Visit the ISE Buyer's Guide for products and solutions related to Core/Legacy.   The educational content of this category relates to the evolution of the core/copper legacy infrastructure that Telecom/Communications Service Providers' (CSPs) must use to support the mobile and fixed networks.  Best practices and guidance are targeted to telecom providers, contractors and others aligned with the ICT industry.



First Real-Time Streaming Video Transmitted Over UHF TACSAT in Army Demonstration 

March 7, 2024
Capability offers low-power solution for tactical communication.
Photo 8540604 © Photowitch |

Quiz: Are You a Telecom History Scholar?

March 5, 2024
Test yourself to discover how much you know about some of the industry’s most-significant milestones.
Don With Truck
Copper Expert

400 Columns + One Farewell

May 1, 2022
Don McCarty, ISE magazine's Copper Expert, reflects on his career as a trainer and columnist.
ISE Columnist Don McCarty, OSP Expert

How come?

April 1, 2022
Field technicians call or send emails or texts to me asking questions about a problem they are encountering when provisioning and maintaining the copper infrastructure. These ...


PLP episode 10 NEW
Video Vault

Episode 10: Fiber Optic Closure Specs Explained – GR-771-CORE: Freeze/Thaw and Water Resistance

April 1, 2022
Preformed Line Products (PLP) video series: Fiber Tips and Tricks Each episode will include one concept, tip, or piece of information intended to help fiber optic splicer and ...
ISE White Paper, Fujitsu, Modernizing Legacy, feature image
Network Transformation/Edge Compute/IoT/URLLC/Automation/M2M

Modernizing Legacy SONET/SDH Networks Using Circuit Emulation

Feb. 8, 2022
Safely and effectively transforming costly legacy networks to IP Many of today’s service providers are still carrying traffic on networks based on decades old SONET/SDH equipment...
ISE Columnist Don McCarty, OSP Expert

Provisioning And Maintaining POTS Circuits

Feb. 1, 2022
I feel privileged to have participated in the growth of the telecommunications industry. I’ve trained copper cable technicians for 50 years and, […]
ISE Columnist Don McCarty, OSP Expert

Cable Locating: Beyond The Basics

Dec. 1, 2021
In earlier columns I have discussed how to get started with your cable locator with tips about the types of hookups, tone transmission, etc. This month I discuss some of […]
ISE Podcast, Fujitsu, Modernizing Legacy Networks

Preparing for the Future: A Three-Phased Approach to Modernizing Legacy Networks

Nov. 4, 2021
As service providers transform their businesses to become agile and responsive and support configurable digital services, the question of network modernization is more and more...