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Buyer’s Guide: Company Profile

Sansay

Explore Sansay’s services, potential fit for different businesses, how it compares with alternatives, and what to ask before choosing a provider.

Buyer’s Guide visibility

Sansay ranked #4

The search

Buyer
Communications service providers and wholesale operators evaluating carrier-grade session border control software for high-volume SIP peering, security, and routing
Region
Global

Sep 29, 2026 · 10 entries returned

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This page records how AI systems present this company to buyers: what they pick up and where their picture may be incomplete or mistaken. Community notes are reader submissions, separate from the AI results.

Question 1

What does Sansay do?

Sansay, Inc. is a telecommunications software infrastructure vendor headquartered in San Diego, California. Founded in 2002, Sansay develops carrier-grade session border controllers (SBCs), media handling engines, and centralized routing platforms for communications service providers. Operating at the core and peering edges of the VoIP protocol stack, its systems govern signaling interworking, NAT traversal, topology hiding, and DDoS prevention across SIP and WebRTC sessions. Rather than functioning as a carrier, aggregator, or hosted PBX provider, Sansay sells deployable software licenses running on bare metal, virtualized environments, and cloud infrastructure. Service providers, wholesale carriers, and cable MSOs use Sansay's platforms to solve complex call routing, high-volume call switching, and network interoperability challenges.

Sources: [1] [17] [20]

Question 2

What products, services and core capabilities does Sansay offer?

Sansay’s core product family centers on its Session Border Controller lineup, led by the VSXi software SBC and the vmVSXi virtualized/cloud SBC. These controllers manage high-throughput SIP session routing, carrier peering, access demarcation, NAT traversal, and DDoS mitigation for carrier wholesale and retail services. The WebSBC expands this control layer to WebRTC endpoints, bridging browser-based media sessions directly into SIP infrastructures using standard JSEP signaling. For session intelligence and media processing, Sansay provides ROME (Routing, Optimization, Management, and Economics) and MST (Media Switching and Transcoding). ROME delivers centralized least-cost routing (LCR), local number portability (LNP) dips, fraud mitigation, and high-rate number lookups across network nodes. MST handles real-time voice transcoding, DTMF conversion, and media transformation. Sansay platforms deploy as software on commercial off-the-shelf (COTS) x86 hardware, private hypervisors, and public cloud environments. They integrate into carrier ecosystems via SIP, SOAP/XML APIs, and standard billing/CDR interfaces, featuring a network licensing model that shares concurrent call capacity dynamically across server nodes.

Sources: [5] [17] [21] [22]

Question 3

What types of organizations are a good fit for Sansay?

Sansay is best suited for telecommunications service providers, competitive local exchange carriers (CLECs), wholesale voice aggregators, and large retail VoIP providers needing high-capacity session switching. Organizations that handle dense concurrent call volumes, maintain extensive carrier-to-carrier peering interconnections, or run real-time least-cost routing tables benefit most from Sansay’s architecture. It also fits hosted unified communications and contact center operators seeking granular control over SIP signaling manipulation and STIR/SHAKEN handling. Fit weakens significantly for small enterprises or companies lacking in-house telecom engineering capabilities. Organizations wanting an all-in-one turnkey hosted PBX, a managed enterprise UCaaS suite, or physical plug-and-play micro-appliances will find Sansay overly carrier-focused and operationally demanding.

Sources: [2] [17] [20]

Question 4

Who are Sansay's main competitors and alternatives?

Sansay's primary competitors are carrier-grade and enterprise Session Border Controller vendors serving telecommunications operators, cloud communications providers, and large multi-site enterprises. Ribbon Communications (official_url: https://ribboncommunications.com/) competes directly across carrier and cloud interconnects with its SBC Core and Edge solutions. Oracle Corporation (official_url: https://www.oracle.com/) competes via its Oracle Communications Session Border Controller (formerly Acme Packet) product line. AudioCodes (official_url: https://www.audiocodes.com/) offers software and appliance Mediant SBCs spanning service provider peering and Microsoft Teams enterprise access. Cisco Systems (official_url: https://www.cisco.com/) delivers session border capabilities via Cisco Unified Border Element (CUBE). REVE Systems (official_url: https://www.revesoft.com/) delivers carrier-grade software SBCs targeting wholesale and retail telecom operators. Additional vendors active in the SBC market include Sangoma Technologies and Nokia Corporation.

Sources: [7] [8] [9] [10] [11] [12] [13] [17] [18] [19]

What the AI said and what we found

What the AI said

Sansay’s primary competitors are carrier-grade and enterprise Session Border Controller vendors serving telecommunications operators, cloud communications providers, and large multi-site enterprises. Ribbon Communications (official_url: https://ribboncommunications.com/) competes directly across carrier and cloud interconnects with its SBC Core and Edge solutions. Oracle Corporation (official_url: https://www.oracle.com/) competes via its Oracle Communications Enterprise and Carrier Session Border Controller (formerly Acme Packet) product line. AudioCodes (official_url: https://www.audiocodes.com/) offers software and appliance Mediant SBCs spanning service provider peering and Microsoft Teams enterprise access. Cisco Systems (official_url: https://www.cisco.com/) delivers session border capabilities via Cisco Unified Border Element (CUBE). REVE Systems (official_url: https://www.revesoft.com/) delivers carrier-grade software SBCs targeting wholesale and retail telecom operators.

What we found when we checked

Some points were supported, while others needed more context or changes.

  • Ribbon Communications competes directly across carrier and cloud interconnects with its SBC portfolio including Core, Edge, and Cloud SBCs.
  • Oracle competes via its Oracle Communications Session Border Controller (formerly Acme Packet) product line for service provider and enterprise networks.
  • AudioCodes offers Mediant SBCs in hardware, virtualized, and cloud versions for service providers and enterprises including Microsoft Teams Direct Routing.
  • Cisco Unified Border Element (CUBE) provides session border capabilities running on Cisco IOS/IOS XE hardware platforms.
  • REVE Systems delivers carrier-grade software session border controllers targeting wholesale and retail telecom operators.
  • Sansay's VSXi is used by more than 400 network operators worldwide and supports wholesale, retail, hosted business voice, SIP trunking, and prepaid applications.
  • Additional SBC market vendors include Sangoma Technologies and Nokia Corporation.

What we changed

We kept supported details and removed or qualified points that the independent check could not confirm.

Sources we used

Question 5

How does Sansay compare with its key alternatives?

Sansay competes against legacy telecom giants and specialized SBC vendors by offering a high-performance, software-based architecture deployable on standard commercial off-the-shelf servers, virtual machines, and cloud platforms, with flexible network-wide session pooling via its Network License Zones feature. While incumbents such as Oracle and Ribbon maintain broad telecom portfolios spanning packet-optical networking and large IMS core systems, Sansay focuses on software session control, routing economics, and media normalization for communications service providers. Against AudioCodes and Cisco, which dominate enterprise edge demarcation and direct UCaaS integrations, Sansay stands out in high-throughput wholesale clearing, least-cost routing, and carrier-to-carrier peering. Sansay is not limited to bare-metal deployments: the vmVSXi runs on KVM, VMware, AWS, Google Cloud, IBM, and bare metal, and a purpose-built AWS AMI is also available. Buyers should confirm whether specific enterprise routing suites or turnkey branch appliance support is available for their use case. Overall positioning Sansay is positioned as an agile, high-performance software SBC and routing intelligence specialist for carriers and VoIP providers. Key differentiators Specialized high-capacity software architecture, dynamic network licensing across distributed nodes, integrated least-cost routing (ROME), and vendor-neutral SIP manipulation. Tier-1 Telecom Equipment and SBC Providers Overlap: Carrier-grade session border controllers, SIP peering, signaling interworking, and telecommunications security. Important differences: Ribbon and Oracle offer extensive telecommunications portfolios including optical networking, packet transport, and large-scale IMS cores, whereas Sansay focuses primarily on SBC software and session routing intelligence. Enterprise Demarcation and Mixed Appliance Vendors Overlap: SIP trunk demarcation, Microsoft Teams voice routing, and enterprise edge security. Important differences: AudioCodes and Cisco offer packaged hardware appliances, voice gateways, and native enterprise UC routing ecosystems, whereas Sansay is software-driven and oriented toward high-density wholesale and carrier networks.

Sources: [7] [10] [11] [12] [13] [14] [15] [16]

What the AI said and what we found

What the AI said

Sansay competes against legacy telecom giants and specialized SBC vendors by offering a high-performance, purely software-based architecture with flexible network-wide session pooling. While incumbents such as Oracle and Ribbon maintain broad telecom portfolios spanning packet-optical networking and large IMS core systems, Sansay focuses squarely on software session control, routing economics, and media normalization. Against AudioCodes and Cisco, which dominate enterprise edge demarcation and direct UCaaS integrations, Sansay stands out in high-throughput wholesale clearing, least-cost routing, and carrier-to-carrier peering. However, Sansay lacks proprietary turnkey branch hardware appliances and native enterprise routing suites, requiring buyers to provide their own server infrastructure or hypervisors.

What we found when we checked

Some points were supported, while others needed more context or changes.

  • Sansay's VSXi is a software-based SBC providing security, DDoS protection, NAT, protocol interworking, and traffic management for communications service providers.
  • Sansay's VSXi supports up to 500,000 concurrent sessions and clusters of up to 16 nodes on standard commercial off-the-shelf servers.
  • Sansay's Network License Zones feature allows dynamic sharing of session capacity across multiple nodes and even independently configured systems.
  • The Sansay vmVSXi runs on KVM, VMware, AWS, Google Cloud, IBM, and bare metal without additional site licenses per virtual instance.
  • Sansay offers a VSXi deployment option on Amazon EC2 via an AWS AMI for cloud-based session control.
  • AudioCodes offers Mediant SBCs in hardware, VM, and container versions all running the same software core, certified for Microsoft Teams Direct Routing.
  • Ribbon Communications offers Core, Edge, and Cloud SBCs tested for interoperability with Microsoft Teams, Zoom, RingCentral, and Cisco BYOC.
  • Cisco CUBE is deployed on Cisco IOS hardware platforms and targets enterprise and service provider SIP routing.
  • Oracle's SBC product (formerly Acme Packet) supports hardware-accelerated high-availability configurations scaling to large session counts.

Sources we used

Question 6

Why should a buyer choose Sansay?

Buyers should choose Sansay when they require high-density SIP signaling throughput, granular call routing control, and efficient multi-node scalability. A key purchasing scenario is wholesale voice aggregation or retail SIP trunking, where operators must process thousands of calls per second while executing least-cost routing and number portability queries in real time. Sansay's network license model makes it particularly attractive for geographically distributed networks, allowing operators to dynamically share session capacity across multiple data center nodes rather than overpaying for locked per-appliance licenses. Furthermore, teams dealing with multi-vendor SIP interoperability benefit from Sansay's flexible header manipulation and protocol normalization, which resolve trunking mismatches between disparate switches and carriers.

Sources: [1] [5]

Question 7

Why might a buyer choose a competitor instead of Sansay?

A buyer might choose a competitor when looking for turnkey physical appliances, all-in-one small business voice systems, or deeply bundled enterprise networking. Organizations standardizing on Cisco enterprise networks often choose Cisco Unified Border Element (CUBE) to leverage existing router hardware and unified licensing rather than introducing a separate specialized SBC. Similarly, enterprises deploying Microsoft Teams Direct Routing frequently prefer AudioCodes for its pre-certified edge appliances and analog gateway hardware. Tier-1 telecom operators pursuing vendor consolidation across massive core transport and IMS domains often choose Ribbon Communications or Oracle, which offer broader end-to-end portfolio coverage. Buyers lacking telecom engineering skills may also prefer fully managed cloud SBC services.

Sources: [7] [8] [9] [10]

What the AI said and what we found

What the AI said

A buyer might choose a competitor when looking for turnkey physical appliances, all-in-one small business voice systems, or deeply bundled enterprise networking. Organizations standardizing on Cisco enterprise networks often choose Cisco Unified Border Element (CUBE) to leverage existing router hardware and unified licensing rather than introducing a separate specialized SBC. Similarly, enterprises deploying Microsoft Teams Direct Routing frequently prefer AudioCodes for its pre-certified edge appliances and analog gateway hardware. Tier-1 telecom operators pursuing vendor consolidation across massive core transport and IMS domains often choose Ribbon Communications or Oracle, which offer broader end-to-end portfolio coverage. Buyers lacking telecom engineering skills may also prefer fully managed cloud SBC services.

What we found when we checked

The information we checked was supported.

Sources we used

Question 8

What are Sansay's key strengths and limitations?

Sansay’s key strengths include its proven software scalability and agile routing architecture. Independent testing by Miercom validated the VSXi for high session-handling capacity, sustaining thousands of calls per second. Its flexible network license pooling model allows operators to allocate call capacity across redundant geographic clusters without buying redundant fixed licenses for each site. Additionally, its integrated ROME engine offers powerful centralized least-cost routing and number portability lookups tailored for carrier margins. Conversely, a key limitation is Sansay’s strict software/platform specialization: it does not manufacture proprietary edge branch hardware appliances, leaving small branch office deployments reliant on third-party hardware. Another trade-off is the platform’s steep operational learning curve, requiring seasoned telecommunications engineers to design and maintain complex SIP manipulation profiles and routing matrices.

Sources: [4] [5] [6]

Question 9

What buyers should verify before purchasing from Sansay

1. Confirm node hardware sizing and hypervisor compatibility against planned concurrent call and media transcoding loads. 2. Verify the software licensing terms across active-standby high-availability pairs and multi-node network pools. 3. Review STIR/SHAKEN authentication, verification token integration, and third-party certificate authority compatibility. 4. Validate specific SIP header conversion and regex manipulation rules for upstream clearinghouse and carrier peering partners. 5. Check Technical Assistance Center (TAC) SLA response tiers, 24/7 emergency coverage terms, and planned major release upgrade support.
Terms used in this checklist
SIP trunk
An internet-based connection between a company’s phone system and the telephone network.

Sources: [1] [2] [3]

Other points to check

These notes came with the category Top 10 result. They suggest questions to raise with vendors—not verified findings about Sansay or reasons for its position.

Read the original test notes
  • Carrier-grade software SBC throughput varies significantly based on media-handling requirements, such as whether sessions require user-plane transcoding and SRTP encryption versus signaling-only passthrough.
  • Wholesale peering architectures often require specialized external least-cost routing (LCR) and anti-fraud engines, which may not be fully integrated into base SBC software licenses.
Question 10

Why might AI recommend Sansay's competitors instead?

AudioCodes, Cisco Systems, and Ribbon Communications may be recommended when buyer requirements specify enterprise hardware appliances, turnkey Microsoft Teams integration, or end-to-end optical and core infrastructure. AudioCodes is often chosen when an enterprise requires certified physical Microsoft Teams Direct Routing appliances, survivable branch appliances (SBAs), and integrated analog telephony adapters. Cisco Systems is preferred when an organization already operates Cisco enterprise networks and desires Cisco Unified Border Element (CUBE) to run natively on installed router hardware without adding external software platforms. Ribbon Communications is recommended when large telecommunications operators seek broad vendor consolidation across carrier optical transport, IP routing, and complex IMS core network architectures.

Sources: [8] [9] [10]

What the AI said and what we found

What the AI said

AudioCodes, Cisco Systems, and Ribbon Communications may be recommended when buyer requirements specify enterprise hardware appliances, turnkey Microsoft Teams integration, or end-to-end optical and core infrastructure. AudioCodes is often chosen when an enterprise requires certified physical Microsoft Teams Direct Routing appliances, survivable branch appliances (SBAs), and integrated analog telephony adapters. Cisco Systems is preferred when an organization already operates Cisco enterprise networks and desires Cisco Unified Border Element (CUBE) to run natively on installed router hardware without adding external software platforms. Ribbon Communications is recommended when large telecommunications operators seek broad vendor consolidation across carrier optical transport, IP routing, and complex IMS core network architectures.

What we found when we checked

The information we checked was supported.

Sources we used

Question 11

Which companies appeared in the category Top 10?

Sansay ranked #4
  1. #1
    Ribbon Communications

    Website listed in this result: rbbn.com

    Evaluated offering: Ribbon SBC Software Edition (SBC SWe) / SBC CNe

    Offers industry-standard software and cloud-native SBCs (SBC SWe and SBC CNe) built specifically for high-capacity carrier interconnect, wholesale peering, advanced policy routing, and telecom security.

  2. #2
    Oracle

    Website listed in this result: oracle.com

    Evaluated offering: Oracle Communications Session Border Controller (Virtual / Cloud Native SBC)

    Deploys widely established carrier-grade session border control software (formerly Acme Packet) delivering massive SIP session concurrency, robust topology hiding, carrier-to-carrier peering, and advanced routing engines.

  3. #3
    Nokia

    Website listed in this result: nokia.com

    Evaluated offering: Nokia Session Border Controller (SBC)

    Provides a carrier-grade, cloud-native Session Border Controller deployed by tier-1 CSPs globally for high-volume IMS interconnect, roaming, SIP peering, and core signaling/media protection.

  4. #4
    Sansay

    Website listed in this result: sansay.com

    Evaluated offering: Sansay VSXi Software SBC

    Specializes in high-performance carrier peering and wholesale VoIP session control, delivering deep least-cost routing (LCR), CDR accounting, and high-throughput software switching across provider borders.

  5. #5
    Ericsson

    Website listed in this result: ericsson.com

    Evaluated offering: Ericsson Virtual Session Border Controller (vSBC)

    Delivers virtualized and cloud-native Session Border Controller software (vSBC) for telecom interconnect, transit, and peering with high availability, media transcoding, and rigorous network border security.

  6. #6
    AudioCodes

    Website listed in this result: audiocodes.com

    Evaluated offering: AudioCodes Mediant Software SBC

    Offers carrier-focused virtualized and cloud software session border controllers with strong SIP interworking, high call capacity, flexible routing manipulation, and multi-tenant wholesale peering capabilities.

  7. #7
    Alianza

    Website listed in this result: alianza.com

    Evaluated offering: Metaswitch Perimeta SBC

    Offers Perimeta SBC, a software-based carrier-grade SBC featuring decoupled signaling and media architecture tailored for CSP access, wholesale interconnect, and cloud voice peering.

  8. #8
    TelcoBridges

    Website listed in this result: telcobridges.com

    Evaluated offering: TelcoBridges ProSBC

    Provides elastic, high-capacity software SBC solutions (ProSBC) designed for wholesale voice operators, offering dynamic SIP header normalization, API-driven routing, and flexible cost-per-session licensing.

  9. #9
    Enghouse Networks

    Website listed in this result: enghousenetworks.com

    Evaluated offering: Enghouse BorderNet SBC

    Supplies carrier-grade elastic software SBC technology (BorderNet SBC) built for high-throughput VoIP interconnect, SIP trunk aggregation, and network topology security across hypervisors and public clouds.

  10. #10
    Cataleya

    Website listed in this result: cataleya.com

    Evaluated offering: Cataleya Orchid Link SBC

    Engineers software-based, analytics-driven SBCs (Orchid Link) built specifically for international wholesale carriers and CSP interconnect, with integrated machine learning fraud detection and real-time QoS tracking.

Search history

Top 10 searches featuring Sansay

These are saved searches in which Sansay appeared. A result may originate from another company’s Buyer Guide; it is not necessarily Sansay’s own generated Question 11 test.

Buyer needLocationPositionModelDate
Communications service providers and wholesale operators evaluating carrier-grade session…Global#4 of 10GeminiSep 29, 2026
Alternatives mentioned in research

These companies were mentioned in accepted research, not ranked by an AI search. Linked names open existing Buyer’s Guide listings.

Evidence trail

Sources

These links record what the AI cited. A listed link does not, by itself, mean we verified a claim against its contents.

[2]
[3]
https://www.sansay.com/support/Retrieved Sep 30, 2026
[5]
[7]
https://www.oracle.com/Retrieved Sep 30, 2026
[8]
https://ribboncommunications.com/Retrieved Sep 30, 2026
[9]
https://www.audiocodes.com/Retrieved Sep 30, 2026
[10]
https://www.cisco.com/Retrieved Sep 30, 2026
[16]
[17]
https://www.sansay.com/products/Retrieved Sep 30, 2026
[19]
https://www.revesoft.com/Retrieved Sep 30, 2026
[20]
https://www.sansay.com/about-us/Retrieved Sep 30, 2026
[22]
https://www.sansay.com/webrtc/Retrieved Sep 30, 2026
About this test

How this search was run

These are the inputs to one recorded search—not a verified description of Sansay or its service area.

Model used
Gemini
Market searched
Session border controllers
Buyer need
Communications service providers and wholesale operators evaluating carrier-grade session border control software for high-volume SIP peering, security, and routing
Region searched
Global
Test date
Sep 29, 2026

Why this page exists: Buyers use AI to research vendors before making a shortlist. We preserve each response and its test date so you can see what appeared in that search.

How responses are checked: Selected questions about competition, differentiation, concerns, and recommendations are sent to a second model to check against available sources. Where that review produces usable findings, we show the original response and what the review found or changed. Other answers may cite sources without a separate review.

How the search is chosen: Before the Top 10 test, one model identifies the most appropriate market, buyer need, and region for this company. A second model reviews those inputs. The reviewed inputs become the search used for the blind Top 10 test. The market shown is where the test placed the company, not a category verified by TMC or chosen by the company. It may be broader, narrower, or different from how the company describes itself. That difference is part of what this page records.

What the ranking means: The Category Top 10 shows how the company appeared in this specific search. It is not a measure of quality, size, or market share. The reviewing model checks the test inputs, not the returned ranking. Linked names have live company profiles; identity verification does not independently verify every recommendation claim.

For companies: This record shows what the test picked up and which sources it cited. Missing or mistaken details may point to public information worth clarifying, but do not by themselves explain why the response said what it did.

Exact test setup and model roles

This result uses a two-model process before the ranking. Gemini proposed the most applicable provider category, buying context, and geography from its company research; Claude independently reviewed and could correct those inputs. The final Top 10 list was then generated by one blind test of Gemini, which received the reviewed category, buying context, geography, and date—but not Sansay’s identity. Claude did not review or rerank the returned Top 10 list, so the ranking itself is not a consensus across AI systems. Provider names identify the AI family; exact model versions and testing configuration are maintained internally.

The original test notes are available with the buyer checklist.

Reader perspectives

Community notes

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