Which engineering master's specialisation suits an Electronics and Communication Engineering graduate targeting telecommunications, IoT and network engineering careers?

The three career directions you named, telecom, IoT and network engineering, overlap far more than they compete, so the real decision is whether you want to stay closer to wireless hardware and RF systems or move toward the more software-heavy side of computer networks.

Telecom, Wireless/IoT or Network Engineering: Pick by Interest

• RF, cellular and wireless systems interest: Wireless Communications and Mobile Networks, aiming at RAN engineer or wireless systems engineer roles.
• Devices, sensors and connectivity interest: IoT and Embedded Systems, aiming at IoT engineer or edge computing engineer roles.
• Routers, cloud networking and internet infrastructure interest: Computer Networks and Network Engineering, a more software-oriented path.
• Avoid VLSI and pure Signal Processing as a first choice, since both move away from telecom and network careers specifically.

Telecommunications vs Wireless/IoT vs Network Engineering

This Information Is Also Available On

SMU Lyle School of Engineering's MS Network Engineering program page; Northwestern Engineering's Network and Communication Systems specialisation page.

My Advice

Before you finalise the specialisation, check the actual course list rather than just the degree title, since I have seen two programs both called Telecommunications turn out to be RF-focused in one case and purely networking-focused in the other. If you want to keep your options genuinely open across telecom, IoT and networking, look for a program explicitly combining wireless communications, computer networks and IoT protocols in one curriculum rather than choosing on title alone.