Celya

What Celya does

Celya is a French IT and telecommunications service provider specializing in open-source VoIP infrastructure built on Asterisk, FreePBX, VICIdial, OpenSIPS, and complementary platforms. The company delivers Asterisk-based IPBX solutions, three-tier call center software (Basic, Évolué, PRO supporting 1-1000 agents), interactive voice servers (IVR/SVI), SIP trunking, and managed hosting services to French enterprises. Through its ARCEP-licensed Celyop brand (held since 2009), Celya operates as a licensed telecom operator providing fiber, SDSL, ADSL/VDSL, and SIP trunk connectivity across two redundant data centers in Nantes and Paris.

The company monetizes through a hybrid model combining professional services (system integration, consulting, custom development), recurring subscriptions (SIP trunking, SaaS call center, hosted telephony), and managed hosting revenue. It serves B2B enterprises primarily in France across verticals including shipbuilding (STX France, 2,500 Yealink endpoints deployed), gas compliance (Qualigaz), telecommunications (SS7 Mtarget), aerospace/defense (EUROCAE-compliant systems), and call center operations. Go-to-market operates through direct enterprise sales across three regional agencies (Nantes, Rennes, Paris), supplemented by referral partners, business introducers, and a distribution partnership with IT-Logiq for Yealink hardware.

Celya differentiates through deep Asterisk expertise (Digium SELECT partner status), ARCEP telecom operator licensing, and specialized capabilities including EUROCAE aviation-standard modifications and high-availability OpenSIPS/Asterisk security architectures. The company maintains sub-brands (Asterisk Conseil, Asterisk Support, Asterisk Développements, Mavisioconf) and is a member of the Alliance Libre open-source expertise pole. Legal entity is Celya SA (SAS), headquartered at 16 Rue Jules Verne, 44700 Orvault (Nantes), France, with SIRET 38458582400079 and share capital of €50,771.

Name

Celya

Legal name

Celya SA

Website

https://celya.fr

Company type

Private

Founded year

2006

Operating status

Operating

Headcount range

1–10 employees

Short description

Celya is a French Asterisk-specialist IT and telecom services firm delivering open-source VoIP IPBX, call center software, SIP trunking under its ARCEP-licensed Celyop brand, and managed hosting to B2B enterprises across France from offices in Nantes, Rennes, and Paris.

Ownership category

akta.pro rank

Product category

VoIP and Unified Communications Services

NAICS

Computer Systems Design and Related Services (5415), Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182), Custom Computer Programming Services (541511)

SIC

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

akta.pro primary industry

VoIP Access & ITSP Services (HDAIAHAD)

akta.pro secondary industries

Contact Center (CCaaS) & Customer Engagement Voice (HDAIAHAF), Numbering, DID, Porting & Carrier-of-Record Services (HDAIAHAK), AV/Collaboration & Unified Communications Support (VoIP, Video, UCaaS) (BPAAACAJ)

Keywords

• Asterisk VoIP integration
• Open-source IPBX
• SIP trunking services
• Call center software
• Telecom operator services

Headquarters

HQ city

Orvault

HQ country

France

HQ region

Europe

Offices6 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Infrastructure, Operations, Marketing or Sales, Supply Chain

Revenue model

1. Professional Services (Implementation & Consulting): System integration, deployment, and consulting services for Asterisk-based VoIP solutions. Includes project management, custom development, and technical advisory services. Revenue generated through project-based engagements and annual maintenance contracts.
2. Telecom Operator Services (Celyop): ARCEP-licensed telecom operator services under Celyop brand since 2009. Revenue from SIP trunking subscriptions, operator interconnect fees, and telecommunications connectivity (Fibre, SDSL, ADSL/VDSL). Test offer available at €25 HT/month for 2 SIP channels.
3. Hosting Services: Web hosting, voice hosting, and dedicated server hosting (managed or unmanaged) from Paris and Nantes data centers. Revenue from recurring hosting fees with geographic redundancy.
4. Call Center Software (SaaS): Hosted call center solution under PRO tier, available as SaaS with 24-hour deployment. Revenue from monthly subscriptions based on agent count and feature tier.
5. Recruitment Services: Placement/recruitment services for Linux system administrators and B2B sales professionals in telecommunications sector.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels3 records

Core offering

Celya designs, deploys, and operates Asterisk-based open-source VoIP telephony infrastructure for French enterprises, including IPBX/autocommutateur systems, three-tier call center platforms (Basic/Évolué/PRO), interactive voice servers (IVR/SVI), and ARCEP-licensed SIP trunking under the Celyop brand. The company complements these core telecom services with managed hosting across Nantes and Paris data centers, video conferencing (Mavisioconf/BigBlueButton), virtualization, mobile offerings, and Digium SELECT-certified Asterisk consulting, support, and custom development.

Product overview

Celya offers a unified telecommunications portfolio built on open-source software, centered on Asterisk-based IPBX and call center solutions. The core offering includes Asterisk IPBX Autocom (managing VoIP, ISDN, and analog lines), three-tier Call Center software (Basic/Évolué/PRO for 1-1000 agents), Interactive Voice Servers (IVR/SVI), and SIP trunking under the ARCEP-licensed Celyop brand. These integrate with video conferencing (BigBlueButton/Mavisioconf), virtualization/high-availability infrastructure (KVM, DRBD), and managed hosting across two data centers (Nantes/Paris). Add-on services include Asterisk support and DIGIUM-certified consulting. Celya also resells hardware including Yealink IP phones and AVer video conferencing equipment.

Differentiator

Problem solved

Functional benefit

Brands

• Asterisk Support: Dedicated site for Asterisk support services.
• Asterisk Conseil
• Asterisk Développements
• Mavisioconf

Products and services

• IPBX Autocom

Quantifiable outcome

• 31% cost reduction vs. competitor IP phones with equivalent features
• +3 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration10 records

Feature5 records

Partnerships

Four partnerships are on record, tiered core and major.

• DigiumcoreTechnology or IntegrationDigium is the creator and maintainer of Asterisk software. Celya holds the highest SELECT qualification partnership level with Digium, providing certified expert services for Asterisk deployments in France.
• Alliance LibrecoreStrategic or Co-development PartnerAlliance Libre is an open-source expertise pole. Celya is a member and actively contributes to the Asterisk community and open-source software development.
• IT-LogiqmajorChannel Partner/ Reseller/ DistributorIT-Logiq is an expert telecom distributor and the exclusive Yealink IP phone distributor in France. Partnered with Celya for STX France project deploying 2,500 Yealink phones.
• YealinkmajorTechnology or IntegrationYealink is a manufacturer of IP phones. Celya recommends and deploys Yealink phones (T22P, T28P models) for Asterisk-based solutions, noting 31% cost savings vs. competitors with equivalent features.

Scale indicators8 records

Recent moves4 records

Expansion highlights6 records

Broad incumbents

• Cisco (Webex): Global UCaaS/contact-center incumbent (Webex Calling, Webex Contact Center). Alternative for large French enterprises evaluating unified communications and CCaaS migrations away from on-prem PBX.
• RingCentral: Cloud-native UCaaS/CCaaS incumbent displacing on-prem PBX worldwide. Represents the principal cloud alternative Celya must compete against in mid-market French enterprise telephony and contact-center deals.
• Avaya: Legacy UC/PBX incumbent with large installed base in French enterprises. Celya frequently displaces Avaya/Aura systems on cost grounds, making Avaya the most direct incumbent competitor Celya attacks on PBX replacement deals.
• Alcatel-Lucent Enterprise: French-origin UC/PBX vendor (Rainbow, OXO Connect) with strong French enterprise footprint. Competes broadly with Celya for the same PME/ETI telecom modernization budgets in France.
• Genesys: Global CCaaS/engagement platform incumbent. Celya's call-center PRO tier overlaps with Genesys for enterprise contact-center buyers evaluating on-prem/cloud options, with Genesys as the broader incumbent alternative.

Direct peers

• Wazo: French open-source UCaaS platform built on Asterisk (community fork XIVO/Wazo). Operates in the same French market with the same open-source philosophy and similar SIP/IPBX scope as Celya's stack.
• 3CX: Asterisk-based IPBX/UC software vendor with global partner channel. Competes head-to-head with Celya for SMB and mid-market Asterisk-based telephony deployments, though distributed via partner-led SaaS rather than operator services.
• OpenIP: French operator and UC integrator selling hosted telephony, SIP trunking and contact-center solutions to French SMEs — same geography, customer profile (PME/ETI) and integrated operator/telephony model as Celya.
• Sangoma Technologies: Acquirer of Digium and steward of Asterisk, FreePBX and FreeSWITCH — the exact open-source stack Celya specializes in. Sangoma competes directly as a hardware, software, and cloud UC provider in the same technology category.

Others

• Yealink: IP phone hardware manufacturer and Celya's preferred device vendor (2,500 Yealink handsets deployed at STX France). Not a direct competitor but a tightly coupled ecosystem partner whose product roadmap influences Celya's deployment economics.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/celya_asterisk

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Celya