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2 posts

Wannabe Geek


Topic # 185516 25-Nov-2015 21:01
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My office is with 2talk via their cloud pbx.  We have 6 handsets (all Yealink T28P) which have their Line 1 registered to each persons own local number DDI.  Line 2 is registered to our main office number using the 2talk 'one number' functionality so they all ring at the same time and anyone can answer the call.  This has been working well for a year or so.
An odd thing has occurred with one of the handsets - incoming callers (regardless of whether it is via line 1 or 2) hear an annoying hum.  The hum can't be heard on the receiving handset.
We've tried these things to try and isolate the problem:

- plugged handset into a different Ethernet port in a different part of the building.
- grabbed a spare handset and configured it with the same lines.

It appears to be an issue at 2talks end I think?  I've raised a support ticket but they've been less than useful.

Any solutions from this forum would be much appreciated.

Cheers

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141 posts

Master Geek
+1 received by user: 48


  Reply # 1434826 25-Nov-2015 21:09
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Hi

We use heaps of Yealink in $dayJob and I've seen this plenty of times before.

My money is on it being a hardware fault with the microphone part of the handset piece that you hold in your hand.

Try swapping just the handset (but not the cable) with another phone, and see if the problem moves with the handset.

Hope it's that easy for you :)

Pete

Ps, you can get replacement handsets on their own too.

Pps, I've just re-read your post. By 'handset' I mean the piece you hold, not the phone part itself with the keypad on it (which I think you meant when you said handset?).


369 posts

Ultimate Geek
+1 received by user: 24


  Reply # 1434830 25-Nov-2015 21:16
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is the power source earthed, have experienced this with cordless headsets with no earth pin on the power supply plug.

 
 
 
 


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2885 posts

Uber Geek
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  Reply # 1434860 25-Nov-2015 21:58
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maz327: My office is with 2talk via their cloud pbx.  We have 6 handsets (all Yealink T28P) which have their Line 1 registered to each persons own local number DDI.  Line 2 is registered to our main office number using the 2talk 'one number' functionality so they all ring at the same time and anyone can answer the call.  This has been working well for a year or so.
An odd thing has occurred with one of the handsets - incoming callers (regardless of whether it is via line 1 or 2) hear an annoying hum.  The hum can't be heard on the receiving handset.
We've tried these things to try and isolate the problem:

- plugged handset into a different Ethernet port in a different part of the building.
- grabbed a spare handset and configured it with the same lines.

It appears to be an issue at 2talks end I think?  I've raised a support ticket but they've been less than useful.

Any solutions from this forum would be much appreciated.

Cheers


So you are saying that it doesn't matter what device you provision that line on, the hum follows it? i.e. it's not a device fault but something on that line?

Are you using the Yealink auto-provisioning provided by 2talk?




369 posts

Ultimate Geek
+1 received by user: 24


  Reply # 1434863 25-Nov-2015 22:04
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just to be clear you only have the hum with the one phone? or any phone that is configured with the pitcular extention, imho i highly doubt the later.

641 posts

Ultimate Geek
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  Reply # 1434865 25-Nov-2015 22:07
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Are you using a power pack or a POE switch?

If you are using a power pack, try swapping it out, the filter cap may be failing.

If using a POE switch, try another port on the switch.

John




I know enough to be dangerous


369 posts

Ultimate Geek
+1 received by user: 24


  Reply # 1434868 25-Nov-2015 22:09
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wait its not comfort noise or silence suspression by any chance? that is enable on the extention.

369 posts

Ultimate Geek
+1 received by user: 24


  Reply # 1435256 26-Nov-2015 14:41
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how did this pan out?



2 posts

Wannabe Geek


  Reply # 1437555 30-Nov-2015 08:50
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Thanks for all of your advice.  Sorry for the delay in replying - phones are powered by their own power pack; the hum was happening also on another phone that was configured to the same extension; swapped hardware but still had the issue.
Update - this morning the problem seems to have disappeared!??!!??  2talk had not yet closed the ticket so I'm thinking that they've been tinkering with something at their end?  It's got me baffled. 

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