Currently, the market offers a great variety of digital boards focused on building telecommunications systems that can combine 32 lines of E1 digital streams with any form of telephony-from PSTN to VoIP. When choosing the E1 digital phone card for the test, we chose the single-port TE121 card from the American company Digium, since this developer is the manufacturer of the most popular and widespread Asterisk platform in the world.

Today we will talk about a very simple, but very useful device, the Adder ALPV 150P VGA extenders with cable power. Using a twisted pair (CAT5 cable), this device can transmit a signal up to 150 meters away. Moreover, with a resolution of up to 1920x1080, that is, Full HD. This device greatly facilitates the installation of information panels and monitors at various sites from shops and train stations to trade centers and laboratories.

In an office, business, or home, you may need to connect a USB device at a distance of tens or hundreds of meters. For example, a USB key, printer, or specialized hardware. In this case, you will have to look for a USB extension cable, possibly wireless. Today we will talk about similar devices from the company Icron-extensions for different tasks: fast, wireless and long-range.

Samsung presents a powerful office telephone network server over IP. In addition to performing the functions of an office PBX and access to external IP telephony networks, it can manage a local computer network, provide Internet access, work with e-mail, and has a modular structure for easy expansion.

The new VPN router from Level One is specially designed for small companies that need to protect the internal network as much as possible, but at the same time install a public FTP, Web or mail server. A hardware DMZ port, firewall, and support for up to 40 VPN tunnels is a great solution for small businesses.