Not CTL/Lumen, but it’s the same playbook: AT&T copper network retirement set to accelerate as legacy base shrinks to 1%
https://www.lightreading.com/broadband/at-t-copper-network-retirement-set-to-accelerate-as-legacy-base-shrinks-to-1-

Lumen Technologies Launches Dual Path Wavelength Service and Advances AI-Powered Service Assurance Capabilities
https://www.marketscreener.com/news/lumen-technologies-launches-dual-path-wavelength-service-and-advances-ai-powered-service-assurance-c-ce785cd8d18af523