The Cisco 4000 Series Integrated Services Routers (ISRs) are modular routers with various LAN and WAN interfaces providing efficient traffic handling, Appliance-level performance, security and optimization for the network.

1. Introducing Cisco ISR4K Routers

2. Cisco ISR 4000
The Cisco 4000 Series Integrated Services Routers (ISRs) are modular
routers with various LAN and WAN interfaces providing efficient traffic
handling, Appliance-level performance, security and optimization for
the network.
https://ciscolicense.com/lic/cat/networking/router/isr/

10. https://ciscolicense.com/lic/cat/networking/router/isr/4000/

11. What is ISR 4000 PLR License?
Customers can use the offline Cisco’s Permanent Reservation License (PLR) to
register all product instances and full features, including Performance, Boost
and HSEC licenses, permanently and forever.
https://ciscolicense.com/blog/activating-plr-license-on-ios-xe/
For more Information about licensing solutions please contact us at sales@Ciscolicense.com