Unified Contact Center & AI Voice Platform
Build a Next-Gen Contact Center with Dialer, IVR & AI Voice Bots
We engineer custom dialers, IVR, WebRTC, and CRM on Asterisk, FreeSWITCH, and OpenSIPS — tailored to your dialplan, compliance zone, and CRM stack. Cloud, on-prem, or hybrid.
- Outbound & Inbound
- AI Voice Bots
- Omnichannel
- Scalable & Secure
Products
- Auto DialerPredictive, Progressive, Preview & C2C
- IVR & Call FlowsDrag & drop IVR builder with real-time updates
- AI Voice BotsSTT, LLM & TTS for human-like conversations
- Agent DesktopAll-in-one agent console (Voice, Chat, CRM)
- CRM & Lead ManagerManage leads, follow-ups & customer journeys
- Communication WalletSMS, WhatsApp & multi-channel campaigns
- Reports & AnalyticsReal-time & historical call, agent & campaign reports
NSSSoft in numbers
Built On Proven Technology
- Asterisk
- OpenSIPS
- FreeSWITCH
- Java
- Spring Boot
- React
- Docker
New · AI voice bots
Don't read about it. Talk to it.
Our AI voice bots qualify leads, book appointments and remind EMIs in Hindi, English and Hinglish, on your own phone lines. Talk to Riya, our real-estate bot, right here — or try a bot for your industry.
Real Estate · Outbound
Riya · Skyline Greens (demo)
Ready when you are
You play the customer. Try saying:
Hinglish · English · Hindi2-min demo · uses your microphone · audio is processed live by our AI provider and not stored by NSSSoft
Outbound Dialing
Pick the dialing mode your team actually needs
Not every campaign is the same. NSSSoft engineers all three dialer modes — often running concurrently on the same platform — so you can match pacing to use case.
Predictive Dialer
An outbound dialer that dials several numbers per free agent, pacing calls on answer rates and handle time so agents spend their time talking, not waiting.
Best for
- High-volume outbound BPOs
- Debt collection & recovery
- Telemarketing & insurance
Key Capabilities
- Answering-machine detection (AMD)
- DND / NCPR and internal do-not-call scrubbing
- Abandonment-rate control (target ≤3%)
- Dynamic dial ratio (1:1 → 3:1 per skill group)
- Real-time supervisor dashboards
Open-Source Cores
Enterprise depth on open-source foundations
We don't resell hosted platforms. We own the code, manage the configs, and support what we build. Each platform is hardened, monitored, and scaled to your exact traffic profile.
The PBX workhorse — owned and mastered
Asterisk
We build and maintain production Asterisk deployments from scratch — custom dialplans, ARI/AMI application integrations, FreePBX hardening, and multi-tenant queue configurations. If your workflow needs it, we dialplan it.
- Custom IVR trees & DTMF handling
- Skill-based & priority queuing
- ARI/AMI REST & event-socket apps
- FreePBX + custom GUI modules
- Recording, transcription & archival
Media powerhouse for high-concurrency stacks
FreeSWITCH
FreeSWITCH is our choice when a single node must carry 5,000–10,000 concurrent calls with full transcoding, conferencing, or WebRTC bridging. We write ESL applications and maintain the core from source.
- 10k+ concurrent SIP sessions per node
- WebRTC gateway (SIP↔WebRTC bridge)
- Conference & broadcast servers
- Real-time ESL event-socket apps
- Codec transcoding (G.711, G.729, Opus)
Carrier-grade SIP routing at the edge
OpenSIPS
OpenSIPS is our session border controller — handling SIP load balancing, least-cost routing, fraud detection, and number-range management at the carrier layer before calls ever touch a media server.
- SIP load balancing & failover
- Session Border Controller (SBC)
- Least-cost routing (LCR)
- Real-time fraud detection & rate-limiting
- Mobile number portability (MNP) & DID routing
Architecture
How every call moves through the stack
From carrier ingress to agent desktop — every layer is owned, configured, and monitored by NSSSoft engineers. Hover any node for details.
By Industry
Built for your vertical, not just "contact centers"
Every industry has different compliance requirements, call flows, and KPIs. We've shipped production systems in each of these — and know the edge cases that matter.
BPO
Multi-client, multi-campaign predictive dialing with isolated tenants, real-time reporting, and agent-level KPIs.
Debt Collection
Progressive dialing within permitted hours, DND scrubbing, right-party verification IVR, and payment-link SMS.
BFSI
Encrypted call recording with pause-and-resume during sensitive data capture, long-term call archival, and CTI for core banking.
Healthcare
Consent-led call flows, appointment reminders via IVR & SMS, consent capture, and patient-ID verification.
EdTech
High-volume lead-gen calling for admissions, auto-scheduled demo reminders, and WhatsApp follow-up integration.
Real Estate
Preview dialing for high-ticket property sales, geo-targeted lead routing, and automated site-visit scheduling SMS.
ITSP / Carrier
OpenSIPS-based multi-tenant SIP trunk provisioning, LCR, number inventory management, and CDR billing APIs.
Product Deep Dive
Every product, engineered end-to-end
These aren't checkboxes on a feature list. Each module below is a production system we've shipped, maintained, and scaled for real contact centers.
Lead Management System
Ingest leads from any source — CSV, CRM webhook, or API — and run them through configurable scrub rules (DND, calling hours, duplicates) before a single dial goes out. Recycling queues automatically re-attempt based on disposition codes and cooling periods.
- DND & internal do-not-call scrubbing on every import
- Permitted calling hours enforced per campaign
- Disposition-driven recycling with configurable retry caps
- Lead scoring and priority weighting
- API/webhook sync with Salesforce, HubSpot, Zoho & LeadSquared
Predictive campaign
Home Loans – Pan India
Dialed
12.4 L
today
Connected
4.7 L
AMD skip
2.1 L
Abandon
1.8%
IVR Flow Builder
Design call flows in a drag-and-drop canvas — no dialplan coding required for business users. Developers can still inject custom Asterisk AGI or FreeSWITCH ESL for data dips, CRM lookups, or payment routing at any node.
- Visual drag-and-drop node editor
- TTS (gTTS, AWS Polly, Azure Neural) & STT (Whisper, Google)
- DTMF & voice input with NLP intent matching
- Live API data dips mid-call (balance check, OTP verify)
- Multi-language with per-caller language detection
Inbound DID
0120-4••• 210
Welcome
TTS · Hindi / English
Menu
Press 1 · 2 · 3
1 · Sales
Queue · 1,200 agents
2 · Support
Queue · 800 agents
3 · AI bot
2,000 channels · 24×7
After hours
Business-hours rule
Callback
Auto-scheduled
Inbound today 1,86,400Self-served 72%Avg wait 0:14
WebRTC Softphone
Agents take calls in Chrome or Edge — no plugin, no desktop app install. The softphone runs over TLS+SRTP and coexists on the same PBX as Yealink desk phones and Zoiper softphones. One dialplan, every endpoint.
- Works in Chrome, Edge, Firefox — no extension required
- TLS signalling + SRTP media — end-to-end encrypted
- Presence, transfer, hold, DTMF from the browser UI
- Works alongside Yealink, Grandstream, Cisco, Zoiper, MicroSIP
- CRM screen-pop opens automatically on inbound
Call with
+91 98•••• 4521
Campaign · Home Loans – Pan India
CRM · auto pop
Rahul Sharma
Noida, Sector 62
Loan ₹45 L · Salaried
Last remark: call after 5 pm
Disposition
SMS Gateway
Bulk, transactional, OTP, and 2-way SMS over SMPP/HTTP routes. Delivery reports come back in real time, and we help you set up DLT headers and templates.
- Bulk campaigns with scheduling & rate-cap controls
- OTP & transactional routes
- 2-way: inbound keywords trigger IVR or agent handoff
- DLR webhooks to your CRM or BI tool
- TRAI DLT compliant — PE ID, template hash tagging
Dialer
12.4 L
4.7 L connected
IVR
1.86 L
72% self-served
Voice bot
2.48 L
9,860 visits booked
Custom CRM
A purpose-built CRM for contact-center workflows — not a generic sales tool retrofitted with a dialer bolt-on. Pipeline stages, call pop, ticket management, role-based access, and REST APIs that connect to any system you already run.
- Call pop on inbound & predictive-connected calls
- Configurable lead pipeline with stage-based SLAs
- Ticketing with SLA timers & escalation rules
- Role-based access: Agent, TL, Supervisor, Admin
- REST API + webhooks for any downstream system
Logged in
5,000
On call
4,000
Ready
620
Break
380
Calls today 14.3 LConnect rate 38%Avg talk 3:12
Integrations
Connects to the tools your team already uses
Connect over REST APIs and webhooks for lead push, dispositions and call records. If you run a CRM we haven't listed, we build the connector as part of the project.
Bring your own CRM — we integrate it+ custom REST / SMPP / webhook integrations on request
Security & Compliance
Built for Indian compliance and data security
TRAI, DLT, DND and data-protection controls are part of every deployment, on cloud or on your own servers.
Data Residency
Deploy on your own cloud account (AWS, GCP, Azure) or our private cloud in India. Data stays in the region you choose, and with on-premise deployment it never leaves your network.
Encryption in Transit & at Rest
Encrypted signalling (SIP over TLS, HTTPS, WSS) and media (SRTP). Role-based access to call recordings, with retention periods you set per campaign.
TRAI, DLT & DND
Outbound SMS go out with your DLT-registered header and template. Call lists are scrubbed against DND/NCPR and your internal do-not-call list, and calls are held to permitted calling hours.
DPDP Act & Data Rights
Consent and call records are kept per campaign. Recordings, lead data and call logs can be deleted per customer on request, in line with the DPDP Act 2023. A DPA is available.
Deployment
Cloud, on-prem, or hybrid — your call
NSSSoft deploys the exact same software stack in all three modes. Choose based on your compliance posture, IT budget, and latency requirements.
| Feature | Cloud (SaaS) | On-Premise | Hybrid |
|---|---|---|---|
| Managed infrastructure | |||
| Data stays on your servers | |||
| CAPEX-zero (opex model) | |||
| Custom network integration | |||
| Runs fully inside your network | |||
| Auto-scaling burst capacity | |||
| Hardware CAPEX | |||
| Regulatory data residency | |||
| Time-to-deploy | Weeks | Weeks |