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Who is Sirius Telecom?
Sirius Telecom is a telecommunications services provider focused on wholesale voice, messaging, and related carrier services for operators and enterprise communications platforms.
- Wholesale international and domestic voice termination services for carriers and Voice Over Internet Protocol (VoIP) providers (voice connectivity)
- SMS and A2P messaging delivery for enterprises, aggregators, and application providers (messaging)
- Interconnection, routing, and switching services supporting telecom operators and resellers (network interconnect)
- Support for IP-based communications, including Session Initiation Protocol (SIP) trunking and VoIP enablement for partners (IP voice)
- Service provisioning, monitoring, and support for telecom and communication service providers (operations support)
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More About Sirius Telecom
Sirius Telecom operates in the carrier and wholesale telecommunications market, providing voice and messaging services that connect telecom operators, VoIP providers, and enterprise communication platforms. Its offerings are positioned as underlying network and interconnect services that sit behind consumer-facing brands, enabling call completion, SMS delivery, and IP voice connectivity across multiple geographies and networks. Customers typically use Sirius Telecom for termination of international and domestic traffic, routing optimization, and as an intermediary for interconnection between disparate fixed, mobile, and IP-based networks.
The company’s voice services fall into the category of wholesale voice termination and transit (voice connectivity). These services generally rely on SIP (Session Initiation Protocol) for call setup and teardown, Real-time Transport Protocol (RTP) (Real-time Transport Protocol) for media transport, and standard telecom numbering and routing frameworks, including E.164 numbering plans and least cost routing (LCR) strategies. By aggregating routes from multiple carriers, Sirius Telecom can provide customers with coverage across many destinations while allowing them to manage quality and cost parameters through routing policies and traffic management tools.
In messaging, Sirius Telecom focuses on SMS and application-to-person (A2P) messaging (messaging). This use case supports enterprise applications such as one-time passwords, notifications, alerts, and marketing campaigns. Services in this category often integrate via Hypertext Transfer Protocol (HTTP) or Representational State Transfer (REST) APIs to customer applications, while relying on SS7 and SMPP (Short Message Peer-to-Peer) or equivalent protocols in the carrier domain for message delivery. By interfacing with multiple Mobile Network Operators (MNOs) and aggregators, Sirius Telecom provides customers with reach into various mobile networks without the need for direct connections to each operator.
From an architectural perspective, Sirius Telecom typically fits into multi-tenant communication stacks as a carrier partner that supplies SIP trunks, termination routes, and SMS connectivity to Unified Communications as a Service (UCAAS), CPaaS, call center platforms, and enterprise PBX environments. This positioning places the company in marketplace categories such as wholesale voice, carrier interconnect, and enterprise messaging enablement. Technical stakeholders evaluate such providers based on routing quality, monitoring and reporting capabilities, fraud controls, and resilience of network infrastructure, as well as interoperability with existing SBCs (Session Border Controllers), softswitches, and communication platforms.
In directories and procurement contexts, Sirius Telecom can be categorized under wholesale telecommunications services, including (voice connectivity), (messaging), and (network interconnect). Its offerings relate to other providers in the carrier and wholesale segment that supply the underlying routing, numbering, and signaling fabric for modern IP-based communications, but Sirius Telecom focuses on enabling partners and service providers rather than direct retail consumer services.
Our description of Sirius Telecom. Updated February 2026.