Callbooster

What Callbooster does

Callbooster is a privately held French business-to-business communications technology company operating the CallBOOSTER 360 ecosystem platform. The platform is built as a modular architecture in which three core services operate independently but are designed to deliver greater value when combined: Gestion d'astreintes (on-call management for 24/7 scheduling and real-time alerts), Permanence Pro'Fil (professional phone answering and message management), and Téléphonie IP (cloud-based IP telephony). Founded in 2001 and headquartered in France with a workforce of five employees, the company targets large enterprise and multi-site organizations with mission-critical, always-on communication requirements.

The company's technology stack centers on integration interoperability and configurable modularity rather than proprietary AI or data-driven automation. Customer adoption is anchored by an enterprise field-sales motion using a structured four-step engagement model — Discovery (analysis of the existing communication ecosystem), Conception (custom solution design), Deployment (gradual rollout with team training), and Evolution (ongoing adaptation as the customer grows). Callbooster monetizes through a modular subscription pricing model billed monthly, where customers activate only the services they require; pricing is quote-based given the bespoke enterprise nature of deployments.

Callbooster's go-to-market is consultative and regionally focused on France and adjacent European markets, with customer logos spanning pharmaceutical manufacturing (Catalent), energy services (Dalkia, Excela), blood and health services (EFS), facility management (ONET), IT services (NCI, Toshiba), and critical infrastructure / data centers (Vertiv). The company maintains no disclosed funding rounds, no parent company, no subsidiaries, and no public revenue figures, and operates without any disclosed partnerships, certifications, or AI capabilities.

Name

Callbooster

Legal name

Callbooster

Website

https://callbooster.fr

Company type

Private

Operating status

Operating

Headcount range

1–10 employees

Short description

Callbooster is a privately held French B2B company that operates the CallBOOSTER 360 modular ecosystem platform, combining on-call management, professional phone answering, and IP telephony for enterprise customers with 24/7 communication needs. Founded in 2001 and based in France.

Ownership category

akta.pro rank

Product category

Unified Communications Platform

NAICS

Wired and Wireless Telecommunications (except Satellite) (5171), Telephone Answering Services (561421), Telephone Call Centers (56142)

SIC

Services-Telephone Interconnect Systems (7385), Telephone Communications (No Radiotelephone) (4813)

akta.pro primary industry

Cloud PBX & Hosted Telephony (HDAIAHAB)

akta.pro secondary industries

Technical Support & Helpdesk Contact Centers (BPAAAAAI), Contact Center (CCaaS) & Customer Engagement Voice (HDAIAHAF)

Keywords

• On-call scheduling
• Phone answering services
• IP telephony
• Communication alert management
• Unified communications platform

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations

Revenue model

1. CallBOOSTER 360 Modular Subscription: Flexible modular subscription model where customers activate only the services they need. Services include independent on-call management, professional phone answering, and IP telephony. Pricing varies based on activated modules and usage requirements.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Callbooster provides CallBOOSTER 360, a flexible communication ecosystem platform that bundles three independent services for enterprise customers: Gestion d'astreintes (on-call management), Permanence Pro'Fil (professional phone answering), and Téléphonie IP (IP telephony). Customers activate only the modules they need, each of which operates independently yet delivers enhanced power when combined. The platform enables organizations with continuous operations to manage communication flows, coordinate on-call personnel, and maintain professional phone coverage around the clock.

Product overview

Callbooster offers CallBOOSTER 360, a 100% flexible platform for managing communication flows and real-time alerts. The ecosystem comprises three independent but combinable services: Gestion d'astreintes (on-call management), Permanence Pro'Fil (professional phone answering), and Téléphonie IP (IP telephony). Each service can be activated independently but delivers enhanced power when combined together, allowing organizations to build reliable and cost-effective solutions tailored to their specific needs.

Differentiator

Problem solved

Functional benefit

Brands

• CallBOOSTER 360: 100% flexible ecosystem combining independent services including astreinte management, telephone permanence (Pro'Fil), and IP telephony

Named customers9 records

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators1 record

Recent moves4 records

Expansion highlights4 records

Emerging players

• OnOff: Cloud telephony provider offering virtual phone numbers and VoIP apps for businesses — an emerging player with partial overlap in the IP telephony / phone answering space.

Broad incumbents

• Genesys: Large enterprise CCaaS and customer experience platform offering telephony, routing and 24/7 contact-center capabilities — overlapping with Callbooster's answering service and on-call management but as part of a much broader suite.
• Alcatel-Lucent Enterprise: Global enterprise communications vendor (Rainbow UCaaS, OmniPCX telephony) competing for the same large-enterprise IP telephony RFPs as Callbooster, with broader portfolio reach.
• Mitel: Established business communications vendor offering cloud and on-prem telephony, UC and contact-center solutions — broad incumbent with overlapping telephony and on-call-style capabilities for enterprises.

Regional players

• Orange Business: French telecom incumbent providing enterprise IP telephony, UCaaS and managed communications services — a regional competitor targeting the same French enterprise customers as Callbooster.
• Dstny: European cloud communications provider delivering UCaaS, telephony and collaboration tools across Benelux, France and the Nordics — comparable regional competitor in cloud PBX for SMB and mid-market.
• Bouygues Telecom Entreprises: French enterprise telecom operator offering fixed-line IP telephony, UCaaS and managed communications — regional incumbent competing for the same French enterprise telephony budgets as Callbooster.

Direct peers

• 8x8: UCaaS and CCaaS vendor delivering cloud telephony, call routing and integrated communication workflows to enterprises — directly competing on the IP telephony and call-handling functionality Callbooster sells.
• RingCentral: Global cloud PBX/UCaaS provider offering IP telephony, on-call/after-hours coverage and contact-center features for enterprises — directly overlapping with Callbooster's IP telephony and answering modules at much larger scale.
• Vonage: Cloud communications platform with VoIP/UCaaS and programmable telephony APIs used by mid-market and enterprise customers — directly comparable to Callbooster's cloud telephony offering and ecosystem approach.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company/callbooster

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Callbooster