List of Cisco VoIP Customers
Cisco Systems
170 West Tasman Drive,
San Jose, 95134-1706, CA,
United States
San Jose, 95134-1706, CA,
United States
1 408-526-4000
Professional Services
86200
$61.5B
Since 2010, our global team of researchers has been studying Cisco VoIP customers around the world, aggregating massive amounts of data points that form the basis of our forecast assumptions and perhaps the rise and fall of certain vendors and their products on a quarterly basis.
Each quarter our research team identifies companies that have purchased Cisco VoIP for PBX, VoiP and Phone Systems from public (Press Releases, Customer References, Testimonials, Case Studies and Success Stories) and proprietary sources, including the customer size, industry, location, implementation status, partner involvement, LOB Key Stakeholders and related IT decision-makers contact details.
Companies using Cisco VoIP for PBX, VoiP and Phone Systems include: NHS, a United Kingdom based Healthcare organisation with 1297455 employees and revenues of $200.00 billion, BP, a United Kingdom based Oil, Gas and Chemicals organisation with 100500 employees and revenues of $189.19 billion, Rio Tinto, a United Kingdom based Oil, Gas and Chemicals organisation with 60000 employees and revenues of $53.66 billion, GSK, a United Kingdom based Life Sciences organisation with 69310 employees and revenues of $42.21 billion, Jaguar Land Rover UK, a United Kingdom based Automotive organisation with 38379 employees and revenues of $35.61 billion and many others.
Contact us if you need a completed and verified list of companies using Cisco VoIP, including the breakdown by industry (21 Verticals), Geography (Region, Country, State, City), Company Size (Revenue, Employees, Asset) and related IT Decision Makers, Key Stakeholders, business and technology executives responsible for the software purchases.
The Cisco VoIP customer wins are being incorporated in our Enterprise Applications Buyer Insight and Technographics Customer Database which has over 100 data fields that detail company usage of software systems and their digital transformation initiatives. Apps Run The World wants to become your No. 1 technographic data source!
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| Logo | Customer | Industry | Empl. | Revenue | Country | Vendor | Application | Category | When | SI | Insight |
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A2Dominion Group | Non Profit | 1000 | $556M | United Kingdom | Cisco Systems | Cisco VoIP | PBX, VoiP and Phone Systems | 2015 | n/a |
In 2015, A2Dominion Group implemented Cisco VoIP to provide enterprise telephony across its organization. The deployment aligned to the PBX, VoiP and Phone Systems category and established Cisco VoIP as the primary voice platform for corporate communications and operational teams in the United Kingdom.
The implementation used standard PBX and VoIP functional capabilities including centralized call routing, voicemail, handset provisioning, softphone clients, and conferencing services. Architecturally the deployment was configured as a networked IP voice environment, leveraging IP endpoints on campus LANs, voice VLAN segmentation and QoS policies to prioritize voice traffic, and centralized telephony configuration and directory services for extension management.
Operational ownership sat with the IT infrastructure function, which implemented provisioning workflows, change control for telephony configurations, and capacity planning for concurrent calls. Cisco VoIP serviced corporate offices and field operations, impacting business functions such as facilities coordination, IT operations, and customer-facing communication channels, with the Infrastructure team maintaining governance over device onboarding, firmware updates, and call routing policies.
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ACCA (Association of Chartered Certified Accountants) | Non Profit | 1341 | $298M | United Kingdom | Cisco Systems | Cisco VoIP | PBX, VoiP and Phone Systems | 2017 | n/a |
In 2017, ACCA implemented Cisco VoIP as part of a Cisco integrated IP network and IP communications solution in the PBX, VoiP and Phone Systems category, to support membership and call centre operations for the organisation. The deployment targeted management of huge fluctuations in call centre traffic and reducing telephony costs by 10 percent every year while maintaining communications for approximately 350,000 members and students worldwide.
The architecture consolidated data and voice onto a single Cisco IP network hosted from ACCA's main administration, data centre and global call centre in Glasgow, with unified IP telephony endpoints, session management and real time network monitoring. Functional modules and capabilities implemented included IP telephony provisioning, call routing and distribution, unified network management and the Cisco IPCC Express contact centre module providing intelligent call distribution with overflow to second tier agents.
Integrations were executed across ACCA's network estate to centralise management and reporting, enabling real time visibility of voice and data traffic across single site and remote international offices and reducing inter office call costs by routing calls over the IP network. Operational coverage explicitly included membership services, the 50 strong call centre team, and administrative functions supporting 105,000 members and 245,000 students across 160 countries.
Governance and process changes removed multi vendor complexity by consolidating vendor contracts and centralising support processes, which simplified incident resolution and capacity planning. The implementation of Cisco VoIP delivered a component based platform for future voice and data initiatives, ensured consistent service levels to international offices and achieved the reported annual telephony cost reduction of 10 percent.
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Achievement First | Education | 2400 | $300M | United States | Cisco Systems | Cisco VoIP | PBX, VoiP and Phone Systems | 2017 | n/a |
In 2017 Achievement First configured Cisco VoIP as its core PBX, VoiP and Phone Systems deployment across all 24 Achievement First charter schools. The Cisco VoIP implementation focused on standardizing voice endpoint provisioning and handset configuration to unify telephony across site networks and central IT operations. Implementation activities included physical provisioning and configuration of Cisco VoIP devices, handset staging, and call routing configuration, while also supporting classroom AV and office peripherals such as projectors, printers, and HP workstations. Testing and procedural validation preceded site rollouts using Kaseya procedures, and device onboarding workflows were integrated with Active Directory for user account creation and permission assignment. Operational governance relied on Zendesk ticketing to manage and process support actions and requests, and IT staff monitored systems in operation to troubleshoot errors and maintain service across the 24 school sites. The Cisco VoIP deployment ran alongside wireless and endpoint initiatives involving Cisco access points and HP laptops, situating Cisco VoIP within staff communications, IT support workflows, and classroom technology operations.
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Acxiom UK | Professional Services | 100 | $15M | United Kingdom | Cisco Systems | Cisco VoIP | PBX, VoiP and Phone Systems | 2015 | n/a |
In 2015 Acxiom UK deployed Cisco VoIP as its core PBX, VoiP and Phone Systems implementation to centralize enterprise voice and unified communications management. The rollout leveraged on-premises Cisco platforms referenced in Cisco Collaboration System 10.x design guidance and Cisco unified UC560 manager VoIP systems to provide call control, device provisioning and gateway functions.
Configuration work focused on voice VLAN design and endpoint provisioning, creating DHCP scope and scope options for voice using Infoblox IP address management, and applying QoS classification and HSRP for gateway resilience. Network configuration included VLAN deployment, port-channel and VPC configurations on Nexus and ASR infrastructure to carry SIP and RTP media, and use of VDC and VRF segregation where required to isolate voice traffic.
Integrations tied Cisco VoIP into the broader network estate, with Infoblox handling IPv4 network and DHCP records for handsets, Cisco ASA firewalls enforcing voice security and DMZ controls, and ASR/MPLS cores transporting media with IPsec site to site backup tunnels for WAN resilience. Wireless voice support used Cisco wireless controllers and Aruba access points for campus Wi-Fi calling, while Riverbed WAN optimization and edge appliances such as F5 and Citrix NetScaler were part of the operating environment supporting application and network performance.
Operational governance emphasized centralized change control for VLAN and ACL requests, coordination of AAA systems for device authentication and authorization, and Visio-based network documentation for each site to support troubleshooting and audits. Support and ongoing configuration ownership remained with network design and implementation teams experienced in NX-OS, vPC and voice configurations to manage the PBX, VoiP and Phone Systems estate.
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Air Liquide Japan | Oil, Gas and Chemicals | 2000 | $500M | Japan | Cisco Systems | Cisco VoIP | PBX, VoiP and Phone Systems | 2009 | n/a |
In 2009 Air Liquide Japan implemented Cisco VoIP as a companywide communication platform, initiating installation and deployment of IP-PBX infrastructure to all branches in Japan. The project was part of a broader headquarters relocation effort through 2010, and the deployment of Cisco VoIP aligned with office consolidation and new workplace practices introduced during the move.
The implementation centered on CiscoUC IP-PBX technology and Cisco IP-Phones, with functional capabilities covering unified communications, video conference support, and domestic PBX control. Cisco VoIP was configured to support voice switching and call control, handset provisioning, and conferencing functionality consistent with PBX, VoiP and Phone Systems deployments.
Architecturally the Cisco VoIP rollout was integrated into the existing Windows domain and Cisco network fabric, leveraging Cisco routers and switches across WAN and LAN links, and interoperating with firewall infrastructure including Fortigate and Cisco devices. Server side services used Windows Server components for DHCP and DNS, and the environment operated alongside Zscaler proxy for network traffic control, with design, setup, and troubleshooting tasks performed by the IT core systems team.
Governance and operational change were driven by IT management who proposed new ways of working and operational improvements, executing a phased rollout across branches and central sites. The deployment is documented as provoking more active and easier communications among employees, and the headquarters project that contained the Cisco VoIP rollout received the Kanto New Office Incentive Award at the 24th Nikkei New Office Prize Competition.
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Insurance | 80 | $117M | United Kingdom | Cisco Systems | Cisco VoIP | PBX, VoiP and Phone Systems | 2021 | n/a |
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Professional Services | 328 | $198M | United Kingdom | Cisco Systems | Cisco VoIP | PBX, VoiP and Phone Systems | 2014 | n/a |
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Healthcare | 360 | $50M | United States | Cisco Systems | Cisco VoIP | PBX, VoiP and Phone Systems | 2021 | n/a |
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Leisure and Hospitality | 10000 | $13.0B | United Kingdom | Cisco Systems | Cisco VoIP | PBX, VoiP and Phone Systems | 2013 | n/a |
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Government | 9882 | $2.5B | United Kingdom | Cisco Systems | Cisco VoIP | PBX, VoiP and Phone Systems | 2016 | n/a |
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Buyer Intent: Companies Evaluating Cisco VoIP
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| Logo | Company | Industry | Employees | Revenue | Country | Evaluated | ||
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FAQ - APPS RUN THE WORLD Cisco VoIP Coverage
Cisco VoIP is a PBX, VoiP and Phone Systems solution from Cisco Systems.
Companies worldwide use Cisco VoIP, from small firms to large enterprises across 21+ industries.
Organizations such as NHS, BP, Rio Tinto, GSK and Jaguar Land Rover UK are recorded users of
Cisco VoIP for PBX, VoiP and Phone Systems.
Companies using Cisco VoIP are most concentrated in Healthcare, Oil, Gas and Chemicals and Life Sciences, with adoption spanning over 21 industries.
Companies using Cisco VoIP are most concentrated in United Kingdom, with adoption tracked across 195 countries worldwide. This global distribution highlights the popularity of Cisco VoIP across Americas, EMEA, and APAC.
Companies using Cisco VoIP range from small businesses with 0-100 employees - 3.8%, to mid-sized firms with 101-1,000 employees - 17.72%, large organizations with 1,001-10,000 employees - 50.63%, and global enterprises with 10,000+ employees - 27.85%.
Customers of Cisco VoIP include firms across all revenue levels — from $0-100M, to $101M-$1B, $1B-$10B, and $10B+ global corporations.
Contact APPS RUN THE WORLD to access the full verified Cisco VoIP customer database with detailed Firmographics such as industry, geography, revenue, and employee breakdowns as well as key decision makers in charge of PBX, VoiP and Phone Systems.