Callab AI
AI voice agents for on-prem telephony stack.
Based based in San Francisco, CA, USA, Callab AI works in b2b.
Profile
58% of the $400B call center industry runs on on-prem phone systems, and until now bringing AI voice automation to them meant ripping out their entire infrastructure first. That's the largest unserved segment in the market. Callab AI connects directly to legacy PBX systems like Avaya, Cisco UCM, and Mitel, and automates up to 70% of call volume with zero migration needed.
We plug into these environments without requiring a rip-and-replace. We serve clients across three continents, including brands like Dunkin Donuts.
Its activity falls under b2b; the profile below is assembled from public directory data.
Its base of operations is San Francisco, CA, USA.
Directory data places it at the Spring 2026 stage.
Its team size is recorded as 7 employees.
Directory analysis
Callab AI delivers AI voice agents that integrate directly with legacy on‑premises telephony systems such as Avaya, Cisco UCM, and Mitel, enabling up to 70% automation of call volume without requiring a full infrastructure overhaul. The company targets the 58% of the $400 B call‑center market that still operates on on‑prem phone systems, providing a low‑friction solution for AI voice automation. It serves clients across three continents, including brands like Dunkin Donuts.
Positioning: Callab AI is positioned to capture a sizable unserved segment of the call‑center market by offering a zero‑migration integration for legacy PBX environments. Its focus on on‑prem systems differentiates it from competitors that require cloud migration, potentially giving it a niche advantage in traditional call‑center deployments.
Note: Callab AI offers zero‑migration AI voice automation for legacy PBX systems.
Auto-generated directory analysis from public data · updated 7 Oct 2026. Informational only, not investment advice.
| Sector | B2B |
|---|---|
| Headquarters | San Francisco, CA, USA |
| Country | USA |
| Employees | 7 |
| Stage | Spring 2026 |
Website: callab.ai
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