Network Infrastructure Diagram - Router, LAN, Wireless, and ISDN Connections #306743 (License: Personal Use)

This technical illustration depicts a multi-functional router acting as the hub for diverse connectivity options-including dual ISP links (ISP 1 & ISP 2), wired LAN, wireless LAN, ISDN PBX and phones, and analog phones-while incorporating layered security such as anti-virus, firewall, VPN, and vulnerability database. Arrows indicate data flow directions, highlighting redundancy, load balancing, and external/internal traffic separation.

Used in networking tutorials, IT certification study guides, vendor documentation, or enterprise infrastructure planning pages; targets users seeking to understand integrated network topologies, device interoperability, or home/office network design.