OneStream Networks
CallTower is a private Advanced Cloud Communications provider delivering multi-vendor UCaaS, CCaaS, and AI-powered CX solutions to enterprise customers across Microsoft Teams, Cisco Webex, Zoom, Genesys, and Five9, supported by a global voice footprint spanning 80+ countries.
- Company typePrivate
- Founded2004
- HeadquartersRochester, United States
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What OneStream Networks does
CallTower, Inc. (legal name CallTower, Inc.; headquartered at 10701 River Front Parkway, 4th Floor, South Jordan, Utah) is a private US-based Advanced Cloud Communications provider focused exclusively on enterprise customers with complex, multi-platform communications environments. Its functional core is multi-vendor UCaaS, CCaaS, and AI-powered CX delivery across Microsoft Teams, Cisco Webex, Zoom, Genesys Cloud, and Five9, with a proprietary administrative layer (CallTower Connect) and a global voice infrastructure spanning 80+ countries and 15 geo-redundant data centers.
The product stack is organized in three layers. First, core UCaaS offerings include Microsoft Teams Calling (Operator Connect, Direct Routing, GCC High Teams Direct Routing), Webex Calling (including Webex Dedicated Instance), Zoom Calling and Zoom Phone, plus global enterprise voice and CT SIP trunking. Second, the CCaaS layer aggregates Five9, Genesys Cloud, Webex Contact Center, Zoom Contact Center, CT Contact Center, and Ascend Teams Contact Center. Third, add-on modules span CRM integration (CT Cloud Unite), compliance recording (CT Recording), analytics (CT Analytics, CallTower Analytics for Webex), messaging (CT Text), fax (CT Cloud Fax), safety/reliability (Dynamic E911, One Click Failover, Voice Spam Blocking via Mutare), and AI capabilities (CallTower AI, Conversational AI). All offerings are supported by a 24/7/365 managed services operation staffed by communications engineers and CX specialists and by a professional services practice covering CX consulting, implementation, migration, training, and AI enablement.
Revenue is generated primarily through subscription-based recurring contracts (per-user licensing across UCaaS and CCaaS) with annual billing cadence and quote-based pricing — no public price book or self-service e-commerce is offered. Revenue is complemented by non-recurring professional services and ongoing managed services revenue. The go-to-market combines direct enterprise field sales (targeting IT leaders and CX decision-makers) with a three-tier channel program (Partner Program, Agency Program, MSP Program with the GTx self-service platform). Customer concentration sits across healthcare, financial services, education, government, manufacturing, and retail/hospitality, with named customer references anonymized but consistently enterprise-tier. The company is independently private with no disclosed funding rounds, parent company, or acquisition activity in the source data.
OneStream Networks firmographics
Firmographics- Name
- OneStream Networks
- Legal name
- CallTower, Inc.
- Website
- https://onestreamnetworks.com
- Company type
- Private
- Founded year
- 2004
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- CallTower is a private Advanced Cloud Communications provider delivering multi-vendor UCaaS, CCaaS, and AI-powered CX solutions to enterprise customers across Microsoft Teams, Cisco Webex, Zoom, Genesys, and Five9, supported by a global voice footprint spanning 80+ countries.
- Ownership category
- akta.pro rank
Where OneStream Networks is headquartered
LocationHeadquarters
- HQ city
- Rochester
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
OneStream Networks business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Infrastructure, Personnel, Technology or R&D, Marketing or Sales, Operations
Revenue model
- UCaaS Subscriptions: Recurring subscription revenue from unified communications services including Microsoft Teams Calling, Webex Calling, and Zoom Phone. Revenue is generated through per-user licensing with various feature tiers.
- Contact Center (CCaaS): Subscription and licensing revenue from contact center solutions including Genesys Cloud, Five9, Zoom Contact Center, and Webex Contact Center platforms.
- Global Voice Services: Enterprise voice connectivity services enabling calling across 80+ countries with geo-redundant infrastructure. May include per-minute or subscription-based pricing.
- Professional Services: CX consulting, implementation, migration, integration, training, and change management services. Includes strategy, AI transformation, and ongoing optimization engagements.
- Managed Services: Ongoing monitoring, optimization, and operational support services for communications and contact center environments.
- AI-Powered CX Solutions: AI automation, analytics, intelligent routing, and omnichannel engagement solutions including Virtual Agents, Agent Assist, and conversational AI.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Annual | Enterprise communications and contact center solutions with customized pricing |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels8 records
OneStream Networks product offering
Product offeringCore offering
OneStream Networks sells enterprise cloud communications services spanning Unified Communications as a Service (UCaaS) and Contact Center as a Service (CCaaS), delivered across multi-vendor platforms including Microsoft Teams, Cisco Webex, Zoom, Genesys, and Five9. The portfolio bundles global enterprise voice (80+ countries, 15 geo-redundant data centers), AI-powered customer experience solutions (Virtual Agents, Agent Assist, agentic AI), and managed support (24/7/365 expert engineering and CX specialists). OneStream Networks, doing business as CallTower, acts as the integrator of record, providing CX consulting, implementation, migration, integration, training, and ongoing managed services around the third-party communications platforms.
Product overview
CallTower is an Advanced Cloud Communications provider offering a comprehensive unified communications platform that integrates multiple UCaaS, CCaaS, and AI-powered CX solutions. The portfolio centers on UCaaS Solutions as the core offering, supported by multi-platform integrations with Microsoft Teams, Webex by Cisco, and Zoom. The CCaaS layer includes solutions from Five9, Genesys Cloud, Webex Contact Center, CT Contact Center, Zoom Contact Center, and Ascend Teams Contact Center. Add-on modules span collaboration tools (CT Cloud Unite, CT Recording, CT Analytics), messaging (CT Text), faxing (CT Cloud Fax), voice (CT SIP, Dynamic E911), device management (Phonism, MS Teams Mobile Dialer, Webex Go), and AI-powered capabilities (CallTower AI, Conversational AI). The ecosystem is managed through CallTower Connect, a proprietary administration portal, and supported by professional services including consulting, implementation, training, and 24/7/365 support.
Differentiator
Problem solved
Functional benefit
Brands
- CallTower Connect: Proprietary customer administration portal providing centralized visibility and control across users, provisioning, analytics, and communication management workflows for enterprise communications environments.
- CT Cloud
- CT Contact Center
- CT SIP
- CT Fax
- CT Unite
- CT Analytics
- CT Text
Products and services
- UCaaS Solutions Unified Communications as a Service bundle providing voice, contact center productivity, and network support for enterprise organizations.
- Microsoft Teams Solutions Enterprise calling, collaboration, and customer engagement on Microsoft Teams including Operator Connect, GCC High Teams Direct Routing, Direct Routing, and Microsoft 365/Copilot/Premium integrations.
- Webex Calling Cloud-based enterprise calling and collaboration solution delivered on the Cisco Webex platform.
- Zoom Calling Enterprise calling solution powered by the Zoom platform.
- Zoom Phone Cloud phone system from Zoom for business voice communications.
- Global Enterprise Voice Solutions Global voice enablement delivering enterprise calling across 80+ countries with geo-redundant infrastructure and 15 data centers.
- CX / CCaaS Solutions Customer Experience and Contact Center as a Service solutions for enterprise customer engagement, integrating Five9, Genesys Cloud, Webex Contact Center, Zoom Contact Center, CT Contact Center, and Ascend Teams Contact Center.
- CT Cloud OneStream Networks' cloud communications platform offering voice and collaboration services.
- CallTower Connect Proprietary customer administration portal providing centralized visibility and control across users, provisioning, analytics, and communication management workflows.
- CallTower AI AI-powered customer experience suite including Virtual Agents, Agent Assist, and agentic AI for automation and customer engagement.
- Conversational AI AI-powered conversational solutions for customer interactions in the contact center.
- Solutions Center Comprehensive resource hub with documentation, expert guidance, and industry resources for business communication needs.
- Contact Center Professional Services Strategic CX consulting, contact center migration, workflow optimization, integrations, and AI enablement services.
- Consulting Services CX strategy, platform selection, and architecture consulting aligned to enterprise business goals.
- Contact Center Support Services Ongoing operational support for contact center environments.
- Managed Services and 24/7 Support 24/7/365 expert support delivered by experienced communications engineers and CX specialists with documented escalation paths for support, implementation, sales, billing, and client success.
- Partner Program Channel partner program offering financial rewards, excellent support, and partner enablement resources.
- Agency Program Agency partner program offering revenue streams, scalable growth, and extensive support to agency partners.
- MSP Program Managed Service Provider program empowering service providers by simplifying taxation and enhancing efficiency through tools including the GTx self-service platform.
- Partner Portal Self-service portal for channel partners to manage relationships, deals, and enablement.
Quantifiable outcome
- Seamless transition from legacy telephony to cloud-based platforms reported by enterprise customers
- +2 more outcomes
Companies that use OneStream Networks
Customer profileNamed customers4 records
Segments7 records
Ideal customer profiles1 record
OneStream Networks technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration22 records
AI capability7 records
Feature10 records
OneStream Networks partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered core.
- MicrosoftcoreCertified Microsoft solutions partner offering Microsoft Teams Calling, Operator Connect, GCC High Teams Direct Routing, Direct Routing, Microsoft 365, Microsoft Copilot, MS Teams Premium, Teams Mobile eSim, and Dynamics 365 integrations. Deep technical certifications and deployment expertise for enterprise Microsoft environments.
- Cisco (Webex)coreCisco collaboration partner offering Webex Calling, Webex Dedicated Instance, Webex Contact Center, Webex Go eSim, and Webex Analytics. Provides enterprise Webex deployment and management services.
- ZoomcoreZoom partner offering Zoom Calling, Zoom Phone, and Zoom Contact Center solutions. Enables enterprise Zoom deployment and integration services.
- GenesyscoreGenesys Cloud partner providing contact center solutions, AI-powered customer experience, and CX platform deployment. Certified implementation and consulting services for Genesys environments.
- Five9coreFive9 contact center partner offering cloud contact center solutions with AI capabilities, intelligent routing, and workforce optimization integrations.
Scale indicators3 records
Recent moves6 records
Expansion highlights6 records
OneStream Networks competitors and assessment
Company assessmentDirect peers
- IntelePeer: Communications platform-as-a-service provider offering UCaaS, SIP trunking, and AI-powered CX. Closely comparable to CallTower in the multi-vendor enterprise communications aggregator positioning.
- RingCentral: Public UCaaS/CCaaS leader offering RingCentral MVP, Contact Center, and AI capabilities. Directly competes with CallTower for enterprise unified communications deals, but takes a single-vendor rather than multi-vendor approach.
- Vonage (now part of Ericsson): UCaaS and communications APIs provider; Vonage Business offers cloud communications comparable to CallTower's UCaaS portfolio, including SIP trunking, hosted telephony, and contact center.
- 8x8: Public UCaaS/CCaaS provider with integrated voice, contact center, and CX platform. Competes head-to-head with CallTower in enterprise segments and similarly emphasizes global voice coverage and AI-powered analytics.
- Mitel: UCaaS/CCaaS vendor focused on enterprise and mid-market cloud communications. Comparable to CallTower for enterprise voice and contact center deployments, particularly for customers transitioning from on-premises PBX.
Broad incumbents
- Microsoft (Teams Phone): Owns Microsoft Teams and Teams Phone as native calling. While CallTower is a certified partner, Microsoft competes directly via Operator Connect, Direct Routing, and bundled calling plans for the same enterprise buyers.
- Zoom: Operator of Zoom Phone, Zoom Contact Center, and Zoom AI Companion. Competes with CallTower in the enterprise calling and CCaaS space despite being a partner platform.
- Cisco (Webex): Provides Webex Calling, Webex Contact Center, and Webex Dedicated Instance. Although CallTower is a Cisco collaboration partner, Cisco's direct enterprise sales motion competes for the same UCaaS/CCaaS wallet.
Emerging players
- Genesys: Cloud and on-premises contact center platform with deep CX and AI capabilities. Resold by CallTower but competes for the same enterprise CX transformation deals.
- Five9: Pure-play cloud CCaaS provider. While CallTower resells Five9, Five9's direct sales motion and AI/automation capabilities overlap with CallTower AI and CT Contact Center offerings.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Customer concentration
OneStream Networks social profiles
Digital presenceOneStream Networks compliance and trust
Trust signalCompliance1 record
OneStream Networks financial estimates
Financial estimateRevenue estimate
Valuation estimate
OneStream Networks leadership team
Management profileNumber of profiles
OneStream Networks funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
OneStream Networks M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about OneStream Networks
What does OneStream Networks do?
OneStream Networks sells enterprise cloud communications services spanning Unified Communications as a Service (UCaaS) and Contact Center as a Service (CCaaS), delivered across multi-vendor platforms including Microsoft Teams, Cisco Webex, Zoom, Genesys, and Five9. The portfolio bundles global enterprise voice (80+ countries, 15 geo-redundant data centers), AI-powered customer experience solutions (Virtual Agents, Agent Assist, agentic AI), and managed support (24/7/365 expert engineering and CX specialists). OneStream Networks, doing business as CallTower, acts as the integrator of record, providing CX consulting, implementation, migration, integration, training, and ongoing managed services around the third-party communications platforms.
Is OneStream Networks a public or private company?
OneStream Networks is a private company. It is classified as unknown and is currently operating.
When was OneStream Networks founded?
OneStream Networks was founded in 2004. It employs 11 to 50 people.
Where is OneStream Networks based?
OneStream Networks is headquartered in Rochester, United States, in the North America region.
How does OneStream Networks make money?
Six revenue lines are on record. UCaaS Subscriptions are the primary driver. The others are contact Center (CCaaS), global Voice Services, professional Services, managed Services and AI-Powered CX Solutions.
Who are OneStream Networks's main competitors?
Direct peers on record are IntelePeer, RingCentral, Vonage (now part of Ericsson), 8x8 and Mitel. Broad incumbents are Microsoft (Teams Phone), Zoom and Cisco (Webex). Emerging players are Genesys and Five9.
Does OneStream Networks have an API?
No public API is recorded for OneStream Networks.