Customer Reviews
Internet Technology Guy Not Exactly Happy With VOIP Accelearator 
2008-05-11
To me this Voip Internet Accelerator Intelligent Packet Priority Engine does not live up to the proclaimed capabilities. I have the same problem as an internet technology guy who usses skype, vonage an routers etc, I have lots of uploads and downloads going on and this device no matter what I do I just don't see the great benefit. There is no solid indicator of what it is doing for me differently so I find it hard to recommend since I don't see a difference. There could be a benefit but I will never know what causes the slow down or not because no indicators of I am working as I am suppose to or better or worst because of the Voip Internet Accelerator Intelligent Packet Priority Engine
Helped a lot 
2007-04-10
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 away. Easy as that.
It's not magic. If you have a poor network connection, then that's what you have, but it helped me be able to use my Vonage VoIP without worrying what was being downloaded at that moment.
Does what is is supposed to do flawlessly. 2007-03-15
This device does exactly what it says it will do and with zero configuration. I just plugged it in between my router and cable modem and it went to work prioritizing my outbound traffic. It has been doing this quietly for several months without complaint.
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%.
DI-102 VOIP QOS Accelerator 
2007-03-06
Provides some quality of service on VOIP traffic. At full list it is pretty expensive for the modest improvement it provides. This product is slightly more effective the more PC's you have on your home network, providing the VOIP or like traffic (video streaming) with priority service. This improves the quality of the call mostly at the other person's end. Your voice is slightly less broken due to the way it delivers the VOIP packets. It can make an otherwise bad call OK.
Causes more problems than it's worth 2007-02-17
Firstly, this does make VOIP calls more stable, but it causes so many 'strange' browsing problems that I just had to stop using it. I really like the way that this device prioritises traffice, but as I said, too many problems and too little configuration. I am very technical and spent quite a bit of time trying to get this working well and unfortunately, I'm just better off without it.
I am on 7000/896 DSL internet.
Easy to install, fixed our VOIP problems.... 2006-08-15
D-Link , an industry leader in networking technology introduces the DI-102 Broadband Internet/VoIP Accelerator, a breakthrough device designed to enhance your VoIP calling experience.Typical Internet applications such as e-mail and chat require minimal bandwidth. But other applications such as Voice over IP (VoIP) and video streaming/conferencing require much higher bandwidth as they are real-time sensitive. The DI-102 Broadband Internet/VoIP Accelerator uses an intelligent engine to detect and prioritize bandwidth-sensitive packets so that they can be sent over the Internet as soon as the request is made. This results in faster processing of real-time based packets, less latency, and a better user experience.For instance, there are two computers on your network and both are online - one is using an e-mail program and the other is making a VoIP call. When data packets from each computer are sent to the Internet at the same time, the DI-102 will automatically classify the VoIP call as more important and send the VoIP packets first, and the e-mail data second. The user on the phone can immediately notice the benefits whereas the user sending e-mails will barely notice a change.Setting up the DI-102 only requires 3 easy steps. Power it up, connect your cable or DSL modem to the WAN port and then your router's WAN port to the LAN port. You don't have to worry about compatibility because this device works with virtually all Internet connection types and broadband routers on the market. In addition, the DI-102 dynamically configures itself by automatically detecting your Internet upload speed and is ready for use once it's plugged into your existing network infrastructure. It's a pure plug and play solution!Now, with this Internet/VoIP Accelerator, experience static-free VoIP calls, jitter-free video conferencing, and lag-free online gaming.
Great device, if you get good ping time. 2006-04-02
Ha ha ha. I'm a kid. LOL!
Listen,
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.
Abolutely useless 2006-03-17
I have typical residential cable bandwidth - 5Mbps down and 384kbps up. So, whenever I have massive uploads going on or my son is on bittorrent the VoIP quality degrades terrible (testmyvoip.com calls it "As bad as a crummy cell phone call" and they are right). Which is exactly what this device promises to fix. I assumed that it provides QoS, although I was a little irked that it never gave any technical information. It touts easy installation and promises "intelligent prioritization". It was easy to install all right - but it has intelligence of a straight pass-through wire. There was no difference in performance. Either I upload - or I talk.
The configuration screen looks very skimpy, so I decided to call support if there is any parameters that I can configure. I spent 50 minutes on hold (with most annoying advertising in long time), during which Tier 1 operator asked me for model and serial number of my router and cable modem, not to mention this device itself - before telling that I need to talk to "product specialist". By the way - unlike what the web page says - this device is *not* supported 24/7, since product specialists only work 8am-5pm Pacific.
Once I talked to product specialist - he essentially said "don't fool yourself, you won't get any QoS improvements; just return the device". What I am about to do tomorrow.
Shame on you, D-Link!
Great - when it works 2006-02-09
My work requires periodic sessions of massive downloads and when it's working, this device makes good use of my broadband connection. My connection averages about 13 MPS, and the download sessions generally run at 1.5 to 2 MPS. That might not seem like much, but without this unit, the download sessions run at less than half that speed. No one on the network has noticed any erosion in performance during download sessions, so I'd say it was a success in that regard.
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.
