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SV8100 when caller disconnect on analog trunk, system should free the line

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jeroentjed

Technical User
Jan 30, 2020
71
NL
I hope I can explain this right:

I'm having a issue on my analog trunks. when a caller disconnects when in a menu (VRS or inmail) or in a mailbox (especially with remote logon) the line keeps occupied for a long time. I would like to set it that it frees the line in a few seconds after the caller hangs up.
I thought it was set at 14-02-18/19/20 but that seems not to change anything. Maybe I don't use the right settings or maybe I'm looking at the wrong place.

Phoning Dutchman - NEC SV8100 - Your help is greatly appreciated
 
You need to verify with your carrier that they are providing a disconnect signal. Also try 14-02-04 to disconnect.
 
Carrier is providing it, I think. This is the sound you hear when the person you are talking to hangs up, right? the tuu-tuu-tuu-tuu ? 14-02-04 did not work.

Phoning Dutchman - NEC SV8100 - Your help is greatly appreciated
 
Verify it. You are chasing your tail if it's not setup on their end.
 
When i call my cellphone and I hang up, my cellphone knows I did. Or is this not the same?

Phoning Dutchman - NEC SV8100 - Your help is greatly appreciated
 
You have it backwards on your test. When you call your system from your cell when you hang up your cell the phone company tells the phone system to hang up the analog trunk.
 
Yes, so when the external hangs up the system needs to recognize that and if the phone system hangs up its up to the external party to recognize that, right?


Phoning Dutchman - NEC SV8100 - Your help is greatly appreciated
 
No, the telco recognizes it and sends the disconnect to the phone system.
 
ok. I think the problem is in the phone system. when a caller gets voicemail and hangs up, it takes a long time before the trunk comes free. I also get a voicemail with the disconnect signal. after DIL conversation there's no problem.

Phoning Dutchman - NEC SV8100 - Your help is greatly appreciated
 
Connect a single line phone or a test set directly to the CO line. Call the number you connected the phone or set to from another phone line. A cell phone is fine. Answer from the phone or test set. Hang up the cell phone and listen to what happens in your test phone. If you hear 2 distinct clicks, you are getting a good disconnect from the telco. If it goes to a busy, a dial tone, or just silence, this is NOT a good disconnect signal and the correct fix would be to ask the provider to provide loop disconnect upon hangup.

When you hear the 2 distinct clicks, you are hearing the telco removing then reapplying current to the line. This signals the equipment to disconnect.
 
Hi meyer1y2k, thanks for answering. I tried it, no clicks here. To be honest, I'm not sure if i should hear them, I never did on any phone line in The Netherlands. is it possible that the system works different here? We don't have "copper" lines any more, they are all VoIP in some way but sold as analogue lines by the internet providers.
I have 4 lines, two are part of my internet/cable/telephone subscription and two are on a separate VoIP ATA I installed myself.


Phoning Dutchman - NEC SV8100 - Your help is greatly appreciated
 
The device used to convert VoIP to analog should have a disconnect option. Call your telco provider. This is not a system issue.
 
Hi Belvedere, I have a linksys pap2 ata for two of my lines, I should be able to change that setting myself. I'm gonna have a look at it. any idea what it's called?
For the other two lines, I'm not going to bother my telco provider. I'm thinking about cancelling my subscription there and buy a second ata. It's even cheaper!

Phoning Dutchman - NEC SV8100 - Your help is greatly appreciated
 
Disconnect recognition timer, trunk release timer, battery reversal, just some definitions.
 
Alright, I found the right settings for the VoIP ATA that are needed in The Netherlands. Problem solved, thanks everyone!

Phoning Dutchman - NEC SV8100 - Your help is greatly appreciated
 
Congratulations! You now likely know more about this than the service provider.
 
Hahaha lol! Yeah I think so to! It's stupid the service provider sells a service that is not working by the right standards. My own VoIP's work better now then the line of the telco! ;-)
And it really works well now, as soon someone hangs up, no matter on what side of the line, the connection disconnects immediately and in the right way.

Phoning Dutchman - NEC SV8100 - Your help is greatly appreciated
 
Hi roldix27, the issue is already solved.

Phoning Dutchman - NEC SV8100 - Your help is greatly appreciated
 
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