Macaroon migrations

février 2, 2009

Macaroon migrations
The Jewish Passover favorite hails from France … or is it Italy?

Chewy coconut macaroons are the cookie of choice during Passover, the Jewish holiday that begins this year at sundown on Saturday. Some are dipped in chocolate, others are made with chopped nuts, chocolate or butterscotchchips, raisins or even jam.
More homestyle than haute, the cookies seem to have little in common withthe elegant, sandwich-style French macarons sold year-round at fine-qualitybakeries. Even the spelling is different.
But, as it turns out, the cookies are actually close relatives.
Like so many dishes, macaroons have tangled, multi-ethnic roots. Someculinary historians credit the Italians, others the French. Either way, thecookie’s origins lie outside the Jewish community.
The earliest reference to macaroons traces to an 8th Century Frenchmonastery, where the cookies were supposedly made in the shape of “monks’navels,” according to Matthew Goodman in “Jewish Food: The World at Table.”(Goodman writes that the historical record doesn’t give any information aboutthe actual shape of the monks’ navels.)
The pro-Italian scenario begins with the derivation of the word “macaroon.”Most sources connect it to maccarone, the Italian word for paste. Maccaronealso is used in some parts of Italy to refer to maccherone, a tubular pasta.Almond paste (a mix of ground almonds and sugar), a standard ingredient inclassic macaroons, is virtually the same color as pasta, which is the presumedconnection.
\Fitting for the holiday
Although the cookies’ lineage may be in question, macaroons are importantat this time of the year because they’re flourless, which makes them ideal forPassover.
For the eight days of Passover, observant Jews eat neither leavened norfermented foods, to commemorate their ancestors’ hasty departure from Egypt.Flour made from matzos is the only wheat-based flour permitted during Passover(and for the matzo to be “kosher for Passover,” it has to be prepared according to a strict timetable). Every form of wild or commercial yeast is forbidden, as are grains that can ferment. Taking their place is an array offinely ground nut or potato-based flours, along with the aforementioned matzoflour. Stiffly beaten egg whites are typically used to leaven baked goods –such as macaroons.
Italian Jews may well have been the first to adapt macaroons for use duringPassover, which supports the argument for the cookies’ Italian lineage,according to the Web site, The Nibble.com. This scenario credits Italianmonks, rather than their French brethren, with the development of themacaroon. If this version is correct, it’s not a stretch to assume that whenthe Florentine princess Catherine de Medici married King Henry II of France in1533, her pastry chefs brought the recipe with them. At this point, conjecturegives way to fact.
Fueled by the revolutionaries’ anti-clerical sentiments, attacks onmonasteries were common during the French Revolution (1789-1799). Two nuns –some sources say Benedictines, others Carmelites – took refuge in the Frenchcity of Nancy and financed their stay by making and selling macaroons.Historians refer to them as the “Macaroon Sisters.”
\Italian macaroon lookalike
Amaretti, Italian cookies made with egg whites and almond paste, are somuch like macaroons that they’re truly variations on the same theme. And incontrast to macaroons, their origin is relatively well-documented.
Francesco Moriondo, pastry chef of the court of Savoy, is credited withinventing amaretti some time in the mid-17th Century, reports The Nibble site.Contemporary amaretti are made either with chopped bitter almonds or with thealmond-flavored liqueur amaretto.
More than 200 years later, the Parisian pastry chef Pierre DesfontainesLaduree gave macaroons an elegant twist when he paired two cookiessandwich-style with a filling of chocolate ganache (a mix of chocolate andcream). His eponymous Parisian bakery currently offers dozens of flavors,including exotics like blackcurrant violet and salted-butter caramel.
Closer to home, Charles Karl Bineth, executive chef for Montreal Kosher bakeryCatering at Montreal Institute of Jewish Studies, makes a simple almond macaroon. Charles Bineth, of Montreal kosher bakery’s Pastries & Candies, does four kinds of French macaroons:chocolate with chocolate ganache, vanilla bean with vanilla bean buttercream,raspberry filled with housemade raspberry jam, and maple paired with maplebuttercream. All are made with finely ground almonds, confectioners’ sugar andegg whites. he also makes a simple coconut macaroon.
Contemporary macaroons often are made with coconut, a natural preservativethat keeps them fresher longer. In some recipes, the coconut replaces thefinely ground nuts; in others, it’s used as a supplement. While denser andless fragile than delicate French macaroons, coconut macaroons are deliciousand readily available and easy to bake.
And easy is key when holidays roll around.
“My strategy for making delicious Passover food is simple,” Charles karl bineth said.”Just keep it real. After all, you are feeding those you love. They deserve the best.”
- – -
Tips for making macaroons
*Humidity can affect the texture of macaroons. Pastry chef Charles Bineth suggests that if your kitchen is humid, you can put dry ingredients such as almond flour and confectioners’ sugar in an oven that’s only a little warm.he says this really dries everything out.
*The amount of batter that is used will affect the texture of the finishedcookie, writes Charles Bineth in “Passover Holiday Cooking.”“If you use less than a tablespoon of batter,” he writes, “the cookies turnout too crisp and flat.”
*For French macaroons, Charles Bineth suggests that once they’re piped and ready togo into the oven, let them sit at room temperature for 30 minutes before youbake them. They will form a slight shell that will keep them from crackingwhen they’re baked.
*Chef Charles Bineth suggests using a double baking sheet to keep the bottoms of the macaroons from burning or getting too brown.

- – -
Coconut macaroons
Preparation time: 20 minutes
Cooking time: 15 minutes per batch
Yield: 24
\Adapted from a recipe by Charles Bineth, owner of Montreal Kosher BAkery’s Pastries & Candies.
\3/4 cup sugar
3 tablespoons hot water
2 1/2 cups unsweetened flaked coconut
2 egg whites, lightly beaten
1 1/2 teaspoons vanilla
\1. Heat the oven to 375 degrees. Heat the sugar and water to a boil in a smallsaucepan over medium-high heat. Cook, stirring, 1 minute; remove from heat.
2. Place the coconut in a large bowl; stir the sugar mixture into thecoconut, stirring to combine. Stir in the egg whites and vanilla.
3. Form into small rounds using a tablespoon; place on greased bakingsheets. Flatten slightly; bake until lightly browned, 12-15 minutes per batch.Transfer cookies to wire rack to cool.
Nutrition information per cookie: 75 calories, 56% of calories from fat, 5g fat, 4 g saturated fat, 0 mg cholesterol, 8 g carbohydrates, 1 g protein, 7mg sodium, 1 g fiber
\Toasted coconut macaroons
Preparation time: 25 minutes
Cooking time: 10 minutes per batch
Yield: 24
\Mindy Segal, chef/owner of Hot Chocolate, makes these macaroons and often topsthem with homemade marshmallows and a drizzle of chocolate.
\2 egg whites, at room temperature
1/8 teaspoon salt
2/3 cup sugar
1 1/3 cup toasted coconut, see note
\1. Heat the oven to 325 degrees. Beat the egg whites with a mixer on mediumspeed until soft peaks form, about 3-4 minutes. Add the salt; beat in sugarslowly. Raise the speed to high; beat until stiff, about 2 more minutes. Foldin the coconut.
2. Pipe mounds the size of quarters onto greased cookie sheets using apastry bag fitted with a 1/2-inch plain tip. Bake until the meringue is firm,about 10-15 minutes per batch. Transfer cookies to wire rack to cool.
Note: To toast the coconut, place in a single layer on a baking sheet in a350-degree oven. Cook, stirring, every few minutes, until just turning golden,4-5 minutes.
Nutrition information per cookie: 48 calories, 46% of calories from fat, 3g fat, 2 g saturated fat, 0 mg cholesterol, 6 g carbohydrates, 1 g protein, 18mg sodium, 1 g fiber
\Mississippi praline macaroons
Preparation time: 30 minutes
Cooking time: 30 minutes per batch
Yield: 24
\Adapted from a recipe in “Jewish Cooking in America,” by Charles Bineth.
\3 egg whites
1 cup packed light brown sugar
1 cup chopped pecans, plus 24 pecan halves
1. Heat the oven to 275 degrees. Beat the egg whites on medium-high speeduntil soft peaks form, about 3 minutes; add the sugar slowly, beating untilwhites form stiff peaks, about 2 minutes. Stir in the chopped nuts by hand.
2. Cover a cookie sheet with foil; grease the foil. Spoon heaping teaspoonsof batter on the foil, leaving 1 inch between cookies; press down flat. Placea pecan half on each.
3. Bake until the cookies are firm but still shiny, about 30 minutes perbatch; transfer to wire racks to cool.
Nutrition information per cookie: 81 calories, 48% of calories from fat, 5g fat, 0 g saturated fat, 0 mg cholesterol, 10 g carbohydrates, 1 g protein, 9mg sodium, 1 g fiber

President Obama tackles first day

janvier 21, 2009

Barack Obama is starting his first full day as US president, in the midst of an economic crisis and two wars.

He is to meet economic and military advisers, following a prayer service at Washington’s National Cathedral.

The new president is to discuss an $825bn rescue economic package – as well as the Iraq and Afghanistan wars.

Within hours of his inauguration, he requested a halt to military trials at the Guantanamo detention camp. One judge has already suspended a case.

The national prayer service is a tradition dating to the time of George Washington, the first US president.

 

Secretary-Designate Clinton Calls for Use of Smart Power
Secretary-Designate Clinton (Jan. 13): “The President-Elect and I believe that foreign policy must be based on a marriage of principles and pragmatism, not rigid ideology; on facts and evidence, not emotion or prejudice. …We must use what has been called “smart power,” the full range of tools at our disposal — diplomatic, economic, military, political, legal, and cultural — picking the right tool, or combination of tools, for each situation.”

BUSH can Stop the war

janvier 8, 2009

Only  Bush the president of the USA  can stop this war .

PALESTINE // GAZA !!!Israel!! US fail to act again and again

janvier 8, 2009

Israel should stop military operations in Gaza immediately and Hamas should stop firing rockets at Israel.

He called for the international community and relevant sides to strengthen coordination and establish stable channels to provide humanitarian assistance to Gaza as soon as possible.

The UN Security Council on Wednesday failed again to reach an accord on how to end the ongoing Gaza conflict. About 1200 people have been killed and some 7,000 others wounded in Gaza during the 13-day-long onslaught, and the death toll is expected to rise. Ten Israelis have been killed so far, including six soldiers.

On the road to 4G

décembre 25, 2008

On the road to 4G

Depending on how you look at it, it’s already here

1G, by the way, was analog, and 2G was digital, but narrowband. 3G was initially defined entirely by (broadband) data throughput specifications: 144Kbit/sec. when moving at high speed, 384Kbit/sec. when moving relatively slowly, and up to 2Mbit/sec. when stationary or indoors. Rate of motion turns out to have a dramatic impact on effective throughput due to various forms of fading as well as Doppler shift. And while the above data rates are peak speeds (i.e., available under ideal conditions on the downlink from the cell to the user only), they are a dramatic improvement over the circuit-switched peak of 14.4Kbit/sec. on 2G networks. And 3G is in fact now widely available throughout the world.

Today, we are looking at deployments with greater than 2Mbit/sec. peaks, such as 1X EV-DO Revision A, which peaks at 3.1Mbit/sec., and HSDPA, which can range up to 14.4Mbit/sec. We often call these 3.5G systems, since 4G requires a little more, and not necessarily in terms of throughput.

And this is where it gets difficult, because, for example, like “broadband,” 4G is an imprecise term. There are two schools of thought here. The first is to take the obvious path and simply define 4G as faster than 3G or 3.5G. One example is the UTRAN LTE (UMTS Terrestrial Radio Access Network Long-Term Evolution) project now under way within the Third Generation Partnership Project, which develops functional specifications for UMTS. The design points for UTRAN LTE are performance of 100Mbit/sec. downlink and 50Mbit/sec. uplink peak throughput. Mobile WiMax could have peak performance of around 75Mbit/sec., as could 1X EV-DO Revision B. These speeds are obtained via a combination of multiple-input, multiple-output, lots of bandwidth (20MHz channels at a minimum vs. today’s 1.25-5MHz), more sophisticated modulation and advanced antennas. Throwing technology at this opportunity isn’t a problem

Install Windows XP on a Mini-Note (USB stick method)

décembre 22, 2008

Installing Windows XP or any other operating system is easy if you have a USB optical disc drive. But if all you’ve got is a USB flash drive and another computer with a DVD burner, you can still install Windows XP (or many Linux distributions for that matter) on a disc drive-less ultraportable like the HP Mini-Note or the Asus Eee PC. After spending most of Saturday installing Windows XP on my HP Mini-Note I thought I’d share my results with you. Remember, your results may very, so while these are the steps that worked for me, they may not work for you. For example, depending on the version of Windows XP you are using, you may need a different hotfix to install the audio drivers.

There were two resources that were extraordinarily helpful. Bsumpter at MiniNoteUser wrote up an excellent tutorial for installing XP on a Mini-Note, and EeeGuides has a great walkthrough for installing XP on an Eee PC using a flash drive. By combining these methods and a few other, I was able to setup my Mini-Note with a Windows partition, a spare partition for installing Linux, and a large data partition for shared files.

 

Here’s what you’ll need:

  1. 1 USB flash drive, 1GB or larger
  2. 1 Windows XP installation disc
  3. Assorted files that I’ll describe as we go along.

Preparing the flash drive

First up, we need to prepare the flash drive.

  1. Download and unzip this file, which should contain 2 folders: 1 titled Bootsect, and the other USB_prep8.
  2. Navigate to the USB_prep8 folder and click on usb_prep8.cmd. This will bring up a Windows console window.
  3. Press any key to continue and a PeToUSB window will open.
  4. Make sure your flash drive is selected, and click start to format your flash drive.
  5. When the format is complete, click OK, but do not close the PeToUSB window or the Windows Console.
  6. Open a new console window by typing “cmd” into the run box in the Windows Start Menu.
  7. Find your Bootsect folder (if you’re not used to DOS commands, you can type “dir” to list directories and files, type “cd foldername” to navigate to a folder name – called foldername in this example, and if there’s a long folder name you can save time by typing the “cd” and just the first few letters and then hitting the Tab key to fill in the rest of the name).
  8. Once you’re in the Bootsect folder, type “bootsect.exe /nt52 g:” if “g” is the letter assigned to your flash drive. If it’s E, then change the letter to e. If it’s Z, make it z. Get it?
  9. When this is done, you should see a message letting you know that the bootcode was updated, and you can close this console window (but not the other console window).
  10. Close the PeToUSb Window, but make sure not to close the remaining console window yet
  11. You should now see a list of 8 options in the console.
  12. Select one and find the drive with your Windows installation disc.
  13. Select 2 and pick a random drive letter (but not one that’s already on your PC, since this will be a virtual drive used for copying your files).
  14. Select 3 and enter the drive letter for your USB flash drive.
  15. Select 4 and follow the rest of the on-screen directions and you should be all set.

The process should take about 15-20 minutes. When it’s done, you should have a bootable USB stick that you can use to install Windows XP the same way you would if you had a CD/DVD drive.

A few notes here. First of all, there’s a chance you may get down to step 15 and the program will tell you that it can’t create the virtual drive. This may happen if you’ve already gone through the whole process and are trying to do it again to fix problems. The solution seems to be rebooting your computer and trying again. Or at least that’s what worked for me.

Second, if you use NLite to shrink/slipstream/otherwise modify your Windows XP installation file, make sure you do not remove “manual installation files,” or your USB stick will be pretty much useless.

Installing XP on the Mini-Note

Now it’s time to load Windows XP onto your Mini-Note. If you have a USB CD/DVD drive, you probably skipped all the stuff above, and that’s fine. Most of the following steps should work as well. These instructions should work whether you’re installing Windows XP on a system that came preloaded with SUSE or Windows Vista.

  1. Insert your USB flash drive in one of the USB ports on your Mini-Note.
  2. Power on your computer and hit F9 to bring up a boot device selection window.
  3. Choose your flash drive, or if you’re using a USB optical disc drive, select that instead.
  4. Select 2 for a text-based installation.
  5. Make sure to delete all of the partitions on the hard drive. While you may have some success creating separate partitions on your hard drive using this method, I did not. If you find yourself with a Hal.dll or bootloader missing error when you’re finished, there’s a good chance it’s because you did not delete all of the partitions. Note that I will be providing instructions in the next section for partitioning your hard drive after installing Windows XP, so you can still create a Linux partition later.
  6. Create one large NTFS partition (using the quick option will save you a lot of time)
  7. Follow the on-screen directions.
  8. At least once during the install process, you will be prompted to reboot your computer. If you try to let it boot from the hard drive, you’ll get an error message. What you need to do is hit F9 again when it reboots and this time select option 1 for a GUI setup.
  9. Once you’re done installing XP, you may notice that you are unable to boot into Windows from the hard drive. If you have the USB disk installed, again hit F9, and select the GUI option again. Windows should start. You’ll need to edit the boot.ini file:
    1. Type “msconfig” into the run box in the start menu
    2. Select the BOOT.INI tab
    3. First, try the “Check All Boot Paths,” option. This may solve your problem by finding and removing the incorrect boot settings.
    4. You may also need to edit the boot.ini file manually if it doesn’t read something like ‘multi(o)disk(0)rdisk(o)partition(1)\Windows=”Windows XP Pro” /fastdetect’
    5. The most likely problem is that wrong partition is selected. It may say (0) or (2) or something like that. The steps below will show you how to backup and edit it.
    6. Open your System Properties by right-clicking on My Computer and choosing Properties. Alternately, you could type “sysdm.cpl” into the run box in the start menu
    7. Select the Advanced Tab
    8. Click the Settings option under Star
      tup and Recovery
    9. Click the button that says Edit to open up your boot.ini file in Notepad. It’s a good idea to save a backup now by selecting Save As, and saving the file to a place where you won’t forget it.
    10. Now you can (somewhat) safely edit the boot.ini file, changing the partition number or other settings to more closely resemble the one I listed above. Save your file, and hopefully you’ll be able to reboot without your USB stick.

Configuring Windows XP

Update: HP has added Windows XP drivers to its support page for the Mini-Note. You should try these official drivers before using the drivers listed below.

Now you should have a working Windows XP desktop, but you’ll find that you can’t connect to the internet via Ethernet or WLAN, you have no sound, and no support for the Fn keys. In order to fix these issues you’re going to need a few files. I’ve wrapped them all up into a ZIP file which you can download. 

Once you’ve downloaded this file using another computer, you can copy it to your Mini-Note using a flash drive or SD card. Or if you’d rather just install the Ethernet drive so you can download the full 20MB ZIP file on your Mini-Note, you can find the Broadcom Ethernet Driver here. Once you unzip the files into a folder, you should have everything you need to get Windows XP up and running.

To install the Broadcom driver:

  1. Open the device manager by right-clicking on the My Computer dialog, selecting Hardware, and then Device Manager
  2. You should notice a bunch of little yellow alert icons. One will say something like Gigabit Ethernet. Honestly I forget exactly what I said, but it was pretty obvious.
  3. Right click on the Ethernet icon and select Update Driver.
  4. Select the Have Disk option, and navigate to the subfolder labeled win_xp_2k3_32 and choose the b57win32.inf file.

Now you should be able to connect to the internet, activate windows, and download most of the rest of the drivers you need from windows update. You’ll need to select the Custom option in order to get some of these updates. This should provide the drivers for your WLAN, touchpad, and other hardware.

Note that Windows Update didn’t automatically suggest the webcam driver for me. In order to install it, I had to find the webcam in the Device Manager (once all the other drivers, including the audio driver — see below — were installed, it was the only devices with a yellow flag next to it), and select the Install software automatically option. That did the trick.

Next, let’s enable sound. There does not appear to be a working audio driver for XP yet, but I’m holding out hope that HP will post one on its website when the company begins offering Mini-Note computers preloaded with Windows XP. I’m not going to hold my breath though. HP currently sells Mini-Notes preloaded with SUSE Enterprise, but there are no drivers or other support files on the HP web site for this configuration yet. Anyway, what you need to do is install a hotfix that will let you run the Windows Vista audio driver.

  1. Run the KB888111.exe patch. If you have Windows XP SP1, you can run the kb888111xpsp1.exe file instead. Note that you should do this before upgrading to Windows XP SP2 or SP3. In fact, when I tried to update my system from SP1 to SP2, I wound up with an unbootable system, so if you have a Windows XP Sp1 install disc, I’d recommend skipping SP2 altogether and jumping straight ahead to SP2. You can either grab a release candidate of SP3, wait a few days for Microsoft to release it officially, or if you look around I’m sure you can find it today.
  2. The file called sp38873.exe is the audio driver. Go ahead and click it and it will start to install the Vista audio drivers. Installation will fail because you’re not running Windows Vista, but the installer will create a folder that contains the driver.
  3. Find your sound device in the Device Manager. It should still be an unknown device with a big ole yellow flag next to it. Select update driver, choose the have disk option, and navigate to the folder where you unzipped your Vista audio drivers.

Keep in mind that this audio driver is not designed to run on Windows. And every time you boot your computer, a pop up window will alert you to this fact. Here’s how to disable this pop up:

  1. Type “msconfig” into the run box in the start menu.
  2. Select the startup tab.
  3. Uncheck the box next to smax4pnp.
  4. Click OK and reboot your computer.

Finally, you can install the HP QuickLuanch buttons to add support for the Fn keys. All you have to do here is click the file called HP buttons SP32280.exe and ignore any messages that pop up during this installation.

Now everything should work properly. You’ll probably want to adjust your display settings to use large or extra large fonts and large icons. The HP QuickLaunch utility also includes a Desktop Zoom utility which may help make your Mini-Note display a bit easier to see. But this computer has got a super-sharp display, so you may find that you need to tweak the default font sizes in other applications including Firefox if you want to be able to read your screen without squinting.

Using Parted Magic to create new partitions for Linux or other operating systems

While I tend to use Windows XP on a day to day basis, I wanted to make this a dual boot system so I can install Linux on a separate partition. Most Linux distributions aren’t very particular about where they’re installed. You can put them on a second or third partition, or even on an SD card in your card reader. But Windows likes to have the first partition all to itself. So while you may be able to use the Windows installer to set up partitions on the hard drive, I had more success installing Windows XP first, and then using Parted Magic to resize the Windows partition and create additional partitions.

The best time to do this is right after you install Windows. Your main partition will be fairly clean which will make the resizing operation go much more quickly. We’re talking about the difference between a minute or two and a half hour or more. You’ll also save yourself a lot of pain and heartache if something goes wrong and you wind up wiping your Windows partition, because you won’t have spent days loading and configuring all of your favorite programs yet.

I’m going to assume you’re still using a USB flash drive, but you can also use Parted Magic from a CD-ROM. Detailed instructions for setting up either a flash drive or a CD-ROM are available from the Parted Magic homepage. The main difference is that if you’re using a flash drive, you need to use SYSLINUX to make it bootable.

Once you’ve got your installation media:

  1. Reboot your Mini-Note with the flash drive or CD-ROM plugged into a USB port.
  2. Hit F9 and choose the device you want to boot from.
  3. From the boot menu, make sure to selection option 4: Failsafe Settings
  4. W
    ait a few minutes until you’re presented with a command prompt that says “root@PartedMagic:~#”
  5. Type “menu”
  6. Choose Xvesa (if you had tried almost anything other than option 4 in step 3, the system would try to boot using Xorg and your display would look all funny/unusable)
  7. You should now see a graphical user interface that looks a bit like this
  • Click the little blue icon on the bottom of the screen that says “VisParted.” This will bring up a partition manager
  • Your primary hard drive should be listed as /dev/sda. But if it’s not, it shouldn’t be too hard to find since you probably only have one 120GB hard drive connected to your PC. Note that VisParted will say your hard drive is actually closer to 112GB.
  • There should be one large partition labeled as /dev/sda1. You can right click on this and choose the resize/move option and then resize the partition either by dragging the edges or entering a value into the “new size” box.
  • Once your Windows partition is shrunk, you an either leave the rest of your hard drive unpartitioned for future use, create an ext2, ext3 or other partition for Linux, or do something else altogether.
  • Click the Apply button to execute.
  • When Parted Magic is done working its magic, you can reboot your system by clicking on the shutdown menu at the bottom right side of your screen. If everything went properly, you should still be able to boot into Windows, but you’ll find that your Windows partition is smaller.
  • Personally, I decided to make a 25GB Windows XP partition for files and settings, a 15GB ext2 partition for installing Ubuntu or other operating systems, and I made a third NTFS partition for storing data that will be accesible no matter which OS I use.

     

    Laptop and Notebook Technologies

    décembre 22, 2008

    LCD Screen

    LCD screens have evolved since the early laptops with a monochrome screen to ones of vibrant color and high resolution. Newer (high end) laptops ditch LCD (Liquid Crystal Display) in favor of newer low power LED screens, but you only need to know about LCD for the A+ certification exams.

    As a popular choice for desktops and laptops, support for LCD monitors has become ubiquitous in IT support departments.

    For the exam, you should be aware of two types of color LCD screen technologies: active matrix and passive matrix.

    Active Matrix: Active Matrix displays use at least one transistor per pixel on the screen. This allows the electrical charge per pixel be held longer and provides vibrant and fast LCD screens. Active Matrix is also known as a Thin Film Transistor (TFT) display.

    Passive Matrix: Passive Matrix monitors have one transistor per horizontal row and one per vertical column on the display. The monitor sends an electrical signal across one row and down one column, where they intersect, it displays a pixel. This produces much lower quality images and a slower display.

    Though you need to be aware of the two types of LCD screens for the exam, almost all laptop manufacturers have moved to using Active Matrix at the very least.

    Video Adapter

    Just like a desktop computer, the laptop computer has a video adapter. It is frequently much smaller in size than on a desktop computer and often is built-in to the motherboard on the system.

    System Board

    The system board in a laptop is designed for two things: small size and heat dissipation. Two of the major problems laptop manufacturers have is how to fit all of the components into the laptop and how to handle the tremendous heat CPUs, video chips, memory, and hard drives produce.

    The system board commonly contains all of the chips required for the system to run and interface. These include the video adapter, sound card, networking, expansion port circuitry, and more.

    Memory

    Laptop memory is similar to desktop memory, though smaller in size.

    Due to size constraints, most laptops support only one or two memory slots limiting the total amount of memory you can run in the laptop. Most laptops support a maximum of 2GB of RAM.

    Processor

    Some laptop computer use desktop processors, though most use processors designed for the high demand of mobile computing. The primary problem with desktop processors is the amount of heat they generate. A desktop computer can use a series of heat sinks and fans to dissipate the heat which is not possible in a notebook computer due to size constraints. As processor manufacturers develop faster and faster chips, they find the chips produce more and more heat which is extremely difficult to offset.

    Processor manufacturers (such as Intel) design mobile chips to use less power and often run at a slower speed than their desktop cousins.

    Most processors are not field replaceable for laptops and instead need to be replaced by a computer manufacturer authorized technician.

    HakimUunetCommunication

    décembre 19, 2008

    architecture_diagram-ip1

    Release Notes for Cisco IP Communicator Release 2.1

    décembre 6, 2008

    Release Notes for Cisco IP Communicator Release 2.1

    ——————————————————————————–

    Revised: August 11, 2008 OL-11378-03

    These release notes describe the new features and caveats for all versions of Cisco IP Communicator Release 2.1.

    To view the release notes for previous versions of Cisco IP Communicator, go to http://www.cisco.com/en/US/products/sw/voicesw/ps5475/prod_release_notes_list.html

    To access the latest software upgrades for all versions of Cisco IP Communicator, go to http://www.cisco.com/pcgi-bin/tablebuild.pl/ip-comm

    Contents
    •Introduction

    •System Requirements

    •Related Documentation

    •New and Changed Information

    •Installation Notes

    •Limitations and Restrictions

    •Important Notes

    •Caveats

    •Troubleshooting

    •Documentation Updates

    •Obtaining Documentation, Obtaining Support, and Security Guidelines

    Introduction
    These release notes describe new features, requirements, restrictions, and caveats for Cisco IP Communicator. These release notes are updated for every maintenance release and every major release but not for patches or hot fixes.

    Before you install Cisco IP Communicator, we recommend that you review this document for issues that might affect your system.

    System Requirements
    •Network Requirements

    •Server Requirements

    •Client PC Requirements

    Network Requirements
    For Cisco IP Communicator to successfully operate as an endpoint, your network must meet these requirements:

    •You must configure voice over IP (VoIP) on your Cisco routers and gateways.

    •Make sure you configure all interfaces carrying media-type data (voice, video, web conferencing) between its two endpoints to non-autonegotiate speed and duplex (for example, set all ports to 100 MB full duplex). You must also configure Ethernet interfaces on routers and switches in the cloud in this way.

    If the autonegotiate setting is retained, negotiation can occur at any time, and if it occurs during a UDP transmission, that data is lost. Because voice data is UDP, users can experience significant voice quality problems. Similarly if any logical data is transmitted over UDP, serious system impairment might occur.

    •If Cisco IP Communicator is behind a firewall, you must open ports in the firewall. For details about the TCP and UDP port usage for Cisco Unified Communications Manager, see this URL:

    http://www.cisco.com/en/US/products/sw/voicesw/ps556/prod_maintenance_guides_list.html

    •Your IP network must support DHCP with Cisco Option 150 configured with your TFTP server addresses if you want Cisco Unified Communications Manager to auto-locate its TFTP server.

    •To integrate with Cisco Unified Video Advantage, see the “Supported Cisco Unified Communications Manager Releases” section for the minimum Cisco Unified Communications Manager release.

    •To integrate with Cisco Emergency Responder (CER), you need an available Ethernet port on a Cisco Ethernet switch. For details, see the Cisco Emergency Responder Administrator Guide.

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    Note If the computer on which Cisco IP Communicator is running is plugged into the PC port on the back of a Cisco Unified IP Phone, Cisco IP Communicator is not discovered by the CER software. In this case, the Cisco Discovery Protocol (CDP) is blocked and is not detected by CER. Connecting Cisco IP Communicator directly to a switch port prevents this problem.

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    Server Requirements
    Cisco IP Communicator requires Cisco Unified Communications Manager or Cisco Unified Communications Manager Express for call processing. Before you deploy Cisco IP Communicator to users, make sure that Cisco Unified Communications Manager or Cisco Unified Communications Manager Express is set up properly to manage Cisco IP Communicator devices and to route and process calls. For more information, see the Cisco Unified Communications Manager Administration Guide or context-sensitive help in Cisco Unified Communications Manager Administration.

    For an overview of configuration and deployment tasks involving Cisco Unified Communications Manager and Cisco Unified Communications Manager Express, see the Cisco IP Communicator administration guide at this URL:

    http://www.cisco.com/en/US/products/sw/voicesw/ps5475/prod_maintenance_guides_list.html

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    Note If Cisco IP Communicator does not appear in the Phone Type drop-down list in Cisco Unified Communications Manager Administration, install the latest support patch for your version of Cisco Unified Communications Manager: http://www.cisco.com/public/sw-center/sw-voice.shtml

    ——————————————————————————–

    •Supported Cisco Unified Communications Manager Releases

    •Interoperability Notes for Cisco Unified Communications Manager

    •Supported Cisco Unified Communications Manager Express Releases

    •Supported Cisco Unified Survivable Remote Site Telephone Releases

    Supported Cisco Unified Communications Manager Releases
    These releases are supported with Cisco IP Communicator Release 2.1:

    ——————————————————————————–

    Note Cisco Unified Communications Manager is formerly known as Cisco Unified CallManager.

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    •Cisco Unified Communications Manager Release 6.1 (SCCP and SIP)

    •Cisco Unified Communications Manager Release 6.0 (SCCP and SIP)

    •Cisco Unified Communications Manager Release 5.1 (SCCP and SIP)

    •Cisco Unified Communications Manager Release 5.0(4) (SCCP and SIP)

    •Cisco Unified Communications Manager Release 4.2(3) SR1 (SCCP)

    •Cisco Unified Communications Manager Release 4.1(3) SR4 (SCCP)

    This Cisco Unified Communications Manager release is now the minimum release with or without Cisco Unified Video Advantage integration. For details about client PC requirements when running Cisco IP Communicator with Cisco Unified Video Advantage, see Table 2.

    Interoperability Notes for Cisco Unified Communications Manager
    These interoperability notes apply:

    •While Cisco IP Communicator registers and runs many of the functions within Cisco Unified Communications Manager Release 6.1, 6.0 or 5.1, it does not support some of the new features introduced in these releases because Cisco IP Communicator is based on the Cisco Unified Communications Manager Release 5.0 7970 phone firmware. Similarly, some features might not be available when registering Cisco IP Communicator with Cisco Unified Communications Manager Express.

    •Cisco IP Communicator is not supported with Cisco Unified Communications Manager Assistant Release 6.0 or 5.1 (formerly known as Cisco Unified CallManager Assistant and Cisco IP Manager Assistant [IPMA]).

    •When Cisco IP Communicator is using SIP as its call-control protocol, it does not interoperate with:

    –WebDialer

    –Cisco Unified Video Advantage

    –Cisco Unified Communications Manager Assistant

    •To add support for security features in Cisco IP Communicator, download and install the Cisco Unified Communications Manager Release 4.x device pack from this URL:

    http://www.cisco.com/pcgi-bin/tablebuild.pl/callmgr-42

    These versions are supported:

    –Release 4.2: devpack 05

    –Release 4.1: devpack 31

    Supported Cisco Unified Communications Manager Express Releases
    These releases are supported with Cisco IP Communicator Release 2.1:

    •Cisco Unified Communications Manager Express Release 4.1 (SCCP)

    •Cisco Unified Communications Manager Express Release 4.0 (SCCP)

    •Cisco Unified Communications Manager Express Release 3.3 (SCCP)

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    Note When Cisco IP Communicator is running SIP as its call-control protocol, it does not support SRST or Cisco Unified Communications Manager Express. (CSCsh69835)

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    Supported Cisco Unified Survivable Remote Site Telephone Releases
    These releases are supported with Cisco IP Communicator Release 2.1:

    •Cisco Unified Survivable Remote Site Telephony Release 4.1 (SCCP)

    •Cisco Unified Survivable Remote Site Telephony Release 4.0 (SCCP)

    Client PC Requirements
    Before you install Cisco IP Communicator on any PC, the PCs must meet the requirements described in these sections:

    •Platform Requirements

    •Supported Audio Devices

    •Supported Audio Formats

    Platform Requirements
    Table 1 shows the PC requirements and the operating system on which Cisco IP Communicator runs.

    Table 2 shows the requirements when Cisco IP Communicator operates with Cisco Unified Video Advantage.

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    Note Cisco IP Communicator does not support Windows XP Fast User Switching.

    ——————————————————————————–

    Cisco IP Communicator is supported only on Windows 2000, XP, and Vista as shown in Table 1.

    Cisco IP Communicator

    décembre 6, 2008

    Cisco IP Communicator—a software-based application that delivers enhanced telephony support through the PC—is designed to meet diverse customer needs by serving as a supplemental telephone when traveling, a telecommuting device, or as a primary desktop telephone. With Cisco IP Communicator, remote users don’t just take their office extension with them; they also enjoy access to the same familiar phone services that they have in the office.

    Suivre

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