Show all 26 topics
- Internet
- Internet Protocol
- Managed Security Services
- Monitoring
- Network Operator
- Network Security
- on-premises
- Protection
- Quality of Service
- Remote Work
- Services
- Session Initiation Protocol
- Software-as-a-Service
- Software-Defined Wide Area Network
- Threats
- Unified Communications
- Unified Communications as a Service
- Visibility
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Who is Telesystem?
Telesystem is a business communications and managed network services provider that delivers voice, data, cloud, and security solutions for enterprises and distributed organizations.
- Cloud-based unified communications and hosted voice services for multi-site and remote work environments (unified communications-as-a-service).
- Managed internet, Software-Defined Wide Area Network (SD-WAN), and private networking services for connectivity across branch offices, data centers, and cloud endpoints (enterprise networking).
- Contact center, collaboration, and conferencing solutions for customer interaction and internal communications (collaboration and customer experience).
- Managed security offerings such as firewalls, Distributed Denial of Service (DDoS) mitigation, and related protections integrated with network services (network and security services).
- Lifecycle support including solution design, provisioning, monitoring, and ongoing account management for enterprise customers (managed services).
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More About Telesystem
Telesystem focuses on delivering business communications and network services that enterprises use to connect offices, remote workers, and cloud workloads over managed infrastructure.
The company’s portfolio centers on cloud voice and Unified Communications as a Service (UCAAS), which enterprises use to replace or augment on-premises (on-prem) PBXs and legacy telephony with IP-based calling, collaboration, and mobility features.
These services generally rely on Session Initiation Protocol (SIP) for call control, voice over IP (VoIP) transport, and integration with desk phones, softphones, and mobile clients, enabling extension dialing, call routing, voicemail, and presence across distributed locations.
On the data side, Telesystem offers enterprise networking services that span dedicated internet access, broadband aggregation, and software-defined wide area networking (SD-WAN) to connect branch sites, headquarters, and data centers to cloud applications.
SD-WAN deployments typically use overlay tunnels across multiple underlay circuits and apply centralized policy for traffic steering, Quality of Service (QoS), and failover, which enterprises adopt to support Software-as-a-Service (SaaS), UCAAS, and other latency-sensitive workloads.
Telesystem also provides Managed Security Services (MSS) tied closely to its connectivity offerings, including firewall services, intrusion and threat filtering, and DDoS protection at the network edge.
These services align with network security and secure connectivity categories, allowing organizations to offload configuration, monitoring, and event response of perimeter defenses while maintaining centralized visibility through managed portals or reporting.
In customer interaction and collaboration, Telesystem supports call center and contact center functions that route inbound calls to agents, apply call queuing and reporting, and integrate with unified communications endpoints.
These capabilities place Telesystem within enterprise UCAAS, contact center, managed network services, and managed security directories, where its offerings are used to consolidate telecommunications vendors, standardize connectivity across locations, and establish predictable service levels under a single provider contract.
From an architectural standpoint, enterprises typically integrate Telesystem services into hybrid IT environments, connecting corporate LANs, Wi‑Fi, and existing voice infrastructure to Telesystem’s cloud platforms via IP trunks, VPNs, or SD-WAN nodes, while relying on Telesystem’s network operations functions for monitoring and support.
Our description of Telesystem. Updated December 2025.
