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C420 headset not working on cisco softphone - Plantronics Blackwire C420 Headset

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My Plantronics C420-M is not recognized


How To Fix Error Code 43 Windows has stopped this device because it has...

If Windows Device Manager is giving a code 43, this means the hardware is reporting something wrong when trying to connect. I'd do the following (and also check the attatched link for reference ;-) )

  • Unplugging the headset, restarting the computer, then plugging the headset back in.
  • Make sure the USB connector on your headset (and the USB port you're putting it in) is undamaged, and not dirty.
  • Try connecting the headset to another USB port, and another computer to see if you're able to reproduce the issue there (if not- it may just be the USB port(s) on your computer that you're plugging the headset into that's failing.
If all else fails, it may be time to purchase a new headset ;-)

Jan 22, 2014 | Plantronics Blackwire C420-M Headset

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Cisco IP softphone - one way audio - fix


Using the Cisco IP soft phone via VPN can sometimes cause audio to drop. To fix this:<br /><br />Right click the Cisco IP Phone and select Preferences...<br />Select the Audio tab<br />Click on the Network button<br />In Audio IP Address select Use this address<br />then set it back to Detect Automatically<br />Click OK and OK again.<br /><br />Give it 5-10 seconds and this will auto reset the audio on the IP phone and will correct the issues with one way audio.<br />

on Mar 08, 2011 | Cisco IP Communicator (SWIPCOMME1CH1)

1 Answer

Cisco expert


I think you're confused. IP Communicator is the unified communications client (IM and Phone) It is looking for a capatible headset so you can use your softphone. This software is not your VPN client. There are two different cisco product: one for your VPN and one for your phone. If you're trying to ocnnect to an old-style Cisco VPN, your IT dept will have to configure that with a certificate.
Solution from Cisco: http://www.cisco.com/en/US/products/sw/voicesw/ps5475/products_tech_note09186a00809b6c40.shtml
This behavior is observed when a user attempts to install or use the IP Communicator on a system that has different names for the Playback (wave out) and Recording (wave in) devices.
In order to overcome this problem, perform one of these tasks:
-Use a USB headset that is recognized by the IP Communicator.
-Upgrade to the latest version of the IP Communicator

Nov 07, 2013 | Arris SURFboard SBG900 Wireless Router...

1 Answer

\\the cables leading to the earpieces on my Plantronics Blackwire C420-M are hopelessly twisted. Is there a way to detach them to straighten them out?


Kim, sorry to hear about your dilemma. The cords cannot be removed. If they're twisted, you're only choice is to try and weave them back and forth around the headsets to see if they'll untangle a bit. It has been done with some success on other models. It'll take some patience but like an old sea captain once said: "Patience is a virtue, possess it if you can? Seldom found in woman but never found in man." So you have a better chance than I would :o).

Good luck from Headsets Direct!

Dec 21, 2011 | Plantronics Blackwire C420-M Headset

1 Answer

I can hear, but no one can hear me when I speak.


Make sure the Blackwire C420-M is the default device selected in your Sounds and Audio Device Properties under Sound recording.

Good luck from Headsets Direct!

Jun 10, 2011 | Plantronics Blackwire C420-M Headset

2 Answers

Cannot get my softphone to engage my headset.


You probably need to check your audio controls in your computer's control panel to make your headset the default audio device and also make sure your softphone control panel is set the same way.

Good luck from Headsets Direct!

Mar 25, 2011 | Plantronics DA45 Headset

2 Answers

Having issues with logging into the cisco softphone from home via vpn


Make sure that the subnet for the call manager is available over your VPN if you have locked the tunnel down. Also make sure that the IPC is allowed to bind to the VPN virtual network card.

Hope that helped!

May 19, 2010 | Cisco IP Communicator (SWIPCOMME1CH1)

2 Answers

Cisco IP Phone 7940 and 3com nbx as 3rd party SIP phones


Here are the instructions for configuring these units for 3cx

http://www.3cx.com/sip-phones/cisco-7940.html

http://www.3cx.com/sip-phones/polycom-soundpoint.html

Since the 3cx softphone worked well, I don't see why you couldn't configure each as for 3cx and make them work as well.

Dec 09, 2009 | 3Com NBX 2102PE IP Phone

1 Answer

E1 or T1 to pabx to router to softphone


Yes, configure second Cisco E1 port to simulate you telcom (network side) and connect it to PB, and first Cisco E1 to your telecom provider.

On Cisco router configure voice ports, and number manupilation, so you can catch any call and redirect it anywhere (Voip, Telco, PBX).

I tryed that with Ericcson, and it didn't work until connections where like these
telco <-> Cisco VoIP gateway (E1x2) <-> PBX

PBX's are not very flexible, Cisco is.

Jan 27, 2009 | Smart Modular 128MB SDRAM Module for Cisco...

1 Answer

I can hear the other person but they cannot hear me.


Thanks for your help. The person that helped was knowledgeable and understood the problem. We quickly addressed the problem and was solved within a few short minutes.

The settings on my laptop needed to be changed and that solved the problem.
It is working fine now.

I would like to be updated on products related to softphone and skype use.
since i spend most of my working hours on both it's important to have the best headsets that are comfortable and cancel out outside noise.

Thanks again, John

Aug 07, 2008 | Logitech Stereo 350 Headset

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