Phones still ringing even when call has been answered

[kieran.miles]

Have a number of extensions within a call flow, customers in the call group are stating that once a call is answered it still rings about 3 times afterwards, also if they try and pickup this call it's dead on the backend.

They also mentioned that at around the same time the first issue occured another slightly strange issue has been occuring, if they pickup handset to make a call the first three rings are very quiet, then the sound goes back to normal. This one is more of a side issue but seems it maybe related.

 

[kieran.miles]

 

[Charles_3CX]

Update all phones to latest firmware which resolves the issue you mention.

 

[kieran.miles]

I just upgraded the firmware version on the top handset to see if this makes any difference.

 

[kieran.miles]

Updated the phone last phone they state the system only rings once now after a call is picked up from a group.

I noticed the system firmware is also out of date, should I go ahead and upgrade this too?