WAN Telephony and Troubleshooting

In this week, I explored different WAN telephony technologies. I learned about SONET, T1, and T3 lines. SONET (Synchronous Optical Network) is a high-speed network used to transfer large amounts of data using fiber optics. It is very reliable and mostly used by internet providers. T1 and T3 are older digital lines. T1 carries data at 1.544 Mbps and is often used for voice and data. T3 is much faster, carrying data at 44.736 Mbps. These lines help in connecting locations that are far from each other.

I also studied different ways to connect remotely to a network. Some common remote access methods include VPN, dial-up, and broadband connections. A VPN creates a secure tunnel over the internet so users can safely access their work network from home or anywhere else. Dial-up is an older method using phone lines and is very slow. Broadband is faster and more commonly used today. These methods are important for remote workers or for connecting branch offices to the main office network.

Learning to troubleshoot WAN issues was also an important part of this. Sometimes a WAN connection may be slow or stop working. I learned how to check for problems like bad cables, router misconfiguration, or service provider outages. Using tools like ping and trace route can help find where the problem is. I also learned how to look at router logs and test hardware to find faults. Step-by-step checking helps solve the problem faster.

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