07-07-2021 07:07 AM
A: There are three options, you may:
1. Plug the USB HD Adapter into the computer
Note: If your computer only has USB-C available, you can purchase an additional adapter to convert the USB HD Adapter from USB-A to USB-C.
2. Connect via Native Bluetooth if your computer has Bluetooth capability.
3. Connect directly via USB cable
07-15-2021 06:23 AM
Is there a way to improve the audio quality when using the USB cable?
It seems to be like 16kHz or worse, "tape recorder" quality according to windows.
07-19-2021 06:42 AM - edited 07-19-2021 06:43 AM
Hi Adam,
Could you provide me any more information to help determine the root cause of the issue?
Are you using the USB cable which came provided with the Cisco Headset 730?
Which device are you connecting to? A Windows PC?
Are you able to hear it at higher quality if you use native bluetooth on the device? Also are you able to hear it in higher quality with the provided USB Adapter (dongle) or with the 3.5mm aux cable?
Additionally, I can assist you further over Webex. My username is davidfit, so feel free to message me directly on Webex if you have access to that.
David Fitzgerald
07-19-2021 07:14 AM
Hi David,
I searched for you on Webex but was not able to find you as a contact.
I am using a Windows PC yes, and the supplied USB cable. The sound quality is not very good, and the sound control panel shows this as the only option for quality:
The 3.5mm sounds fine, but it is not a TRRS connection, so there is no microphone available that way.
The USB adapter does sound just fine, with some latency to the audio. Bluetooth as well sounds okay until communications are engaged, then the headset switches profiles which turns the audio into lower quality mono audio. I believe that's a limitation of Bluetooth, and not much to be done about it.
08-16-2021 04:11 PM
@davidfit Any thoughts? I haven't been able to get it to work any different
08-24-2021 07:52 AM
Just curious if you notice any improvement if you do the firmware upgrade (like here https://upgrade.cisco.com/accessories)
08-24-2021 08:18 AM
08-24-2021 10:18 AM
Please let us know if you see any improvements.
Also, was your popup from Webex or from the site I provided or something else? Just curious.
08-24-2021 10:43 AM
The popup was from Webex, but it immediately put the USB adapter into DFU mode then said the headset was unplugged.
I went to the website which updated the adapter, but said the headset had the latest software.
I don't see how that would have impacted the USB connection, which still shows tape recorder quality only.
08-31-2021 08:11 AM
If you are talking about the software download for the 730 on https://software.cisco.com/ then the confusing thing is the version number 2-3-0001-13 is for a zip file which contains a multitude of firmware including the 730 firmware with version 1-7-0-138. So they do actually line up correctly even though it is misleading.
08-31-2021 08:14 AM
I have tested it and experienced the same audio quality drop via USB myself, however I don't think this is a bug, this is by design. The 730 is primarily a wireless headset so I think the wired connection hasn't been given the same level of focus as the more important wireless Bluetooth connection. Can I ask what your use case is for keeping the headset cabled in directly?
08-31-2021 08:32 AM
09-01-2021 06:52 AM
Clear and helpful advise - thanks.
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