sipgate

What sipgate does

sipgate GmbH is a German private cloud-telephony provider founded in 1998 by Thilo Salmon and Tim Mois, headquartered in Düsseldorf. Its VoIP network went live in 2004, making it the first Voice over IP provider in Germany; today the platform serves more than 40,000 business customers and processes over 1 billion call minutes and 10 million calls per month. Infrastructure and servers are located entirely in Germany, with ISO 27001, GDPR, EU AI Act, and TKG certifications positioning the company for regulated German enterprise and public-sector procurement.

The product portfolio centers on a modular Cloud-Telefonanlage (Cloud PBX) with 150+ features, layered with AI-augmented add-ons including AI Agents for autonomous 24/7 customer service with live CRM/calendar access via MCP server integration, Conversation Intelligence for call summarization and topic extraction, an intelligent Contact Center, Visual Routing for drag-and-drop call flows, SIP Trunking for connecting existing PBXs, and mobile SIM/eSIM services. Supporting platforms include the sipgate App (Windows, macOS, Linux, browsers), sipgate.io REST and Push APIs with OAuth2, sipgate Flow for external AI/voice-bot integration, and a new sipgate satellite sub-brand for satellite connectivity. Voice and natural language processing capabilities are proprietary, trained on the company's substantial call traffic data, and exposed through 50+ native CRM, helpdesk, ERP, and identity-provider integrations.

sipgate generates revenue primarily through recurring subscriptions for cloud telephony, SIP trunking, mobile services, and AI add-ons, supplemented by usage-based fees for the sipgate.io Push API, professional services for enterprise rollouts, and a partner program offering up to 10% lifetime referral commissions. The company operates a dual go-to-market: direct enterprise field sales with dedicated account teams for complex multi-site deployments, and product-led self-service sign-up via a free 30-day trial for SMBs and startups. Geographic scope is DACH, with explicit references to multi-site and international enterprise deployments. Ownership remains with the two co-founders, and the company has not disclosed external funding, consistent with a self-funded, profitable operating profile.

Name

sipgate

Legal name

sipgate GmbH

Website

https://sipgate.de

Company type

Private

Founded year

1998

Operating status

Operating

Headcount range

101–250 employees

Short description

sipgate GmbH is a Düsseldorf-based private cloud telephony provider, the first VoIP operator in Germany since 2004, serving 40,000+ businesses with a modular Cloud PBX, AI Agents, Conversation Intelligence, SIP Trunking, and APIs hosted entirely on ISO-certified German infrastructure.

Ownership category

akta.pro rank

Product category

Cloud Business Telephony

NAICS

Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182)

SIC

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

akta.pro primary industry

Cloud PBX & Hosted Telephony (HDAIAHAB)

akta.pro secondary industries

SIP Trunking & Voice Termination (HDAIAHAC), VoIP Access & ITSP Services (HDAIAHAD), AI Integration & Orchestration Platforms (Connectors, Workflow, iPaaS for AI) (HDAEANAI)

Keywords

• Cloud telephony
• VoIP services
• AI voice agents
• SIP trunking
• Cloud contact center

Headquarters

HQ city

Düsseldorf

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. Cloud Telephone System Subscription: Monthly/annual subscription for cloud PBX, contact center, and AI agent services. Individual pricing packages tailored to customer requirements for enterprise accounts. Includes per-user/user seat pricing for business telephony.
2. SIP Trunking Services: SIP trunking with flexible voice channel scaling. Revenue based on channel capacity and usage.
3. sipgate.io Push API Usage: Push API (sipgate.io) is paid for long-term usage. REST API is free for sipgate customers. Revenue generated from event-driven API consumption beyond free tier.
4. Mobile Services: Mobile SIM/eSIM services with data packages, SMS, and VoLTE capabilities. Revenue from mobile subscriptions and data volume purchases.
5. Professional Services: Enterprise solution consulting, system integration, number porting assistance, and rollout support for large deployments.
6. Partner Program Commissions: Partners receive up to 10% lifetime commission for referring customers. Revenue shared with channel and referral partners.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels8 records

Core offering

sipgate operates a cloud-based VoIP business telephony platform headquartered in Germany, offering a complete Cloud PBX (Cloud-Telefonanlage) with fixed-line, mobile, and collaboration channels, plus 150+ features. The platform is modular and includes AI-powered add-ons such as AI Agents for automated 24/7 call handling, Conversation Intelligence for call summaries and insights, and a Contact Center with intelligent channel-based call distribution. sipgate also provides SIP Trunking, mobile SIM/eSIM services, developer APIs (REST and Push), and an integration platform (sipgate Flow) for connecting external AI agents.

Product overview

sipgate is a German VoIP telecommunications company offering a unified cloud telephony platform with modular components. The core product is the Cloud-Telefonanlage (Cloud PBX) providing business telephony with 150+ features. This core platform integrates with AI-powered add-ons including AI Agents for automated customer service, Conversation Intelligence for call insights, and Contact Center for intelligent call distribution. Supporting services include SIP Trunking, Visual Routing, mobile connectivity (Mobilfunk), and endpoint management. The platform includes a desktop/mobile App with softphone and webphone options, plus developer APIs (REST-API, Push-API/sipgate.io, and sipgate Flow for external AI integration). The portfolio targets businesses of all sizes from startups to enterprise.

Differentiator

Problem solved

Functional benefit

Brands

• sipgate.io: Developer API platform for SMS, Fax, Call Control, and CRM Integration.
• sipgate Flow (API)
• sipgate trunking
• sipgate satellite

Products and services

• sipgate Cloud-Telefonanlage Complete business telephony solution providing fixed-line, mobile, and collaboration features with 150+ functions including channels, conversation intelligence, visual routing, and team management. Targeted at German businesses of all sizes.
• sipgate AI Agents AI-powered virtual agents that handle standard customer inquiries around the clock, autonomously answering calls, triggering processes, and passing context to human agents. Agents book appointments directly during calls and access CRM and calendar systems in real time via MCP server integration.
• sipgate Conversation Intelligence AI-powered call analysis that automatically transforms every call into actionable insights including call summaries, topic extraction, conversation notes, and CRM data synchronization.
• sipgate SIP Trunking Connects VoIP-capable telephone systems to the public telephone network with HD voice quality, flexible scalability, and full SIP compliance including Opus codec. Servers hosted in Germany.
• sipgate Contact Center Intelligent channel-based call distribution with real-time monitoring, agent management, and comprehensive analytics and reporting for customer service teams.
• sipgate App Desktop and mobile application for business telephony available for Windows, macOS, Linux, and browsers; includes click-to-dial, call logging, and CRM integration.
• sipgate Mobilfunk Mobile connectivity service including SIM and eSIM options, VoLTE support, SMS functionality, and mobile data packages for business communications.
• sipgate Rufnummern (Phone Numbers) Phone number services including local, mobile, and international numbers with porting capabilities.
• sipgate REST-API Free REST API for developers to programmatically control telephony functions including initiating calls, sending SMS, sending faxes, querying balance, and managing voicemails. Authentication uses OAuth2 and Personal Access Tokens.
• sipgate.io Push-API Paid Push API where information is pushed when telephony events occur (e.g., incoming calls), enabling event-driven communications automation for developers and businesses.
• sipgate Flow Integration platform for connecting external AI agents or voice bots to sipgate accounts, enabling AI-powered workflow automation and telephony integration.
• sipgate satellite Mobile virtual network operator service for satellite connectivity, offered under the sipgate satellite sub-brand.
• sipgate Partnerprogramm Partner program offering up to 10% lifetime commission for IT consultants, telecom resellers, and system integrators who refer customers to sipgate.

Quantifiable outcome

• 1 billion+ minutes of calls handled annually
• +2 more outcomes

Named customers21 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration75 records

AI capability8 records

Feature8 records

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• 8x8: 8x8 is a global UCaaS and CCaaS provider offering cloud telephony, contact center, and conversation AI. It is a comparable competitor to sipgate in the broader cloud communications category, particularly for mid-market and enterprise customers.
• RingCentral: RingCentral is a global UCaaS/CCaaS platform offering cloud PBX, contact center, and AI-powered conversation intelligence. It competes with sipgate's Cloud-Telefonanlage, AI Agents, and Contact Center modules, particularly for German enterprises with international footprints.
• Microsoft Teams Phone: Microsoft Teams Phone bundles cloud telephony into the Microsoft 365 productivity suite, competing with sipgate at the enterprise level through bundling, Teams-native workflows, and integration with the broader Microsoft ecosystem.
• Mitel: Mitel is a global business communications provider offering on-premises and cloud PBX, contact center, and unified communications. It is comparable to sipgate in product scope (cloud and hybrid telephony) and competes in enterprise and mid-market segments globally.
• 1&1 Versatel / 1&1 (United Internet): 1&1 / 1&1 Versatel is a major German ISP and business telephony provider offering hosted PBX, SIP trunking, and mobile services to SMBs and enterprises. It overlaps with sipgate's SIP trunking and cloud PBX offerings as part of a broader connectivity portfolio.
• Zoom (Zoom Phone): Zoom Phone is a global cloud PBX offering from Zoom, integrated with Zoom Meetings and Zoom Contact Center. It competes with sipgate across SMB, mid-market, and enterprise segments with strong AI feature parity (Zoom AI Companion, Virtual Agent).
• Telekom Deutschland (Deutsche Telekom Business): Telekom Deutschland is the incumbent German fixed-line and mobile operator with a broad business telephony portfolio (DeutschlandLAN, MagentaBusiness). It competes with sipgate across enterprise and SMB segments but as part of a much wider telecom and connectivity portfolio.
• Vodafone Germany Business: Vodafone Germany offers OneNet Business, fixed-mobile convergence, and cloud telephony solutions to German enterprises. It competes with sipgate in enterprise telephony as part of a much broader fixed and mobile network portfolio.

Direct peers

• NFON AG: NFON is a Munich-headquartered cloud PBX provider serving SMBs and enterprises across Europe with a similar subscription-based UCaaS model. It is the closest direct competitor to sipgate in the German cloud telephony market, competing on similar feature sets (cloud PBX, contact center, integrations).
• Placetel: Placetel is a Cologne-based cloud telephone system provider (acquired by Telefónica / O2) targeting German SMBs and SMEs with a similar cloud PBX and SIP trunking product portfolio. Direct overlap with sipgate's KMU and SMB customer segments.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/sipgate
• GitHubgithub.com/sipgate
• YouTubeyoutube.com/@sipgate
• Facebookfacebook.com/sipgate
• LinkedInlinkedin.com/company/sipgate-gmbh
• Instagraminstagram.com/sipgate

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

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 sipgate