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Sunday, May 18, 2008

The Fundamentals Of OC3 Bandwidth...What It Does For Your Business

When searching for just the right bandwidth solution for critical business network applications a common choice is what's termed an OC3 circuit. An OC3 circuit works as a reliable fiber optic backbone for large networks with substantial voice/data/video traffic needs. For example....corporate headquarters phone lines (PBX and/or VoIP), company Supply Chain Management (SCM) systems, facility high security networks, Hospital medical imagery and diagnostic systems, data recovery and backup networks, video conferencing facilities, multi-media or virtual design centers, and ISP backbones.

OC3 is the abbreviated term for Optical Carrier level 3, and is used to specify the speed level of fiber optic networks over SONET. The speed itself is measured through SONET (Synchronous Optical Network) standards.

Specificly, the Synchronous Optical Network (SONET) includes a set of signal rate multiples for transmitting digital signals on optical fiber. OC stands for Optical Carrier and the number following specifies the speed of the fiber optic networks conforming to the SONET standard. The base rate OC1 is 51.84 Mbps. Therefore an OC3 circuit delivers 155 Mbps.

OC3 is optical carrier (fiber) connected by equipment capable of speeds up to 155.5 Mbps......and is designed to take, synchronize, and transport data and voice at that speed of 155 Mbps reliably. Due to their potential load delivery capacity....OC3 applications are used most often by large enterprises with significant bandwidth requirements or as an ISP backbone. By definition.....an OC3 is the equivalent of 84 T1s or 3 DS3s/T3s. To put it in perspective....an OC3 circuit is capable of 2,000 simultaneous voice transmissions with each transmission carrying variable data types alongside the voice!

An important factor to consider is that OC3s can be burstable, which allows you to start small and increase your bandwidth as your needs grow. A Burstable OC3 is the ideal solution for businesses who seek ultra-fast connectivity for their Internet needs.....and don't require full OC3 load capacity just yet but may in the future. Options cover selection from 60, 70, 80, 90, 100, 120, 140, or a full 155 Mbps of service.

Fiber Optics is a technology that uses glass (or plastic) threads (fibers) to transmit data. A fiber optic cable consists of a bundle of glass threads, each of which is capable of transmitting messages modulated onto light waves.

Fiber optics has several advantages over traditional metal communication lines. They have a much greater bandwidth than metal cables. This means they can carry more data. They are also less susceptible than metal cables to interference, and they are much thinner and lighter than metal wires. This enables the data to be transmitted digitally over fiber optics rather than resorting to analog transmission.

Additionally, OC-3 is most often made up of what is called a "SONET ring" to maintain it's reliability (redundancy) during its high speed transmissions.

A common method of back up used with SONET ring is called a "bi-directional ring topology." This bi-directional ring is a physical topology which deploys two sets of fiber strands.

The first strand for the connection is for sending and receiving. The second strand will reroute traffic from the original transmission in another direction should the first strand break or malfunction. Therefore bi-directional ring topology helps ensure constant reliability within an OC3 SONET based network.

So just what does an OC3 circuit do for your business?

With an OC3 bandwidth solution your network will deliver optimum speed and load for any large scale voice/data application requirement you have....with reliable and secure digital technology performance.

Michael is the owner of FreedomFire Communications....including DS3-Bandwidth.com and 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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Your IP - Now My IP

Internet Protocol (IP) address is given to each device connected to the Net. IP addresses consist of four numbers and look something like 117.0.0.1. All these numbers are usually assigned to Internet Service Providers (ISPs) within the region-based blocks. An IP-address can be used to identify the country or region from which a device is connecting to the Internet.

Earlier, ISPs issues one IP-address to each user. These are called static IP addresses. ISPs now issue IP addresses in a dynamic fashion out of a pool of addresses (using DHCP). These are referred to as dynamic IP addresses. With virtual hosting, a single machine can act like multiple machines (with multiple domain names and protocol addresses).

IP Address reveals your...

Using an IP-address it is quite easy to identify the place including the country, state, city, using a few web applications. Finding IP-address of the Yahoo, Rediff, Hotmail, etc, email senders is easy. Google masks the outgoing IP-address of the sender who sends mails using the Gmail web interface.

Using IP-Tracker like software installed on remote devices, you can access the same from anywhere. IP-Tracker constantly monitors the dynamic IPaddress of the device and whenever the IPaddress changes, it sends a mail to your inbox notifying you of your new IPaddress.

How can I change my IP Address

If you are using a dial-up connection, you can simply dialup through an alternate access number

For cable/DSL with a router:

Open your router control panel

Increase your MAC address by one number

Then disconnect and reconnect your router. Now, after doing this, your ISP will give a new IP.

If you find any problem, switch back to previous MAC

How can I hide my IP Address

You can hide your IPaddress using...

IP changer software.

anonymous software

Advantages of knowing my IP Address

Knowing your IPaddress can allow you to access

services running on your machine (E.g., online games)

servers (FTP, web, mail)

remote access utilities (MS Remote Desktop, GoToMyPC, PCAnywhere).

Virtual Hosting Explained

Virtual hosting allows a single machine act like multiple machines (with multiple domain names and IP-addresses).

How can I know the IP-address of the person whom you have been chatting in your IM (Instant Messenger)

If you want to know the IP, run a packet sniffer and initiate a file transfer.

You will need to set up a file transfer in order to see the internet protocol address of the person you are communicating with; the transfer will go pretty much direct to the other person's computer. Otherwise you get the protocol address of the server.

If you run a packet sniffer, you need to send a request using ICMP, and then TCP with the SYN ACK flag set) and the target computer will respond. TCP SYN ACK packet gives you the target device's port number, IP-address, etc.

But there are exceptions. If the target device runs behind a router with a hardware firewall, you may not get the actual protocol address you are looking for; instead, a WAN IP of some sort usually the one from the ISP will be displayed.

In conclusion, since internet protocol addresses reveal your physical location and also gives more details to others; it is advisable not to display your protocol address except for essential and important communication. Mask the IP-address for you and your device's security sake.

Resources:
Hacking - What, When & How
Browsers - Gateway to the Internet
Strategies to Learn English Article

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