Call Sandwich
Where Enterprise Telephony Meets Voice AI
About Call Sandwich
Call Sandwich (Call Sandwich Inc.) is a voice AI agency established in 2023 that builds AI phone agents and the telephony infrastructure behind them. Its contact page lists an address in Thousand Oaks, California. It is an Elite-tier Retell AI partner, listed since June 2024, and an official Jambonz partner, with a focus on enterprise and complex phone environments.
The team builds inbound, outbound and blended agents and connects them to SIP trunks, PSTN, PBX systems like Asterisk and 3CX, and contact-centre platforms such as Genesys, Avaya and NICE. Typical work includes outbound sales and lead qualification, IVR replacement, warm AI-to-human handoff, appointment setting, PCI-compliant collections and white-label platforms for resellers. It also offers sipsandwich, a small self-service tool that links an existing PBX to Retell agents.
Services
- Inbound, outbound and blended AI voice agents
- Telephony infrastructure: SIP trunking, PSTN, Jambonz
- PBX and contact-centre integration
- CRM integrations (Salesforce, HubSpot, GoHighLevel, Zoho)
- Prompt engineering, QA and load testing
- White-label voice AI platforms
Services
Industries
Use Cases
Business Problems
Automation Platforms
Voice AI Platforms
Software Expertise
Business Size Served
Countries Served
Partner Badges
Call Sandwich FAQ
Where is Call Sandwich based?+
Call Sandwich is headquartered in Thousand Oaks, United States.
When was Call Sandwich founded?+
Call Sandwich was founded in 2023.
How many employees does Call Sandwich have?+
Call Sandwich has 1-10 employees.
What services does Call Sandwich offer?+
Call Sandwich offers Voice AI, AI Agents, Conversational AI, White-Label Partnerships, System Integration and CRM Automation.
Which platforms and AI models does Call Sandwich work with?+
Call Sandwich works with Zapier, Make and n8n.
Which industries does Call Sandwich serve?+
Call Sandwich serves Energy, Healthcare, Retail, Technology and Customer Support.
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