Showing posts with label voip. Show all posts
Showing posts with label voip. Show all posts

Network programming in .NET: C# & Visual Basic .NET Review

Network programming in .NET: C# and Visual Basic .NET
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Network programming in .NET: C# & Visual Basic .NET ReviewI purchased this book because I wanted to do socket programming. However only 30 pages is devoted to the topic. Threads are not covered as all and I found more information on the web then I found in this book.
The fact that you can not download the source code is another blow against the book.Network programming in .NET: C# & Visual Basic .NET OverviewThe purpose of this book is to provide tools to design and implement network-orientated applications in .NET. It is also a guide for software designers to choose the best and most efficient way to implement mission critical solutions. The book addresses real-world issues facing professional developers, such as using third-party components as opposed in-house development. It differentiates itself from existing .NET publications because it is aimed at experienced professionals and concentrates on practical, ready-to-use information. The book is written in two languages C# and VB.NET, and covers never-before published information on Telephony in .NET and packet-level networking. This is the second book in the Digital Press Software Development Series.Coverage of lower level protocols allows implementation of performance-centric applicationsDemonstrates the feasibility of developing telephony solutions in-house rather than outsourcingWritten in VB.NET and C# to assist readers working in either languageCoverage of Email, FTP and the WWW allows implementation of applications in all three areas

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ASUS Skype Videophone Touch SV1TW (Silver Grey) Review

ASUS Skype Videophone Touch SV1TW (Silver Grey)
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ASUS Skype Videophone Touch SV1TW (Silver Grey) ReviewThis is definitely a huge leap forward from the voice only based standalone skype phones (Linksys and Philips), however, I would definitely give this device 5 stars if:
1. It would have a video out on the back, it already has mic in and headphones input but if you have a bigger monitor you want to connect the output to during conversation to get a bigger picture, there is no way to do this
2. Add bluetooth! So that it's easy to pair a bluetooth headset to this unit
3. What's up with the battery that lasts 20 minutes? I mean common ASAS, you guys built me the 1005HE that holds for like 9.5 hours what is this 20 minute battery?
4. Put at least 1.3 megapixel camera
Other than above 4 items the phone is great, it's robust and well made, the top tilts to accommodate people of different height or seating position. Sound quality is definitely better than in my asus EEE PC. Easy to connect to wireless network. Like I said, great start but can be better.
ASUS Skype Videophone Touch SV1TW (Silver Grey) OverviewAsus 90EP0D1ABC0-U1A0KZ 7 inch AMD NX-1750 1.4 GHz VideoPhone (Silver Grey)

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USB Cordless/VoIP Phone Support MSN Yahoo Messenger Review

USB Cordless/VoIP Phone Support MSN Yahoo Messenger
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USB Cordless/VoIP Phone Support MSN Yahoo Messenger ReviewBeen using Skype on my Windows 7 (64 bit) laptop quite happily for a few months now. My only concern after those months was being physically 'tied to the computer' to be able to 'use my phone' (Skype is my only telephone service of any kind) So the search for a cordless phone began. This 3J-W1D cordless Skype USB phone fills my needs 100%. The included software installed effortlessly and afterwards a system reboot got Skype and SkypeMate (the phone's software client)in sync and I was immediately able to call people from wherever in my home I desired. I need to clarify an erroneous review here. This phone DOES come with a battery that is shipped inside the same packing sleeve the phone comes in but not obviously so. Hence I suspect the other reviewer probably threw his battery out with the rest of the packaging. Anyway if you look closely it is impossible NOT to see the battery tucked in it's own little cardboard 'doghouse' formed within the phone's own cardboard packing sleeve. The batery is white and only about the size of 2 USA first class postage stamps placed side-by-side. It thickness is about a 1/4" at the moct. The attached wiring (which one needs to plug into the phone) is so very tiny. My fat 59 yr old fingers were able to do it. I suggest you enlist the help of a child to avoid stress and swear words! Anyway the phone works fine it duplicates the contacts list from your pc-based Skype program. I have yet to test the advertised 160 ft range but since it is adequate for me at home (about 50 ft max)I am pleased. Maybe some sunny morning (or starry night) I'll stroll out onto the veranda and call someone. BTW here is a link to the owner's manual (pdf) should you like to see that pre-sale. [...]The phone is entirely powered from any available USB port. My battery was partially charged when I installed it and I was able to make some calls to test it for any issues. Once I placed it on the base (which includes a nice sounding speaker phone)it indicated it was charging for abour 3 hours (flashing led) then finally fully charged (steady led). The handset display is black and white with a very nice 'blue glow' background lighting. I find it easily readable and quite attractive too. One pleasant surprise is the feel of the phone in your hand. It is about 3/4 scale size of a 'normal' landline cordless phone but the tactile response (what it feels like to the touch) is a smooth yet gently 'grippy' somewhat soft rubber-like texture. It feels great and is not likely to slip out of your hands easily.
My only complaint is i have yet to see how to change the 24 hr format time to 12 hr am/pm format. It seems to mimick the installed Skype pc software which I don't think has an option or a Skype 'Extra' for this selection. I sent an email to the manufacturer in Gilbert,AZ about this but so far no replie. (How many times have we read similar words ..eh?) Here is the homepage for this phone's manufacturer [...] Lastly while on it's base the time is easily readable in about 3/4" high bold black letters and beneath that in smaller text it says "Let's Skype" so it makes for a handy clock too depending where you place it and that is what led me to wanting to set it from 24 hr format to 12 hr am/pm. Right now it is 1:04 pm but my Skype phone says it is 13:04 and makes me feel I'm back in the Army again.
I would HIGHLY recommend anyone looking for a realtively inexpensive Skype-based cordless USB-powered phone to try this one out. Bought mine from Amazon through the $2.99 overnight shipping Amazon Prime account (30 day free trial is well worth it..hehe!)
BUY THIS PHONE!!!
USB Cordless/VoIP Phone Support MSN Yahoo Messenger Overview

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IPEVO S0-20 WiFi Phone for Skype Review

IPEVO S0-20 WiFi Phone for Skype
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IPEVO S0-20 WiFi Phone for Skype ReviewI have been using the Ipevo So-20 Skypephone for over a week now (mine came directly from Taiwan) and I am amazed at how well it works.
Previously I had tried and returned both the Belkin and Netgear Wi-Fi phones because they were full of bugs, the battery life was ridiculous and call quality inferior to Skype calls from a PC. I eventually settled for the now discontinued Linksys CIT-400 and I am quite satisfied with it except that battery life is also poor and it requires an interface (access point)to be connected to your modem/router.
The Ipevo SO-20 is a totally autonomous Wi-Fi Skypephone, all you need is a wireless network (B or G). Compared to its predecessors the Ipevo has the following advantages:
-Li-ion battery: the SO-20 can last up to 3 days off the charger on stand-by, but count on a couple of days between charges in normal use.
-Wi-Fi connection manager: the Ipevo allows you to manage your wireless access by storing favorite networks and their access keys. You can also decide whether it can connect to non-saved networks or only to preferred ones. It supports WEP, WPA and WPA2 encryption (I just think you cannot use it when you have to log-in on a network through a web page, but check the Skype site, I think they have a flat-rate package to access all Boingo hot-spots worldwide).
Wireless range is pretty decent, I never went below 3 bars (out of 5) inside my home.
-Very modern and clean design and the feel is not that of cheap plastic. The screen is very legible, the keypad is backlit, you can adjust the volume with 2 dedicated keys on the side, like on a regular cell phone and there is a headset jack. You can charge the Ipevo either directly from the charger via a mini-USB connection (handy if you need to use it while charging), or by dropping it on the supplied cradle.
Overall the Ipevo SO-20 is an amazing Wi-Fi Skypephone and I highly recommend it.IPEVO S0-20 WiFi Phone for Skype Overview

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USB 2.4ghz 50 Meters Wirefree Usb Cordless Skype Phone Review

USB 2.4ghz 50 Meters Wirefree Usb Cordless Skype Phone
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USB 2.4ghz 50 Meters Wirefree Usb Cordless Skype Phone ReviewThis is an *AWESOME* phone! I've had this unit since August 2007, and has been working eversince with no issues! The battery life is exceptional with talk time averaging about 5-6 hours depending on how often i've used it. The past reviewers of this product apparently, did not know how to program it properly. And i do agree, however, that the instructions are poorly written. But i did do a little more research on Skype and you'll need to install the current Skypemate firmware to make the unit fully operational as advertised. The following links are the download page where you can download the Skypemate firmware for *FREE*-
for XP / Vista users head to the following link: [...]
Hope this helps!USB 2.4ghz 50 Meters Wirefree Usb Cordless Skype Phone Overview

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Grandstream GXV3140 IP Multimedia Phone Review

Grandstream GXV3140 IP Multimedia Phone
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Grandstream GXV3140 IP Multimedia Phone ReviewBelieve me I have been waiting for this long time.
5 Years back I was already considering a solution like the GXV3140.
At that time the devices came with some kind of VOIP account bundle. So I was skeptical.
Especially Grandstream as a budget maker has a long history for hit or miss products.
If Grandstream can pull this product of the right way, make it work and actually deliver on the promises the brochure gives then this will be a 6 star product.
Grandstream has been promising before features that didn't make it into later firmware versions. So when I heard the GXV3140 comes out with all this killer applications built in I was even more skeptical.
The GXV3140 is clearly a device that focuses towards "one size fits all" - in other words - quantity.
The GXV3140 must be Grandstream's answer to the Germans "Eierlegende Wollmilchsau."*
- Skype
- Twitter
- Facebook
- Google voice
- Browser
- IM (Gmail, MSN, QQ, Yahoo)
- Weather
- Calender
(Display of holiday names in local language)
- Currency converter
- Calculator
- Stock ticker
- RSS feeds
- Mp3 player
- Internat radio (streaming)
- phonebook
- 3 sip accounts
- TV out connection (audio/video)
- USB port
- SD slotWith this vast amount of functionality the device can literally fulfill "little" technical wonders.
As a sidenode: The "bigger" wonders are fulfilled by you during the configuration period ;-)
The key to this success is that - after configuration - the user can enjoy all those applications without PC knowledge.
With all this privileges comes of course a new level of responsibilities. So keep in mind that running so many applications on a network device naturally increases the risk of becoming unstable.
The good thing (from security point of view) is most applications need to be started first before they can be used.
So first advice I would give is to update to the latest firmware.
(Users have been complaining about stability on earlier version.)
--- Update June 2010: ---
Since the official GA release of Firmware 1.0.1.18 (GA) on 24th August 2009 the phone has come a loooong way.
It became considerably more stable and usable.
--- Update November 2010 ---
Latest firmware version is 1.0.7.3
--- Update March 20111 ---
Firmware was overhauled and Interface feels now fast and snappy.
Especially web browser seems to have been improved again.
--- Update April 20111 ---
Linux Skype Ver. 2.2.xxx is now fully working with the GXV3140
This means that Grandstreams GXV3140 / Skype client now fully works with Windows / Mac / Linux Skype clients !!
Lets hope that next Skypes mobile client versions will include H.264 video.Its pretty cool to have that much functionality after the initial 4 days of configuration.
So I don't need to startup my PC for smaller tasks anymore and my desk looks cleaner too.
My only complaint (for now) is that 3 sip accounts is no way enough for me.
(I would require roughly 6+). If you use 3 incoming DIDs (Tokyo, London, New York) with different providers and 3 others for outgoing calls than you already have an issue.
It can be an invaluable advantage to change the provider at a push of a button when the carriers voice quality varies. (as it does with many budget providers).
Having said that The GXV3140 has a remarkable voice quality even when the network is sluggish.
I am (still) a long term (5+ years) SNOM 360 user (and fan) and was buffled that the GXV3140 delivers even better voice quality.
The voice is literally crystal clear. Your partner will hear you taking a breath in and out. (and that's no joke !!)
I have to confirm yet if Netmeeting will work with it.
Ekiga does (think of it as a sip based Netmeeting) and there are other compatible softphones out there too like f.e portsip, eyeBeam etc.
Its pretty cool that you can receive PC calls.
This means that your partner does Not have to buy the GXV3140 if (s)he doesn't want to.
The video experience itself is pretty cool too, you can start to consider it a replacement for a video conference system.
For ADSL / SOHO users:
With Video Bit Rate : 256kbps it feels still like a web cam experience.
But, the video size is sufficient to confirm that its your mum on the other side.
That alone can make it worth if you live far away from people you care about.
I have read stories about it being used in health care as well.
For professional users:
With Video Bit Rate : 512kbps - 1024kbps it delivers quality like a video conference system.
The video can be output on your TV screen.
The quality is so good that it will bring tears (not only) to your granny.
That stuff just wasen't possible not so long time ago.The key to being able to enjoying it is the networks latency and that is where you (usually) don't have influence in long distance calls.
Nevertheless we have been running tests between Tokyo (Japan) and Frankfurt (Germany). The slower end of the line ran on a DSL 384 kbps SOHO connection.
We found that it gave us sufficient performance to make us want to deploy it further.Summary:
Spending $250 on a VoIP phone is not cheap, but with this amount of functionality its well worth considering. You get the most used functions accessible from your desk for the fraction of a power consumption a PC has.
In addition it also offers non technical users accessible functionality in a new package.
If you think about being able to see the people that are close to you, whether or not they are within the same building or on the other side of the street, the country or the ocean, then this alone is a big time motivation.
While the video experience alone might be the most attraction for some, for me its really the combination with the other applications that pull each separate function together and make it a whole package.
Also note while most phones are not used when you dont call, this phone has a screensaver, digital photo frame function, mp3 player, internet radio streaming function, weather function, currency converter etc. all build in.
Have I even mentioned yet that the interface currently already supports 11 languages ?
English, French, German, Italian, Portuguese, Spanish, Chinese (twice), Korean, Japanese etc. - (the last language I am guessing is either Russian or perhaps Greek).
Overall, in its current state I think its well worth 4 stars.Three things that immediately got my attention:
First, upgrade your phone to the latest firmware.
Second, I personally would like to see the GXV3140 offer at least 6 sip accounts.
This way I could take all current accounts from the "old" phone over to the new phone.
Thirdly, I would loved to see the device design more elegant and in different colours than black. (f.e coffee cream or pearl white) perhaps at some time skins will be available in several colors.
* A fairytale pig, which in addition gives milk and lays eggs and with a skin made of wool. You get the idea ? ;-) This product shows Grandstreams commitment to develop it towards a six star killer application.--- Stay tuned ---
Grandstream GXV3140 IP Multimedia Phone Overview

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