Here are some of the key functions and responsibilities of a Telecommunication Consultant: 

1. Assessment and Analysis: Consultants evaluate the current telecommunication systems, networks, and technologies in use by the client. They identify strengths, weaknesses, opportunities, and potential areas for improvement.
2. Strategic Planning: Based on the assessment, consultants develop strategic plans that outline how the client can achieve their telecommunication goals. This might involve recommending new technologies, upgrades, or changes to existing systems.
3. Technology Recommendations: Consultants stay up-to-date with the latest developments in the telecommunications industry. They recommend appropriate technologies, software, hardware, and solutions that align with the client's needs and budget.
4. Cost Optimization: Consultants work to help clients reduce costs while maintaining or improving the quality of their telecommunication services. This might involve renegotiating contracts with service providers, identifying cost-efficient solutions, or eliminating unnecessary services.
5. Network Design and Optimization: For businesses and organizations, consultants can assist in designing and optimizing telecommunication networks, ensuring efficient data and voice communication across various locations.
6. Vendor Selection: Consultants aid in selecting the right telecommunication vendors, service providers, and equipment suppliers. They can guide clients through the vendor selection process and help negotiate contracts.
7. Project Management: If the client is implementing significant changes or upgrades to their telecommunication infrastructure, a consultant can oversee the project, ensuring it's executed smoothly, on time, and within budget.
8. Security and Compliance: Consultants address security concerns related to telecommunication systems. They recommend measures to safeguard sensitive data and ensure compliance with relevant regulations, such as data privacy laws.
9. Troubleshooting and Support: When issues arise with telecommunication systems, consultants can provide troubleshooting assistance and help clients find effective solutions to minimize downtime.
10. Training and Education: Consultants might provide training sessions to the client's employees, educating them about the proper use of telecommunication systems and technologies.
11. Scalability and Future Planning: Consultants help clients plan for the future by considering the scalability of their telecommunication systems. They ensure that the solutions recommended today can accommodate the client's growth and changing needs.