- Brand Name: D-Link
- Model Number: DI-102
Voip Internet Accelerator Intelligent Packet Priority Engine
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- The D-Link DI-102, Express EtherNetwork Broadband Internet/VoIP Accelerator and Intelligent Packet P
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Top Customer Reviews
The problem is that that whenever there's a hiccup in the connection (brownout, router or switch reset, unknown gremlins) the unit does not reset itself, as does the router, the switch and all my other network equipment. It must be manually disconnected, the broadband feed restablished in the router, then manually reconnected. This is not anything that the DLink suport staff seem to be aware of. Nor is it particularly intuitive (or logical for that matter).
If you can live with this and need focused broadband, place the unit in an easily accessible place and go for it.
We switched our home phone over to VOIP a few months ago, and although our ISP has infrastructure which is well optimized for VOIP, the call quality could be patchy when either of the Windows XP PCs in the house was using the shared DSL connection. However, when my wife's used her Apple Mac to FTP files, the VOIP connection was simply unusable. Unlike Windows XP, OS X 10.4 does not support Quality of Service (QoS), so it severely disrupts the VOIP packets.
Once I received the DI-102, I turned off all of my other equipment, plugged in the DI-102 between the DSL modem and telephone VOIP adapter, turned everything back on, that's it....
The device is very easy to install, and once installed it automatically goes to work. Basically it has two Ethernet connectors and a power connector. The built in browser based configuration is also very simple, providing status information for the device and four configuration options (for data rate, connection type, and static I/P information). Automatic data rate detection is already set by default.
We have noticed a substantial improvement in our VOIP call quality (and now even the Apple Mac can't disrupt our calls).
By the way, connecting this device (and any other networking/VOIP devices you own) to an uninterruptible power supply is essential for protection from "power nasties" such as surges, brownouts, etc.).
I bought this device to use with my asterisk server and it appears to do exactly what it should: give higher priority to VoIP (read: SIP and IAX2) traffic and allocate traffic as bandwidth needs change. I hooked up the device, changed my on-hold music to "Harvard Sentences", which are recognized by the ITU as a good method for determining telephone audio quality.
I immediately noticed a difference for the better, After baselining the quality level with full bandwidth, I tried downloading a few demos from Microsoft, and again, it seemed to work marvelously- no discernable packetloss.
This device won't help in all situations- I have two VoIP accounts, one has ping times around 180ms, and another with a ping time around 75ms. The 75ms VoIP had better call quality in virtually all regards, but the 180ms account still showed a few quality issues, that I've always had.
I noticed in multiple forums that people are having trouble using these types of devices on Comcast. This may be a cable issue, and because your sharing your connection, QoS probably needs to be setup on the head-end. My experience (with DSL) is 180-degrees of what the previous reviewer said.
I'm impressed. Compared to some of the more complex packet prioritization/QoS devices out there, this is the easiest to use out-of-the-box. It's truly PnP. It lacks in some aspects- virtually no end user configuration required, but when you stack it against other $1,000 QoS devices, It gets two thumbs up (way up.) It beats getting a dedicated DSL line for asterisk!
Long story short, if your getting a reasonable pingtime, this will enable you to still use a majority of your bandwidth for your browsing, without having voice quality issues.
It is important to understand what this device can and can't do. It can't do anything to improve a bad connection from your ISP nor can it do anything about inbound traffic. What it does is give priority to outbound VOIP traffic during periods of heavy uploading (e.g. P2P applications). I no longer have to shut down applications that upload a lot of traffic when I am on the phone nor do I have to mess around with QOS settings in aftermarket firmware on my router. This product fixed my problems 100%.
Most Recent Customer Reviews
To me this Voip Internet Accelerator Intelligent Packet Priority Engine does not live up to the proclaimed capabilities. Read morePublished on May 11, 2008 by Gregory Burrus
I was having problems with Vonage when I was downloading anything. I got one of these, plugged it in between my router and my cable modem and basically those problems all went... Read morePublished on April 10, 2007 by J. Dozier
Provides some quality of service on VOIP traffic. At full list it is pretty expensive for the modest improvement it provides. Read morePublished on March 5, 2007 by MajorMojo
Firstly, this does make VOIP calls more stable, but it causes so many 'strange' browsing problems that I just had to stop using it. Read morePublished on February 17, 2007 by Mr. Michael A. Prince
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