Company lists · Data refreshed September 2026
Top 25 Ip phone system providers based in Germany
RevenueBase identified 63 ip phone system providers headquartered in Germany as of September 2026 and tracks 352 professional contacts across them, including 147 with verified work emails. Berlin is the largest hub.
This list covers ip phone system providers headquartered in Germany, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest ip phone system providers based in Germany
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 96 contacts → | ||||
Partial evidence “innovaphone has been playing a decisive role in driving the development of IP telephony and digital transformation for more than 25 years now and is a leading European provider of…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 24 contacts → | ||||
Indirect evidence “Cloud- und On-Premise-Lösungen - Technologie verwandelt Die toplink-Gruppe etwas genauer betrachtet: toplink GmbH - die Cloud Company Bereits 2005 vermarktet die toplink GmbH die…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 13 contacts → | ||||
Partial evidence “o-byte.com ist ein mittelständisches ITK-Systemhaus aus der Fahrradstadt Münster mit Standorten in Köln und Lüdenscheid.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 12 contacts → | ||||
Partial evidence “Telekommunikationslösungen - IT-Dienstleistungen - Hard- und Software - Beratung und Verkauf Wir bieten eine langjährige Erfahrung in den folgenden Bereichen an: IT - Systeme…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 11 contacts → | ||||
Partial evidence “We at IANT are an integrator for VoIP/UC telephone systems, specialized in Open Standards technologies.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 9 contacts → | ||||
Indirect evidence “Ob kleines Büro oder Mittelstand Unternehmen jeder Größe profitieren von unseren innovativen Kommunikationslösungen, die den unterschiedlichen Anforderungen optimal angepasst und…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 8 contacts → | ||||
Partial evidence “Beratung, Planung & Realisierung von ITK Systemen Hard- & Softwarelösungen Installation und Wartung von Telefonanlagen, Software- und UC-Lösungen Seit über 25 Jahren ist die DEK…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 8 contacts → | ||||
Indirect evidence “Die fonial GmbH, ein Tochterunternehmen der EnBW, wurde 2014 in Köln als Anbieter einer virtuellen Telefonanlage gegründet.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 8 contacts → | ||||
Indirect evidence “Seit über fünf Jahren ist die amatrix IT Services GmbH Ihr verlässlicher Partner für maßgeschneiderte IT- und TK-Lösungen.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 7 contacts → | ||||
Indirect evidence “Die Bedürfnisse unserer Kunden bei der Kommunikation haben wir immer im Blick.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 7 contacts → | ||||
Indirect evidence “Die im Jahr 2007 gegründete Deutsche Telefon mit Sitz in Mainz ist Spezialist für professionelle SIP Kommunikation und einer der führenden Anbieter von Netz-Tk-Anlagen.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 6 contacts → | ||||
Indirect evidence “LocaNet, founded in 1996 and based in Dortmund, Germany, provides a wide range of VoIP based IT products and services.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 5 contacts → | ||||
Indirect evidence “Devenia Communications is a management consulting company based out of Bürgermeister-Wegele-Str.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 5 contacts → | ||||
Indirect evidence “Full-Service-IT- und Telekommunikationsanbieter für PBX-Systeme Die moderne Homeoffice-Plattform MOHAVE, unsere Cloud-TK-Anlage re:fon, die Benutzermanagementsoftware IROM…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 5 contacts → | ||||
Indirect evidence “Telefonie soll Unternehmen und Kunden dienen – und nicht umgekehrt.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 5 contacts → | ||||
Indirect evidence “Bechler Kommunikationstechnik GmbH – Ihre Experten für moderne Kommunikationslösungen Wir sind Spezialisten für zukunftssichere Kommunikationstechnik und bieten Unternehmen…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 5 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 4 contacts → | ||||
Indirect evidence “Seit 1998 liefert die #MEHRENS Ihnen als zuverlässiger Partner innovative Kommunikationslösungen.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 3 contacts → | ||||
Indirect evidence “INTERPORT REAL GmbH, gegründet in 2002, ist ein inhabergeführtes Unternehmen mit Stammsitz in Grasbrunn bei München und Standorten in Berlin, Leipzig und Frankfurt.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 3 contacts → | ||||
Indirect evidence “Vodia Networks Inc.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 contacts → | ||||
Indirect evidence “Moin.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2 contacts → | ||||
Partial evidence “Telefux: Your partner for telephone systems and Internet Telefux GmbH is an experienced service provider for telephone systems and telecommunications from Diedorf near Augsburg.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Indirect evidence “Sie suchen nach einer passenden Telefonanlage oder möchten Ihre jetzige verändern?” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: ip phone system providers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names ip phone system providers.
- Partial evidence
- Its own public description names part of ip phone system providers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name ip phone system providers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 63 ip phone system providers based in Germany
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Ip phone system providers based in Germany at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 63 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among ip phone system providers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Germany whose own description of what they do matches “ip phone system providers”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names ip phone system providers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among ip phone system providers, and records with no verified work email. Companies headquartered outside Germany are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 147 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names ip phone system providers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many ip phone system providers are there based in Germany?
RevenueBase identified 63 ip phone system providers headquartered in Germany as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Innovaphone, headquartered in Sindelfingen, tops this list with the largest team on record.
Which city has the most ip phone system providers?
Berlin leads with 7 headquartered companies, followed by Hamburg (3) and Koln (2).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 147 verified decision-maker contacts tracked across these 63 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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