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Apply AI Where It Delivers Real Business Impact
SESTEK helps organisations automate customer interactions, improve agent performance, strengthen security, and gain actionable insights from every conversation.
As part of the CallTower AI portfolio, SESTEK integrates with existing contact centre environments, allowing organisations to add AI capabilities without replacing their current CCaaS platform.
Whether you’re focused on self-service, operational efficiency, customer satisfaction, or agent productivity, CallTower helps you deploy and optimise AI solutions that deliver real business outcomes.
About SESTEK
SESTEK is a global provider of conversational AI solutions with more than 20 years of experience helping organisations improve customer experience through automation and intelligent engagement.
40% of revenue invested in research and development
60% of employees focused on engineering and AI
100% of core technologies developed in-house
Proven experience supporting enterprise AI deployments
SESTEK combines conversational AI, analytics, biometrics, agent support, and multilingual capabilities in a unified platform built specifically for contact centres.
What SESTEK AI Solutions Can Do
- SESTEK helps organisations: Automate customer interactions across voice and digital channels
- analyse customer conversations at scale
- Support agents during live interactions
- Authenticate customers through voice biometrics
- Enable multilingual engagement
- Improve operational efficiency and customer satisfaction
- Apply AI without replacing existing CCaaS investments
SESTEK AI Solutions
Virtual Agent
SESTEK Virtual Agent enables AI-powered self-service across voice and digital channels. It helps resolve routine inquiries, reduce call volumes, and improve service availability without adding unnecessary complexity to the customer journey.
Benefits:
- 24/7 automated customer support
- Reduced inbound call volume
- Faster response times
- Improved self-service adoption
- More consistent customer experiences
Analytics & Automated Quality Management
SESTEK Analytics and Automated Quality Management help organisations evaluate customer interactions at scale. Instead of relying only on manual QA sampling, teams can analyse conversations more consistently and identify trends that impact customer experience and agent performance.
Benefits:
- analyse 100% of interactions
- Identify sentiment, trends, and key conversation moments
- Improve agent coaching and performance management
- Automate QA scoring and benchmarking
- Gain better visibility into customer needs and friction points
Real-Time Guidance and Agent Assist
SESTEK Real-Time Guidance supports agents during live customer conversations by delivering prompts, recommendations, compliance reminders, and contextual insights while the interaction is happening.
Benefits:
- Real-time prompts and recommendations
- Improved agent consistency
- Better compliance support
- Faster access to relevant information
- Stronger customer outcomes during live interactions
Voice Biometrics
SESTEK Voice Biometrics helps organisations authenticate customers using their voice, reducing friction while strengthening security.
Benefits:
- Faster customer verification
- Reduced authentication effort
- Improved fraud detection
- Support for synthetic voice detection
- Better customer experience during secure interactions
Real-Time Translation
SESTEK Real-Time Translation helps agents and customers communicate across languages by detecting spoken language, translating the message, and supporting multilingual conversations in real time.
Benefits:
- Multilingual support at scale
- Improved accessibility
- Reduced reliance on separate translation services
- Better support for global and diverse customer bases
- More consistent service across regions
Core AI Technologies
SESTEK solutions are powered by proprietary AI technologies developed in-house, including:
Benefits:
- Speech recognition
- Natural language processing and understanding
- Text-to-speech
- Real-time translation
- Machine learning models optimised for customer experience environments
- Voice biometrics
- Conversational analytics
- Agentic AI capabilities
These technologies work together to support automation, intelligence, security, and real-time decision-making across modern contact centre operations.
Why organisations Choose SESTEK
organisations choose SESTEK because it helps them add advanced AI capabilities without forcing a full contact centre replacement.
SESTEK stands out because it:
- Works across existing CCaaS and contact centre environments
- Complements current technology investments
- Combines automation, analytics, biometrics, translation, and agent support
- Supports flexible deployment models
- Provides AI capabilities designed specifically for customer experience operations
- Helps organisations improve both customer-facing and agent-facing workflows
Business Outcomes
organisations use SESTEK to:
- Reduce call volumes through automation
- Improve self-service adoption
- Increase agent productivity
- Strengthen fraud prevention and authentication
- Gain visibility into customer interactions
- Deliver consistent multilingual customer experiences
The CallTower Advantage
Why organisations Choose CallTower for SESTEK:
In-House AI Expertise
CallTower’s dedicated AI team helps organisations move from AI strategy to successful deployment. From Virtual Agents and Agent Assist to conversational intelligence, voice biometrics, and agentic AI, we help customers turn AI investments into measurable customer experience and operational improvements.
Proven Contact centre Expertise
Deep experience deploying and integrating Genesys, Five9, Zoom Contact centre, Webex Contact centre, CT Contact centre, and Ascend Teams Contact centre environments.
Consulting-Led AI Delivery
Strategy-first approach that aligns AI initiatives to business goals, CX objectives, and measurable outcomes before design and deployment.
End-to-End Implementation & Lifecycle Ownership
From architecture and integration to deployment, adoption, optimization, and long-term management.
Advanced Integration Expertise
Seamless connectivity across UCaaS, CCaaS, CRM, ERP, WFM, analytics platforms, and business applications.
Global Delivery & Enterprise Execution
Supports complex, multi-region deployments with enterprise-grade delivery, governance, and scalability.
AI Professional Services for SESTEK
CallTower helps organisations move from AI strategy to production through:
- AI roadmap development
- Use case identification
- Business outcome alignment
- Virtual Agent implementation
- Agent Assist deployment
- AI workflow design
- Platform integrations
- Performance monitoring
- Experience optimization
- Continuous improvement through analytics
Get Started with SESTEK delivered by CallTower
SESTEK delivers the AI technology. CallTower delivers the expertise to implement, integrate, optimise, and scale it.
