When crafting a resume with SIP trunking skills, it's crucial to highlight relevant technical competencies, such as SIP protocol knowledge, VoIP implementation experience, and system integration expertise. Emphasize successful project outcomes, showcasing specific achievements like improved communication efficiency or cost reductions. Include certifications or training related to telecommunications and network infrastructure. Detail problem-solving abilities and collaborative experiences, as teamwork is vital in implementation projects. Additionally, demonstrate understanding of customer needs and provide examples of training or support delivered to clients. Tailor your resume to align with the job description, focusing on outcomes that benefit organizations.