Callroute

What Callroute does

Callroute, operated by UK-registered Sipsynergy Ltd. and headquartered in Eastleigh, United Kingdom, is a cloud-based SaaS platform that functions as an intelligent control layer between phone numbers, carriers, and downstream voice services. The platform routes numbers to Microsoft Teams (via Direct Routing and the integrated Orto user management technology), Cisco Webex (via Local Gateway), legacy PBXs, SIP devices, contact center platforms (Five9, Genesys, Enghouse Interactive, Anywhere365, Netcall), and Voice AI endpoints without requiring re-porting. Built on the global AWS footprint with an active-active redundancy architecture and serving over 150,000 users across 65+ countries, the platform targets enterprise voice orchestration, multi-tenant management, and PSTN-to-cloud migration scenarios driven by the UK PSTN switch-off and broader UCaaS adoption.

The product portfolio centers on Microsoft Teams Phone plans (Essentials at £4.95/user/month for 1-19 users, Professional at £9.95/user/month for 20-99 users, Advanced at quote-based pricing for 100+ users, and Bring Your Own Carrier at £2.50/user/month with a 100-user minimum), supplemented by the Orto Teams user management module, native PSTN call recording plus Microsoft-certified ClarifyGo recording (with MiFID II/WORM compliance), Voice AI routing with hybrid human escalation, international and toll-free numbering, granular RBAC/GRBAC, and real-time reporting and analytics. The company is ISO 27001:2022 and ISO 9001:2015 certified.

Callroute operates a hybrid go-to-market combining direct enterprise field sales, a self-service portal with a 14-day free trial, and an MSP/reseller channel for multi-tenant customer environments. Customers include Amcor, Lavazza, Clinigen, Dexcom, Regeneron, Fortive, Banco do Brasil, Scottish Government, Nottingham City Council, Rushmoor Borough Council, and Telford and Wrekin Council, spanning manufacturing, healthcare, biotechnology, financial services, education, and public sector verticals. The company maintains a 30+ verified carrier ecosystem spanning EMEA, USA, and APAC and carries 5-star ratings on Capterra, GetApp, and Software Advice. The website co-brands with publicly traded UCaaS provider 8x8, indicating a strategic relationship, though no explicit acquisition, funding round, or ownership disclosure is available in the source data.

Name

Callroute

Legal name

Sipsynergy Ltd.

Website

https://callroute.com

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

11–50 employees

Short description

Callroute (Sipsynergy Ltd.) is a UK-based cloud SaaS platform providing enterprise voice routing, number management, and Microsoft Teams Phone integration, connecting carriers, contact centers, PBXs, and Voice AI systems across 65+ countries.

Ownership category

akta.pro rank

Product category

Cloud Communications / Voice Management Software

NAICS

Wired and Wireless Telecommunications (except Satellite) (5171)

SIC

Telephone Communications (No Radiotelephone) (4813), Services-Prepackaged Software (7372)

akta.pro primary industry

Cloud PBX & Hosted Telephony (HDAIAHAB)

Keywords

• Cloud telephony platform
• Voice routing software
• Microsoft Teams calling
• Number management SaaS
• PSTN connectivity services

Headquarters

HQ city

Eastleigh

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. Subscription - Per User: Core revenue from monthly per-user subscription plans (Teams Phone Essentials, Professional, Advanced, BYOC). Users are billed based on the plan tier selected with bundled domestic minutes and features.
2. Number Management Fees: Additional revenue from number management: Callroute-provided numbers charged monthly rental plus usage; BYOC numbers charged per number assigned to a user or service. Microsoft Teams numbers (Calling Plans/Operator Connect/Direct Routing) billed per user the numbers are assigned to.
3. Call Recording Add-on: Native PSTN call recording offered as an add-on per user (£4.50 monthly per user). Advanced Teams call recording via ClarifyGo included with Teams Phone Advanced plan.
4. International and Toll-Free Numbers: Revenue from purchasing international and toll-free numbers in 65+ countries. International and Toll-Free numbers sold as add-on to any plan or purchased ad-hoc, priced upon request (POA).
5. Orto Number Management Reporting: Orto provides deeper number lifecycle and utilisation reporting including range exhaustion and assignment visibility. Offered as an optional add-on enhancing operational governance.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

Callroute is a cloud-based SaaS control layer that centralises and routes phone numbers between carriers, Microsoft Teams, Webex, contact center platforms, PBXs, SIP devices, and Voice AI services. It enables organisations to manage users, numbers and policies through a self-service portal without requiring telecom expertise or repeated number porting, with Bring Your Own Carrier or Callroute-as-carrier options.

Product overview

Callroute is an award-winning global SaaS platform that serves as the control layer for modern business voice. The core Callroute Platform connects carriers, services, and phone numbers through one intelligent portal. The product portfolio includes Microsoft Teams Phone plans (Essentials, Professional, Advanced, and BYOC) for PSTN calling via Direct Routing, Webex Calling integration via Local Gateway, and SIP Device Support for connecting ad-hoc endpoints. Teams User Management is powered by Orto, enabling automation of number assignment and policy management. Additional services include Teams Mobile Extend (eSIM-based mobile calling), Teams Shared Calling, and Contact Center Platform Integration connecting to Genesys, Five9, Enghouse, Anywhere365, and Netcall. Voice AI Routing enables AI-driven call handling with hybrid human escalation. Recording capabilities include Native PSTN Recording and Microsoft-certified ClarifyGo for Teams. Number Management covers international and toll-free numbers from 65+ countries. Built-in features include Reporting & Analytics and Roles & Access Management (RBAC/GRBAC). Callroute supports both using Callroute as the carrier and Bring Your Own Carrier (BYOC) models.

Differentiator

Problem solved

Functional benefit

Brands

• Orto: Enterprise-grade Microsoft Teams user management technology integrated into the Callroute platform for managing Teams users, numbers and policies.

Products and services

• Callroute Platform Award-winning global SaaS control layer for modern business voice that connects carriers, voice services and phone numbers through one intelligent portal without telecom complexity or repeated number porting. Targets enterprises, SMBs, MSPs, government and contact center operators.
• Orto Teams User Management Enterprise-grade Microsoft Teams user management that automates number assignment, policy packs (personas), and user lifecycle management based on Microsoft Entra ID attributes. Designed for organisations managing large Teams estates and for MSPs running multiple tenants.
• Webex Calling Integration Enables organisations to route phone numbers to Cisco Webex Calling via the Local Gateway model in just a few clicks, with all routing, assignment and control managed centrally in the Callroute portal.
• Teams Mobile Extend Brings a Microsoft Teams business number to a mobile phone's native dialer using eSIM technology, enabling cellular network calling without relying on mobile data or a separate app.
• Teams Shared Calling Supports shared phones and group calling scenarios on Microsoft Teams without assigning individual numbers to every user; intended for reception desks and frontline environments.
• SIP Device Support Connects ad-hoc SIP devices including DECT handsets, desk phones, conference phones, lobby phones, intercoms, lift phones and emergency phones outside the core UC platform with lightweight dial tone support.
• PBX and Analogue Connectivity Connects existing PBXs and analogue devices to Callroute via SIP trunk or ATA, enabling hybrid voice estates where legacy and modern services coexist.
• Contact Center Platform Integration Connects phone numbers to cloud contact center platforms (Genesys, Five9, Enghouse Interactive, Anywhere365, Netcall) via SIP trunking with central routing, resilience and scale control.
• Voice AI Routing Routes phone numbers to Voice AI platforms and chatbots for automated call handling, allowing calls to seamlessly move from Voice AI to Microsoft Teams users, contact center platforms or other services with automatic failover.
• Native Call Recording Native PSTN call recording service that records all calls traversing the Callroute network, with instant playback, download and multi-year archiving, MiFID II compliance and WORM storage. Offered as an add-on to any plan.
• ClarifyGo Microsoft-Certified Call Recording Microsoft-certified advanced call recording for Teams that captures PSTN and Teams calls (voice and video) with secure Azure storage, configurable retention policies and instant playback, delivered in partnership with OAK/ClarifyGo.
• International and Toll-Free Numbers Compliant UK, international and toll-free numbers from 65+ countries with instant provisioning, integrated call analytics and Microsoft Teams Direct Routing support. Sold as an add-on to any plan or purchased ad-hoc at price on application.
• Number Management Centralised phone number management supporting Callroute-provided numbers, Bring Your Own Carrier numbers, Microsoft Calling Plans, Operator Connect and Direct Routing numbers with grouping, reservations and quarantine controls.

Quantifiable outcome

• 150,000+ users managed on the platform
• +3 more outcomes

Named customers18 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration10 records

AI capability3 records

Feature9 records

Partnerships

Twelve partnerships are on record, tiered core.

• BTcoreTechnology or IntegrationTier-1 wholesale carrier interconnect. Callroute leverages BT's network infrastructure for PSTN connectivity. BT is one of the primary Tier-1 carriers delivering calls and numbers for Callroute customers.
• GammacoreTechnology or IntegrationTier-1 wholesale carrier interconnect. Gamma provides voice services over which Callroute routes calls for customers using Callroute as their carrier.
• BandwidthcoreTechnology or IntegrationTier-1 wholesale carrier and verified carrier partner. Bandwidth is one of the carriers Callroute uses to deliver PSTN services globally.
• Gamma (EMEA)coreTechnology or IntegrationVerified EMEA carrier partner with pre-validated connection to Callroute infrastructure. Gamma is among the first carriers listed in the verified carrier ecosystem.
• Five9coreTechnology or IntegrationContact center platform connected to Callroute via SIP trunking. Callroute routes phone numbers to Five9 as a voice destination, enabling hybrid contact center environments.
• GenesyscoreTechnology or IntegrationCCaaS platform integrated with Callroute. Numbers can be routed to Genesys contact center via SIP trunking with Callroute managing the control layer.
• ClarifyGo / OAKcoreTechnology or IntegrationMicrosoft-certified advanced call recording solution for Teams. Provides compliance-ready recording with Azure storage, configurable retention policies, and full Teams communications coverage.
• MicrosoftcoreTechnology or IntegrationDeep integration partnership with Microsoft for Teams Phone via Direct Routing and Orto Teams User Management. Microsoft 365 admin consent flow enables automatic sync. Callroute is a Microsoft partner providing voice connectivity.
• Cisco WebexcoreTechnology or IntegrationWebex Calling integration via Cisco Local Gateway model. Callroute connects to Webex as a voice service, routing numbers to Webex tenants with minimal configuration.
• OrtocoreTechnology or IntegrationEnterprise-grade Teams user management technology integrated into Callroute. Enables number assignment, policy packs (personas), automated provisioning based on Entra ID attributes.
• AWScoreTechnology or IntegrationCloud infrastructure provider. Callroute operates on the global AWS footprint with active-active architecture for high availability and resilience.
• 8x8coreTechnology or IntegrationParent company/brand relationship. 8x8 Callroute logo visible on website indicating corporate affiliation. Callroute operates as part of the 8x8 voice communications portfolio.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Genesys: Global CCaaS leader. Genesys is a Callroute integration partner for SIP trunking but also sells its own voice and contact center stack to enterprise customers that Callroute serves.
• Sinch: Global CPaaS and UCaaS provider operating Voice, Messaging, and Email APIs alongside UCaaS acquisitions. Sinch is a verified carrier partner of Callroute but also competes broadly in cloud communications and programmable voice routing.
• Five9: Public CCaaS provider integrated with Callroute via SIP. Five9 sells its own cloud contact center with bundled voice routing, partially overlapping with Callroute's contact center routing capabilities.

Direct peers

• RingCentral: Public UCaaS leader offering cloud PBX, Teams integration, contact center, and global number management to enterprises. Competes with Callroute for mid-market and enterprise voice spend with comparable subscription per-user pricing.
• Microsoft Teams Phone (Operator Connect / Calling Plans): Microsoft's first-party PSTN offering for Teams. Operator Connect and Calling Plans are the direct native alternative to Callroute's Teams Phone plans and Direct Routing control layer, sold to the same enterprise IT buyers managing Microsoft 365 voice estates.
• Zoom Phone: Zoom's cloud PBX service bundled with the broader Zoom collaboration platform. Targets the same enterprise and SMB segments as Callroute with a self-service, per-user subscription model and global number availability.
• Gamma Communications: UK-headquartered communications provider offering cloud PBX, SIP trunking, Teams Direct Routing, and inbound number services. Gamma is both a Callroute carrier partner and a competing voice platform to UK enterprise buyers.
• 8x8: Global UCaaS and CCaaS provider. 8x8 is co-branded with Callroute on the company's website, indicating the closest commercial relationship. Both sell cloud voice, Teams integration, contact center routing, and number management to enterprise and government buyers globally.
• Vonage (Ericsson): Vonage provides UCaaS and CPaaS with strong API-based voice, messaging, and number management capabilities. Now part of Ericsson, it competes with Callroute on programmable voice and enterprise number orchestration.

Emerging players

• Telnyx: Cloud communications provider offering SIP trunking, global numbers, and programmable voice APIs. Telnyx is a verified Callroute carrier partner but also serves overlapping developer and enterprise voice-routing use cases.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/callroute
• Facebookfacebook.com/callroutecomms

Compliance3 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 Callroute