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Joined: Nov 2007
Posts: 369
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Joined: Nov 2007
Posts: 369 |
My customer has been using his DS2000 for a number of years with service from the local telephone company...... never had an issue with Caller ID.
He recently switched providers, now using COX cable for service. Since the switch he can no longer receive Caller ID.
I verified with a Caller ID box at each line that the caller ID info is being sent.
I've adjusted the caller ID detect setting in 0402 to extreme ranges, but that doesn't help.
NEC tech support suggested a software upgrade... which I did, upgrading from version 03.14.00 to version 03.22.00. Didn't work.
Tech support suggested trying trunk cards for the DSX system. I haven't tried that one, yet, since it will be an expensive proposition for the customer... he as two 8-port trunk cards.
Tech support also suggested trying the caller ID daughter board (by the way, don't make them any more) which snaps onto the "A" model trunk card (software version 02.00.00). My customer has the "B" cards.
So, where do I go from here? Have any of you experienced this with cable service providers? I have many other customers with the same DS2000, older software, and using COX, without the caller ID issue.
"I didn't do it, and I won't do it again"
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Joined: Apr 2005
Posts: 2,526 Likes: 4
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Joined: Apr 2005
Posts: 2,526 Likes: 4 |
When I had issues with caller ID as you are having now NEC sent out a caller ID daughter board, and than I would change caller ID type in program 1001 from DSP to daughter board.
Their reason behind it the daughter board is better at receiving weaker or distorted signals.
It worked
We get old too soon, smart too late
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Joined: Nov 2007
Posts: 369
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Joined: Nov 2007
Posts: 369 |
Dans,
Do you recall if the daughter board worked on the "B" trunk card? (Part number 80011B 8-port trunk card).
The last time tech support sent me the daughter board, they also sent the "A" card (part number 8011A).
"I didn't do it, and I won't do it again"
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Joined: Aug 2006
Posts: 201
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Joined: Aug 2006
Posts: 201 |
The Caller-ID daughter board also works on the 80011B.
DS/DSX Caller-ID FYI
The reason the daughter board works better on some lines is that it has a high impedance when receiving Caller-ID. However it's a higher cost solution, since a Caller-ID receiver chip is required for each line.
The DSP-based Caller-ID is a lower cost design, since the DSP is a shared resource. It requires the trunk card to make an audio connection to the line (without drawing loop current to prevent answering the call) by going off-hook between the first and second ring. In this case the DC impedance is high, but the AC impedance is 600 ohms. This connection method is detailed in the Caller-ID spec, but can pose a problem in some cases.
The DSX COIU cards connect with high impedance and use a DSP to receive the Caller-ID. This is the best of both worlds; consistent operation and low cost.
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