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Customer Discussions > D-link forum

D-Link DPH-50U Bad Drivers


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Showing 1-3 of 3 posts in this discussion
Initial post: Oct 28, 2008 4:29:34 PM PDT
Ever since installing the D-Link DPH-50U VOIP device on my PC, my PC has run considerably slower. I did some investigating and this is what I found:

The D-Link VOIP drivers are using excessive Deferred Procedure Calls (DPCs). This amounts to 25% - 30% CPU usage constantly!

To prove this I disabled the D-Link VOIP driver. Immediately my DPCs went down to zero! Re-enabling the driver made the DPCs go back up again.

I have sent D-Link 2 emails about the problem with no reply.

In reply to an earlier post on Nov 14, 2008 2:52:09 PM PST
R. Ratzlaff says:
I have the same issue. Windows XP Pro SP3. Any resolution?

In reply to an earlier post on Nov 25, 2008 9:37:18 PM PST
Sorry to say D-Link has answered as follows:

Date of Reply: 11/20/2008
Products: DPH-50U
Operating System: Windows XP Pro

There are no plans currently to release new drivers for this product. I will like to point out that the problem you are experiencing depends on the chipset on the motherboard. A good number of chipsets work well with the device and some have shown that problem. Please try installing the unit on another PC.

Should you require further assistance with your D-Link products, please reply to this message, or call toll free at 877-453-5465.

Thank you for networking with D-Link.

Sincerely,
Samwel Basweti
D-Link Technical Support

I find this answer totally unacceptable. My motherboard uses the Intel chipset. The best. The technician's suggestion that I install it onto another PC is stupid. I'm not going to discard my PC just for their poorly designed drivers.

It just so happens that this unit is not manufactured by D-Link. It was manufactured by a now defunct company in Israel. They private labeled it for D-Link and US Robotics. Since the company is out of business I don't see any updated drivers forthcoming. Interestingly enough, the Windows Vista drivers were written by another company who, apparently, bought out the Israely company's technology. But the new owner does not make this unit any more.

The price of this unit has gone from $70 to now as low at $14.00. I suspect D-Link and it's resellers are trying to get rid of it's inventory.
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Discussion in:  D-link forum
Participants:  2
Total posts:  3
Initial post:  Oct 28, 2008
Latest post:  Nov 25, 2008

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