What Connex Carrier Services does

Connex Carrier Services Limited (trading as ConnexCS) is a UK-incorporated private limited company headquartered in Shrewsbury with a trading office at Keele University Science Park, providing a cloud-native telecommunications platform to wholesale VoIP carriers, enterprises, call centres, UCaaS providers, and WebPhone/dialer developers. The platform is built around a horizontally scalable SIP softswitch deployed across heterogeneous multi-provider cloud infrastructure with globally distributed proximity points-of-presence, Anycast-based load balancing via the AnyEdge product, and a SIP-to-WebRTC gateway with codec transcoding.

Core products comprise a Class 4 SIP Cloud Switch for wholesale VoIP routing and billing, a multi-tenant HA Class 5 PBX for hosted telephony, the AnyEdge SIP Load Balancer, WebRTC-as-a-Service, and an AI Agent platform supporting 20+ languages for call centre automation. Supporting solutions include native STIR/SHAKEN call authentication, telecom billing with multi-currency and re-rating capabilities, call recording, real-time call transcription with phrase-based alerting, and ScriptForge, a JavaScript routing engine for custom call logic.

The business model combines usage-based per-minute voice termination pricing ($0.0003/min, with 33.33% volume discounts above 10M minutes/month), recurring software subscriptions ($25/month Base, $150/month Premium), server infrastructure fees ($20/server/month), and a broad catalogue of usage-based add-ons covering AI tokens, transcription, recording, fraud screening, and storage. Distribution is primarily product-led through a self-serve portal at app.connexcs.com, supplemented by a sales-assisted motion for enterprise and custom development requirements, with developer documentation and APIs enabling UCaaS and dialer integrations. The company operates globally with publicly cited coverage in the UK, USA, Canada, Australia, China, Japan, India, South Korea, Brazil, South Africa, and EU markets, and holds ISO 9001, ISO 27001, SOC 2 Type 2, GDPR, CCPA, and PDPA compliance certifications.

Name

Connex Carrier Services

Legal name

Connex Carrier Services Limited

Website

https://connexcs.com

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

11–50 employees

Short description

ConnexCS is a UK-based cloud-native telecommunications platform offering Class 4 SIP switching, multi-tenant Class 5 PBX, AnyEdge Anycast load balancing, WebRTC gateway, and AI voice agent services to wholesale carriers, enterprises, call centres, UCaaS providers, and WebPhone developers globally.

Ownership category

akta.pro rank

Product category

Cloud VoIP Infrastructure

NAICS

Software Publishers (513210), Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (518)

SIC

Services-Telephone Interconnect Systems (7385), Services-Prepackaged Software (7372)

akta.pro primary industry

Cloud PBX & Hosted Telephony (HDAIAHAB)

akta.pro secondary industry

Cloud Networking Core Services (VPC/VNet, Load Balancing, DNS, NAT) (HDABAAAJ)

Keywords

• Cloud VoIP switching
• Class 4 softswitch
• Class 5 PBX
• STIR/SHAKEN compliance
• Telecom billing platform

Headquarters

HQ city

Shrewsbury

HQ country

United Kingdom

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Infrastructure, Personnel, Operations, Marketing or Sales

Revenue model

1. Per-Minute Voice Termination: Usage-based billing at $0.0003/minute for voice traffic. Volume discounts apply: exceeding 10 million minutes monthly triggers 33.33% discount reducing rate to $0.0002/min plus $1000 account credit.
2. Server/Channel Infrastructure: Monthly server costs at $20/server/month with minimum charges. Channel-based pricing with configurable capacity up to 3K+ channels available at custom pricing.
3. Software Plans (Base & Premium): Base Plan at $25/month includes standard support, advanced routing, profit assurance, and global server network. Premium Plan at $150/month adds priority support, transcription, recording, AI capabilities, 100GB storage, and AnyEdge load balancer.
4. Add-on Services: Various usage-based add-ons: Call Recording ($0.0003/channel/min), IP Quality Score ($0.004/dip), Spam Scout ($0.004/dip), Google Transcribe ($0.000333/sec), Google TTS ($0.000004/character), ChatGPT 4o ($0.00003/token), Programmatic Call Origination ($10/call/second), Dedicated NOC ($500/month), Storage ($0.33/TB/day).
5. AnyEdge Load Balancer: AnyEdge available at $20/server. Free for customers consistently handling more than 2000 channels of traffic.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

ConnexCS provides a cloud-native SIP softswitch platform delivering Class 4 wholesale VoIP routing and billing, multi-tenant Class 5 hosted PBX, Anycast SIP load balancing, a SIP-to-WebRTC gateway, and an AI voice agent platform. The platform also bundles STIR/SHAKEN call authentication, real-time telecom billing and reporting, call recording and transcription, and ScriptForge JavaScript routing. It is sold as a SaaS subscription plus usage-based voice termination and add-ons to carriers, enterprises, call centers, and UCaaS providers globally.

Product overview

ConnexCS (Connex Carrier Services) offers a cloud-native telecommunications platform comprising core switching and PBX products plus complementary solutions. The core portfolio includes: Class 4 SIP Cloud Switch for wholesale VoIP routing and billing; HA Class 5 PBX for multi-tenant hosted PBX services; AnyEdge SIP Load Balancer for Anycast-based load balancing and DDoS protection; WebRTC As A Service for browser-based SIP calling; and AI Agent for automated voice customer service. Supporting solutions include STIR/SHAKEN call authentication, carrier-grade SIP switching, billing and reporting, call recording, call transcription, and ScriptForge for custom JavaScript routing. The platform is delivered as SaaS with cloud-hosted or on-premises options, and integrates with Google AI services (Transcribe, TTS), OpenAI (ChatGPT), analytics tools, and notification services.

Differentiator

Problem solved

Functional benefit

Products and services

• Class 4 SIP Cloud Switch Cloud-based carrier service for routing and billing VoIP calls. Horizontally scalable SaaS platform with intelligent routing, real-time stats, rate card management, fraud detection, CDRs, SIP packet capture, and global server deployment. Built for wholesale VoIP carriers and telecom operators needing carrier-grade voice switching.
• HA Class 5 PBX Multi-tenant cloud PBX with hunt groups, call queues, IVR, conference bridges, and voicemail on globally redundant infrastructure. Supports up to 50 agents with 2 concurrent calls, expandable to unlimited endpoints. Priced from $1.25 per endpoint per month. Aimed at enterprises and service providers needing hosted PBX.
• AnyEdge SIP Load Balancer Anycast SIP load balancer providing high availability and surge protection for SIP infrastructure. Features up to 10 Gbps DDoS protection, nearest-edge routing via BGP, SIP-aware controls, automatic failover, and a 10,000 calls-per-second design target. Priced at $20/server with free usage above 2,000 channels.
• WebRTC As A Service SIP to WebRTC gateway enabling browser-based calling as a SaaS solution. Provides media transcoding between ulaw, alaw, g729, g722, g723, speex, and opus codecs, multi-tenant segmentation, and API configuration. Includes a PWA webphone application for end users.
• AI Agent AI-powered voice agent platform for automating call center operations with 24/7 availability. Supports 20+ languages, customizable prompts, sentiment analysis, real-time transcription, human escalation, and configurable voice synthesis. Deploys in minutes with no long onboarding. Priced via LLM token usage (ChatGPT 4o, ChatGPT 4o Mini) plus transcription/TTS add-ons.
• STIR/SHAKEN Call Authentication Call authentication framework for verifying caller identity and signing calls with digital certificates to combat robocalls and fraud. Provides A, B, and C attestation levels with a granular policy engine. Native signing inside the softswitch avoids external middleware. Aimed at carriers and call centers needing regulatory compliance.
• Carrier Grade SIP Switching High-volume VoIP routing at global scale with dedicated IP addresses, proximity POPs, and global RTP clusters. Cloud-first architecture for rapid scalability with controls over VoIP operations. Designed for wholesale carriers, transit providers, and service providers handling large volumes of traffic.
• Billing and Reporting Telecom billing platform transforming usage data into invoices, financial reports, and profitability insights. Features real-time CDR processing, multi-currency support, automated invoicing, re-rating when rate cards update, and profit reports per customer and route. Built for wholesale carriers and enterprises that need margin visibility.
• Call Recording Inline call recording delivered in real time with full-coverage or percentage-based sampling. Records stored with Call-ID indexing, timestamp, and secure access. Enables performance monitoring, agent quality assurance, and compliance. Priced at $0.0003 per channel per minute plus $0.33/TB/day storage.
• Call Transcription Real-time transcription of calls with query profile matching using Boolean operators and lemmatization. Detects phrases for fraud detection, compliance monitoring, and agent quality, triggering alerts or hangups based on phrase detection. Priced at $0.000333/second via Google Transcribe add-on.

Quantifiable outcome

• Detection-to-action latency under 3 seconds for fraud/compliance phrase detection
• +3 more outcomes

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

AI capability11 records

Feature9 records

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Telnyx: Telnyx operates a global private IP network offering SIP trunking, cloud PBX, and programmable communications APIs to carriers and enterprises. Directly comparable to ConnexCS on Class 4 SIP switching, carrier services, and developer-first CPaaS positioning.
• Bandwidth Inc. Bandwidth is a communications platform-as-a-service provider offering carrier-grade voice, messaging, and 911 services to enterprises and CPaaS partners. Directly comparable to ConnexCS on wholesale voice termination, SIP trunking, and STIR/SHAKEN-compliant carrier services.
• PortaOne: PortaOne provides PortaSwitch, a convergent Class 4/5 softswitch and billing platform for VoIP service providers and carriers globally. Directly comparable to ConnexCS on multi-tenant hosted PBX, SIP switching, and telecom billing for service providers.
• NetSapiens: NetSapiens offers a white-label UCaaS/CPaaS platform with Class 4/5 switching, hosted PBX, and SIP trunking for service providers. Directly comparable to ConnexCS on multi-tenant cloud PBX, carrier-grade SIP switching, and white-label enablement for carriers and UCaaS resellers.
• VOS3000 (Virtual Softswitch): VOS3000 is a widely deployed Class 4 softswitch for VoIP carriers and wholesalers, used for high-volume termination and billing. Listed by ConnexCS on its own competitive comparison page; directly comparable on Class 4 SIP switching and wholesale VoIP termination.
• 46 Labs: 46 Labs provides a software-defined communications platform including carrier-grade SIP switching and voice services for enterprise and carrier customers. Explicitly named as a direct comparison by ConnexCS on its website and directly comparable on hosted SIP switching and carrier services.
• SIPTRUNK / Sippy Software: Sippy Software provides a Class 4/5 softswitch, billing, and routing platform for wholesale VoIP carriers and service providers. Comparable to ConnexCS on carrier-grade SIP switching, wholesale billing, and LCR routing for VoIP operators.

Broad incumbents

• Twilio: Twilio is a large public CPaaS incumbent offering voice, messaging, and SIP trunking (Elastic SIP Trunking) to enterprises and developers. Overlaps with ConnexCS on programmable voice and carrier services but operates at much greater scale across a broader product portfolio.
• Vonage (Ericsson): Vonage, now part of Ericsson, offers UCaaS, CPaaS, and SIP trunking services to enterprises and developers globally. A broad incumbent whose SIP trunking and hosted communications overlap with ConnexCS's Class 4/5 and UCaaS offerings but at much larger scale.

Emerging players

• Plivo: Plivo offers cloud communications APIs for voice and SMS targeting developers and SMBs. Partial overlap with ConnexCS on programmable voice and SIP services; smaller and more focused on CPaaS than carrier switching.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• GitHubgithub.com/ConnexCS
• LinkedInlinkedin.com/company/connexcs

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Connex Carrier Services