OC3, OC12 & OC48 Bandwidth-Ideal Solution For High End Users

The ideal solution for high end bandwidth users where connectivity is essential for operations isn't a simple T1 or DS3 dedicated line...you need an "OC" fiber optic network. So just what is OCx, what can it do for you, and what do you need to know?

What is an OCx Circuit?

'OC' stands for Optical Carrier and is used to specify the speed of fiber optic networks conforming to the SONET standard. SONET, (Synchronous Optical Networks), includes a set of signal rate multiples for transmitting digital signals on optical fiber. The base rate (OC-1) is 51.84 Mbps. Certain multiples of the base rate are provided below with bandwidth amounts. Asynchronous transfer mode (ATM) makes use of some of the Optical Carrier levels.

Optical Carrier lines provide content providers, ASP's, ISP's & large enterprises with dedicated Internet connectivity. These Optical Carrier Level circuits are an ideal solution for high end bandwidth users where connectivity is essential for operations. Some examples are large data centers, high tech research facilities, university infrastructure, airport complexes, and casino video security and data systems.

What is an OC3?

An OC3 can be three DS3s (T3s) or one 155M pipe. The benefit in using DS3s is that each can be separated back out as individual T1s (each with 24 channels). To put it into perspective, the speed of an OC3 connection is 155Mbps. This is equivalent to 3 T3 lines or 100 T1 lines. An OC12 connection is 622Mbps, equivalent to 14 T3 lines or approx. 414 T1 lines.

What is an OC12?

An OC12 is approximately equal to 4 OC3s and runs at 622 Mbps. which makes it an excellent point-to-point IP delivery connection. The greatest benefit to an OC-12 is that bandwidth can be added to a business as it grows without any major system overhauls. An OC12 can also allow a business to have unlimited IP addresses which insures that growth is never limited...

What is an OC48?

An OC48 works as a reliable fiber optic backbone for large networks which require volume extensive voice/data/video traffic. It is a long-haul backbone fibre connection capable of transmitting data at 2.45 Gbps. To put it into perspective the speed of an OC48 is the equivalent of having 48 T3's OR 1,344 T1 lines.

The pricing for these type of connections can vary widely depending on the carrier, location of service and the exact application for which the connection is intended to be used. Due to this complexity it is suggested to use the services of a consultant such as "DS3-Bandwidth.com" to research available providers and find the best fit to meet a specific requirement.

Michael is the owner of FreedomFire Communications....including Business-VoIP-Solution.com. Michael also authors Broadband Nation where you're always welcome to drop in and catch up on the latest BroadBand news, tips, insights, and ramblings for the masses.

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Setting Up A Secure Home Wireless Network - 2 Simple Steps To Protect Your Privacy

Securing a home wireless network is a two step process. The first step is to ensure network security by securing the wireless access point or router. All of this can normally be done through the web based software interface of the device, by typing in the default address of ?92.168.0.1?

The first thing that needs to be changed is administrator username and password. Many networks are hacked into, simply because nobody bothered changing the default values. This is the same as most VCRs still blinking 12:00 because no one changed the time. Once this is done, enable MAC address filtering, and add computers based on their MAC address. This option will allow only those specified computers to connect to the network, but will not however guarantee total security.

The network SSID defines a name for the network. The default value of this should be changed to an obscure and long string. This value should be written down in a safe place and entered into the machines that are allowed to connect. Disabling the broadcast of the network SSID also provides an extra layer of security as the network will not advertise itself to outsiders.

Encryption should also be enabled. The default encryption is normally weak and can be easily broken. Normally WEP (Wireless Equivalent Privacy) is used for data encryption, however where available try and use WPA-PSK encryption. This method uses 256 bit encryption for transmitting data and the key also changes so provides a far more secure alternative to WEP.

Some routers have firewalls built in. Where available make sure that this option is enabled.

The second step of securing a home wireless network is securing each individuals PC. This can be done by installing a software firewall (this may not always be necessary if a hardware firewall is installed), antivirus software, anti-spam and pop-up blocking software. It is essential to keep this software up to date, as downloading the latest security updates for the operating system and web browser you are using.

You can manage your home network yourself if you have the time, or you can buy a home networking software that will monitor your network and alert you to any intruders or weak security measures for about $30. Whichever way you choose to do it make sure you secure your home wireless network.

About the Author

Wallace Renckers is a wireless networking fanatic who runs Home Wireless Network. Get your free wireless network software that makes setting up a home wireless network a breeze. Solve your own connectivity and security problems and leave tech support alone.

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