaneously without degrading audio quality.
DECT headsets are optimized for higher-density settings like call centers, where multiple headsets can connect without interference.
Bluetooth headsets are more vulnerable to interference when many devices share the 2.4 GHz band, leading to potential connection drops or audio issues in busy environments.

82. Why are DECT headsets better suited for high-density office environments than Bluetooth headsets?

DECT headsets operate in a dedicated 1.9 GHz frequency band, allowing them to support more active users in the same space with minimal interference.
Bluetooth headsets, on the other hand, use the 2.4 GHz band, which is shared with devices like WiFi routers, making them more prone to interference in crowded areas. In a space of 80-100 square meters, DECT headsets operating under the EU frequency standard can support approximately 25 units（1 DECT headset + 1 DECT base) in wideband mode or 50 units in narrowband mode without interference. Under the US frequency standard, they support around 12 units in wideband and 25 units in narrowband. For Bluetooth technology, the ideally supported is around 40 Bluetooth headsets without interference.

83. Why does the VT9200 headset sometimes disconnect from Bluetooth devices and lose signal?

Dual Connectivity Issue: If the VT9200 headset is connected to both a computer and a mobile phone (dual connectivity), and the phone moves out of the Bluetooth range for approximately 20 minutes, the headset may not automatically reconnect when the phone returns to the Bluetooth range. In this case, a manual reconnection is required.

Power Saving Feature: The VT9200 headset will automatically power off 15 minutes after being disconnected from any Bluetooth device to save energy. This may cause the headset to lose signal and require a manual restart or reconnection.