Call Sandwich is a certified Elite Retell AI partner — the highest tier in Retell's partner program. We specialize in building enterprise-grade voice AI integrations for complex telephony environments that standard agencies won't touch. Our team connects Retell to legacy and modern stacks alike — ViciDial, Asterisk, FreeSWITCH, NICE inContact, Avaya, Talkdesk, Genesys, and more — handling everything from SIP trunk configuration to full white-label AI platform development. Whether you need outbound AI sales agents, enterprise inbound routing, AI + human handoff, or a fully white-labeled Retell platform, Call Sandwich delivers production-ready, multi-tenant deployments built to scale.

HeyPoppi is an AI voice platform specializing in business automation. Our natural-sounding AI receptionists answer calls, qualify leads, and schedule appointments, helping business owners save time and capture more opportunities. Based in Greenville, South Carolina, HeyPoppi serves industries many industries across the board. By partnering with Retell AI, we deliver reliable, human-like voice experiences at scale for local businesses.

Training, research, and development of call agents with AI. My name is Sonia, and I am passionate about voice AI. I firmly believe in all the possibilities it offers to businesses, allowing them to improve their communication and focus on those areas that can bring the most value to people.