VoIP call with SIM box and gateway

This interactive voice response (IVR) diagram sample shows the Scheme of VoIP call with SIM box and gateway. It was designed on the base of the Wikimedia Commons file: Scheme of VoIP call with Sim box.png. [commons.wikimedia.org/ wiki/ File:Scheme_ of_ VoIP_ call_ with_ Sim_ box.png]
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license. [creativecommons.org/ licenses/ by-sa/ 4.0/ deed.en]
"A SIM box (also called a SIM bank) is device used as part of a VoIP gateway installation. It contains a number of SIM cards, which are linked to the gateway but housed and stored separately from it. A SIM box can have SIM cards of different mobile operators installed, permitting it to operate with several GSM gateways located in different places." [SIM box. Wikipedia]
The IVR diagram example "VoIP call with SIM box and gateway" was designed using ConceptDraw PRO diagramming and vector drawing software extended with the Interactive Voice Response Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.

The vector stencils library "Network layout floorplan" contain 34 symbol icons for drawing computer network floor plans and communication equipment and cabling layouts.
"Networking hardware may also be known as network equipment or computer networking devices. Units which are the last receiver or generate data are called hosts or data terminal equipment.
All these terms refer to devices facilitating the use of a computer network. Specifically, they mediate data in a computer network. ...
Typically, networking hardware includes gateways, routers, network bridges, switches, hubs, and repeaters. But it also includes hybrid network devices such as multilayer switches, protocol converters, bridge routers, proxy servers, firewalls, network address translators, multiplexers, network interface controllers, wireless network interface controllers, modems, ISDN terminal adapters, line drivers, wireless access points, networking cables and other related hardware.
The most common kind of networking hardware today is a copper-based Ethernet adapter because of its standard inclusion on most modern computer systems. Wireless networking has, however, become increasingly popular, especially for portable and handheld devices.
Other hardware prevalent in computer networking includes data center equipment (such as file servers, database servers and storage areas), network services (such as DNS, DHCP, email, etc.) as well as devices which assure content delivery." [Networking hardware. Wikipedia]
The shapes example "Design elements - Network layout floorplan" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Network Layout Floor Plans solution from the Computer and Networks area of ConceptDraw Solution Park.