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R4

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Reply with quote  #1 
Just thought I would put this out there as I only recently heard about it.

When Telstra or for that matter anyone else supply the PSTN services by using an SPA8000 or SPA122 there can be problems with the lines locking up. This is because the SPAs use congestion tone as the cleardown signal whereas the NEC systems use Busy tone to detect cleardown. This can be changed but Telstra do not automatically do this so you need to get the tech to do this on installation. They also have a 10 second delay before sending the tone out so you may need to get that changed too!
eltaco

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Reply with quote  #2 
Hi R4

That's very interesting. Recently we had a lot of water into our NEC SL1100 and most of it's settings got reset.

I've managed to put things back in order but I've noticed that when an incoming call hangs up the SL1100 seems to take a while to release the line. Funny enough we have it sitting behind an SPA8000 which Telstra replaced after the rain fried it.

Is this setting configured on the SPA8000 or on the SL1100 and could you point me in the right direction if possible?

Cheers
R4

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Reply with quote  #3 
There are a couple of settings that need changing and I have a document that lists them but it is at work, I will send you a copy on monday. If you use voicemail as your night destination, you will also find that it doesn't clear down properly. There is also a setting for analogue trunks to detect cleardown tone, you should check that also.
eltaco

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Reply with quote  #4 
Thanks that would be great. As it happens we do use voicemail as our night destination and that's exactly how I noticed that it was holding the trunks for longer than necessary when the remote line hangs up.

I'll see what I can find re cleardown tone detection. Thanks again.
R4

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Reply with quote  #5 
Check your Gmail.
eltaco

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Reply with quote  #6 
Thanks for the info R4, it all seems to be sorted now.

For anyone who stumbles across this in future I enabled the setting at 14-02-12 and that seems to have fixed the slow release of analog trunks when the remote party ends the call.
techsup23

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Reply with quote  #7 
I'm trying to help a club that is having similar problems with a Telstra NBN SIP (TBS), SPA8000 and NEC SV8100. When phone is set to "night mode" and calls are redirected to voicemail after the caller leaves a message and hangs up the line stays active for over 5 minutes before disconnecting.

I've tried setting 14-02-12 using webpro as recommended by eltaco but this didn't help. Also after rebooting the NEC the 14-02-12 seems to revert back to default.

This is my first exposure to the NEC SV8100 so very possible i've missed something.

Can anyone please help with any other setting or information that may help?

Thanks.
R4

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Posts: 199
Reply with quote  #8 
This is a known problem and there are settings that need to be changed in the SPA8000. As default, the SPA8000 gives the wrong cleardown tones and so the NEC doesn't realise the call has ended. I have some documentation, I will forward it to you, but you have to get Telstra to change the settings.
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