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Who is Pure IP?
Pure IP is a managed voice and telephony services provider that delivers SIP-based cloud calling, PSTN connectivity, and migration services for enterprise unified communications platforms.
- Global managed Session Initiation Protocol (SIP) trunking and carrier services for enterprise telephony
- Direct routing, calling plans, and PSTN enablement for cloud collaboration platforms (unified communications)
- Managed migration, assessment, and integration services for legacy PBX and UC environments
- Voice network monitoring, management, and support services (network operations)
- Regulatory-compliant numbering, emergency calling, and localization services across multiple countries
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More About Pure IP
Pure IP provides managed voice and telephony services to enterprises that run unified communications and collaboration platforms and need global PSTN connectivity based on SIP (Session Initiation Protocol) and IP networking. Its services are used by organizations that want to connect cloud collaboration platforms and existing PBX estates to public telephone networks without building and operating their own carrier infrastructure.
The company focuses on SIP trunking and carrier services (telephony/connectivity), offering inbound and outbound voice services over IP that can replace or complement legacy ISDN and TDM trunks. These services integrate with enterprise voice architectures that use SIP-based call control, including on-premises (on-prem) PBXs, session border controllers (SBCs), and cloud Unified Communications as a Service (UCAAS) platforms. Pure IP typically operates as the voice carrier and service provider, while customers retain control over their collaboration platforms and internal network.
Pure IP also provides services that enable direct routing and PSTN connectivity for cloud collaboration platforms (collaboration/UC), such as enterprise calling for Microsoft Teams or similar services, using SIP trunks and certified SBC architectures. In these deployments, the Pure IP network interconnects with customer SBCs or hosted SBC instances, which then connect to the collaboration environment using supported protocols and configuration models. This approach allows enterprises to standardize on a single telephony provider across multiple regions while using a cloud collaboration stack as the user interface for calling.
Alongside connectivity, Pure IP offers managed migration and professional services (professional services) that support enterprises moving from legacy PBX and on-prem UC platforms to cloud-based calling. This can include assessment of existing dial plans, numbering schemes, regulatory requirements, and site readiness, as well as phased cutover strategies where traditional PBX extensions and SIP-based cloud users coexist. The services are designed to fit into architectures that include SBCs, SIP trunks, and hybrid cloud/on-premises voice workloads.
Operationally, Pure IP provides monitoring, management, and support for its voice network and customer connections (network operations). This usually involves 24/7 Network Operations Center (NOC) oversight, call quality monitoring, and incident handling for PSTN connectivity. The company also addresses numbering and regulatory requirements (regulatory compliance), including local phone numbers, porting, emergency calling, and localization needs in multiple countries, which are common requirements in multinational enterprise deployments.
Within an enterprise IT and procurement directory, Pure IP fits into categories such as SIP trunking providers, cloud telephony and PSTN connectivity, unified communications enablement, and managed voice services. Its offerings are relevant to architects and infrastructure teams responsible for voice strategy, especially where organizations are consolidating carriers, standardizing on IP-based telephony, or enabling global calling for cloud collaboration platforms.
Our description of Pure IP. Updated February 2026.