This multi-access enterprise WAN network topology diagram is a professional visualization template designed for enterprise hybrid access scenarios. It intuitively presents the multi-scenario interconnection structure of the enterprise internal local area network, PSTN dial-up access, DDN leased line access and Internet access, clearly marking the distribution and communication paths of core switches, servers, firewalls, routers and various terminal devices, fully showing the multi-link access, security protection and business collaboration logic of the enterprise network. The template comes with complete device icons, connection lines and functional partition descriptions, eliminating the need to design the topology framework from scratch, allowing for quick and professional typesetting directly after application. It is widely applicable in scenarios such as writing multi-access enterprise network deployment plan documents, demonstrating hybrid access network architectures, making classroom enterprise network teaching courseware, interpreting at network security planning seminars, creating IT operation and maintenance manuals, and assisting in network optimization and fault troubleshooting analysis.