Author Topic: 6202 dropping calls  (Read 68 times)

jim@acgs1.com

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6202 dropping calls
« on: December 06, 2017, 09:25:15 AM »
I have a ucm6202 all of the sudden it hangs up at 32 seconds anyone have any ideas it has been working for the past year

lpneblett

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Re: 6202 dropping calls
« Reply #1 on: December 07, 2017, 04:20:31 AM »
This is usually a firewall issue. Forget about nothing having been changed as something has whether you did it, the devices did an update or the provider is handling calls somewhat differently.

You did not mention how the 6202 is configured with regard to its position, Is it in route mode and facing the Internet or switch mode behind a router?

I will assume switch mode behind a router and the first thing to do is to verify that you have the ports forwarded in the router for 5060 UDP and for the RTP ports 10000-20000 UDP ( port range can and should be less, am showing defaults) to point to the UCM private IP. Whatever RTP ports are chosen, they need to be the same in the router and the UCM,

SmartVox

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Re: 6202 dropping calls
« Reply #2 on: December 07, 2017, 05:26:21 AM »
Agreed with general assessment that a firewall is closing a timer somewhere that it didn't used to close.  SIP ALG may have been turned on as well, which tends to make things worse for commercial VoIP traffic.  I'd check that if your router has it.
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jim@acgs1.com

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Re: 6202 dropping calls
« Reply #3 on: December 07, 2017, 08:36:16 AM »
I have it set at a switch. i have 2 pots lines and 1 voip it did it on both lines i have flashed the previous firmware to test and no change it hanges up at exactly 32 seconds 

drostoker

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Re: 6202 dropping calls
« Reply #4 on: December 07, 2017, 08:38:49 AM »
Can you please clarify is the drop is happening on the analogue lines, the VoIP line or all three.

Thanks.
David
Grandstream Certified Specialist (UCM & Network Solutions)
Grandstream Certified Reseller
GTA & Ottawa, Ontario, Canada

SmartVox

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Re: 6202 dropping calls
« Reply #5 on: December 07, 2017, 09:24:50 AM »
I'd also like to know if it's only on trunk-based calls, or if the calls drop if you're calling extension-to-extension (ie, internal only)
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jim@acgs1.com

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Re: 6202 dropping calls
« Reply #6 on: December 07, 2017, 10:16:20 AM »
yes it dropped internally. any ideas

SmartVox

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Re: 6202 dropping calls
« Reply #7 on: December 07, 2017, 10:20:04 AM »
Then this is not an external firewall, router, switch, or network issue.  Have you accidentally set a call duration limit on the extension(s)?  See Extension -> XXX -> Features
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jim@acgs1.com

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Re: 6202 dropping calls
« Reply #8 on: December 07, 2017, 10:32:06 AM »
i do not see a limit it does it on all 3 extensions

SmartVox

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Re: 6202 dropping calls
« Reply #9 on: December 07, 2017, 10:34:27 AM »
My last suggestion is a factory reset because something is turribly turribly wrong.
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jim@acgs1.com

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Re: 6202 dropping calls
« Reply #10 on: December 07, 2017, 11:51:19 AM »
this is not what i wanted to hear, I tried to call in but have not got a hold of anyone. i checked that setting even applied it and changed the time to 60 and it still kicked off at 32

SmartVox

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Re: 6202 dropping calls
« Reply #11 on: December 07, 2017, 12:01:33 PM »
Sorry.  32 is a very precise, but weird number.  I'm not aware of any other timers that are exposed to the GUI, so I'm not sure of anything else you can check.
 :-\
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lpneblett

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Re: 6202 dropping calls
« Reply #12 on: December 07, 2017, 03:05:09 PM »
Not sure that we have all the info quite yet.

You indicated the the calls drop even when calling from one internal extension to another internal extension (internal meaning that both extensions are connected to the same LAN as the UCM). So, what happens when you dial voice mail from one of the same internal extensions? Do these calls drop as well?

What firmware is the UCM running?
What phone make and model are you using to make the calls and what firmware are they running?

SmartVox

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Re: 6202 dropping calls
« Reply #13 on: December 08, 2017, 05:09:22 AM »
For me, the big clue is the OP's op, where it is stated that "it has been working for the past year."  So obviously something has changed either on phones, network, or UCM.  I'd ask myself how much time I'm spending on diagnosis when I could reset everything and start over.  Compare those two time expenditures and go with the one that takes less time.
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