Continuing the panel discussion from 2024 at MWC about decarbonizing our supply chain at Deutsche Telekom, we are today joined by three key players in the industry to discuss how telcos are innovating in building and operating their network while keeping sustainability in momentum. Focus is on Deutsche Telekom's comprehensive sustainability strategy building on our CMD commitment (keeping energy consumption flat and 55% reduction of carbon emissions across the value chain until 2025), via network modernization and AI-driven optimizations across domains. Today, we will discuss the innovative technologies powering DT’s network and their contributions to our climate targets. 
We will look into it from 3 areas: 
- Hardware innovation
- Software innovation and
- Architectural improvements. 

Discussion on how telcos are innovating in building and operating their network while keeping sustainability in momentum.

Saima Ansari is the CR Segment Lead at Deutsche Telekom, responsible for driving sustainability and innovation across the Technology & Innovation board area. With a strong passion for sustainability and a commitment to leveraging technology for environmental impact, Saima leads cross-functional teams to advance Deutsche Telekom’s climate goals. She spearheads initiatives across architecture, engineering, and group strategy units, focusing on improving energy efficiency in mobile and fixed network infrastructure while embracing circularity principles. 
In addition, she plays a key role in addressing industry-wide sustainability challenges, leading projects like Green Future Networks at the NGMN Alliance. Saima holds a Bachelor’s degree in Electrical and Electronics Engineering from India and a master’s degree in Lasers and Photonics from Germany.

Saima Ansari 2025

Saima Ansari

CR Segment Lead, Technology & Innovation Board Area, Deutsche Telekom AG

Subhagata Mukherjee (Subho) is the Vice President and Global Head of Sustainability at Nokia and leads the company’s global sustainability strategy, programs, and initiatives, including its overall Environmental, Social & Governance (ESG) responsibilities. In his previous roles at Nokia, Subho has led strategic initiatives across corporate strategy, technology strategy, research, partnerships, and venture capital investments, led global communications for group CEO, as well as led communications, marketing and business development across markets and business groups. 
Subho’s focus areas include climate, circularity, bridging digital divide, industrial decarbonization, responsible supply chain, human rights, responsible use of technology and new incubations in climate and nature related technologies. Under his leadership, Nokia featured as the most sustainable company in telecoms sector by Corporate Knights Global 100 ranking in 2025 as well as committed to 2040 SBTi Net Zero greenhouse gas emission targets.
Subho holds MBA from Asian Institute of Management, Philippines and from Nanyang Business School, Singapore. He is trained as a chemical engineer from Jadavpur University, India and has attended Strategic Leadership of Technology & Innovation from Harvard Business School Executive Education program, and Sustainability Leadership course from MIT Sloan school of management. 


Subho Mukherjee 2025

Subho Mukherjee

Vice President, Global Head of Sustainability

Jasmin Ella Masic works in Group Function Sustainability at Ericsson, driving the area of decarbonizing Industries and Society. Supporting operators, enterprises and society to use connectivity to reduce their environmental impact and increase social sustainability. Jasmin and the team collaborate across all functions to integrate and drive the importance of mobile connectivity to connect the unconnected, drive innovation and reach Net Zero together. 

Jasmin Ella Masic 2025

Jasmin Ella Masic

Sustainability Manager Group Function SCR, Ericsson 

Denise Lee is Vice President for Cisco’s Engineering Sustainability Office where she leads a team that is defining Cisco’s long-term sustainability vision and roadmap, building new business blueprints and embedding prototype offers across multiple portfolios.

Denise Lee 2025

Denise Lee 

VP, Engineering Sustainability Office at Cisco

Denise Lee

Sessions where Denise Lee takes part

Sustainable Network Innovation