Stage 01 / 10
Reach
A button, a number, or your app
The customer taps "Call us" on your website and talks over the internet for free — or dials your Saudi number, which arrives over your own licensed SIP trunk.
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Self-hosted contact center · Arabic first
Every call, answered. Your contact center, on your own servers.
CHERT Bell takes every call from the moment a customer reaches you — from a button on your website or your own phone number — through a bilingual greeting, menu and queue to an agent's browser, then records it, transcribes it on your server and turns it into reports. No per-agent fees, no foreign cloud, in Arabic and English.
- Call stages
- 10
- Platform components
- 26
- Conversation signals
- 20
- Languages
- 2
Four seats, one platform
Everyone on the call has a place built for them
Callers need nothing but a browser or a phone. Agents and supervisors work in a browser tab. Administrators run the center from one page — no telephony console.
I am calling you
One tap on the "Call us" button on your website — free, no app, no phone number — or a normal call to your Saudi number. Greeted in Arabic and English.
I answer the calls
Log in, join your queues, answer in the browser with a headset. Pause for breaks, replay your recorded calls, switch to Arabic in one click.
I lead the team
A live wallboard of waiting callers, agents and calls; a 7-day profile for every agent; transcripts and weekly business reports from every conversation.
I run the center
Create agents and supervisors, shape the call menu, connect your SIP trunk and upload your own recorded prompts — from one bilingual admin page.
The life of a call
Every call takes the same journey. CHERT Bell runs all of it.
Ten stages, from the moment a customer reaches you to the report your manager reads. Select a stage to see what happens — and which parts of CHERT Bell make it work.
Stage 02 / 10
Greet
A human voice, in both languages
Every caller hears your welcome in Arabic, then English — recorded by real voices you own, never synthetic placeholders. Replace any prompt yourself from the admin page.
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Stage 03 / 10
Choose
The menu your business needs
With one queue, calls go straight through. Add a second and CHERT Bell switches to a menu — 1 for sales, 2 for support, 0 for an agent — with a keypad in the website button too.
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Stage 04 / 10
Queue
Waiting, without feeling forgotten
The caller waits in the chosen queue with music and a reassurance message every 30 seconds. If nobody can answer in time, a polite busy message closes the call.
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Stage 05 / 10
Ring
Only agents who are ready
Calls ring only agents who have joined the queue and are not on a break. Each agent has exactly one live registration, so a forgotten browser tab can never swallow a call.
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Stage 06 / 10
Talk
Crystal-clear, in the browser
The agent answers in the browser. Audio flows directly, or through CHERT Bell's own relay when an office network is strict. Mute, keypad and internal calls are one click away.
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Stage 07 / 10
Record
Two channels, one history
Each side of the conversation is recorded on its own channel next to the standard mix, and linked to the call history. Playback follows the logged-in user's rights.
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Stage 08 / 10
Transcribe
Layla listens — on your server
Layla turns each recording into a transcript labelled Agent and Customer, Arabic by default. Speech recognition runs on your own server; no audio is sent to any outside AI.
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Stage 09 / 10
Analyse
20 signals, with evidence
Every transcript is audited for 20 signals in 7 dimensions — purchase intent, churn risk, escalation, legal threats and more — plus 8 reasons customers call. Every flag quotes the words that raised it.
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Stage 10 / 10
Report
From the wallboard to the boardroom
Supervisors watch the day live; managers get weekly and monthly reports — revenue signals, a save list of at-risk customers, voice of the customer — to print or export.
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Ways in
However customers reach you, they reach the same team
Start with free web calling, add your own phone number when you are ready. Every channel lands in the same queues, the same workspace and the same reports.
- Website buttonWebRTC · free for the caller
- Saudi phone numberLicensed SIP trunk · STC preset
- Fixed business lineApproved gateway · Micro edition
- Your own appBrowser-phone SDK
CHERT Bellon your server- Greeting & menu
- Queues
- Recording
- Layla
- AgentsIn the browser
- SupervisorsLive board & reports
- Your dataStays on your server
CHERT Bell is not a telecommunications carrier. Public calling uses your own contract and numbers with a CST-licensed provider.
Interactive architecture
Every layer of a contact center — and the CHERT Bell component that runs it
Select any component to learn what it does, or play a journey and watch a call move through the platform.
Select a component or play a journey.
01
Channels & people
Where calls come in and where people work.
02
Contact-center core
The rules every call follows.
03
Voice engines
Proven open-source telephony, used unmodified behind CHERT's own interfaces.
04
Layla & insight
What every conversation teaches the business.
S
Security & identity
Every caller and user known; nothing open that need not be.
O
Operations
Install, protect, recover.
Details appear in the panel above the diagram.
Every function, at a glance
Everything a contact center needs — already in the product
No modules to bolt on. Every capability below is shipped, tested on a live server and shares one call history.
Calling
- Browser softphone — no desk phone needed
- Internal extensions and agent-to-agent calls
- Mute, keypad tones, hang up
- Inbound and outbound through your trunk
IVR & call flow
- Direct mode with a single queue
- Menu mode with a digit per queue
- Reorder announcements; script generated to record
- Invalid-input retries and safe fallbacks
Queues
- Sales, support or any queue you define
- Agents join, pause, resume and leave
- Hold message every 30 s, busy fallback
- One live registration per agent
Agent workspace
- Incoming banner shows caller and queue
- Registered → In queue → Paused states
- Last 20 calls, replay recordings
- Arabic / English, session restore
Supervisor board
- Waiting, active, ready, paused — every 5 s
- Received, answered, abandoned, average wait
- Live calls and every agent's state
- 7-day agent profile with charts
Recording & history
- Recording per user and per direction
- Agent and customer on separate channels
- Playback by the user's own rights
- Center-wide history for supervisors
Website call button
- One script tag, Arabic or English
- Free for callers: no minutes, no app
- Keypad for menu choices
- Works through strict office networks
Layla transcription
- Runs on your server — no outside AI
- Arabic by default, English supported
- Agent / Customer labelled transcripts
- Brand vocabulary for better accuracy
Conversation audit
- 20 signals in 7 dimensions
- 8 contact drivers: why people call
- Every flag quotes its evidence
- Lexicons editable per deployment
Reports
- Weekly and monthly business report
- Revenue from calls, save list, voice of customer
- Agent talk ratio and handling time
- Print-ready, CSV export
SIP trunks
- STC preset from the official manual
- Saudi numbers normalised to +966
- Emergency numbers always pass
- Save → dry-run → activate → status
Administration
- Create agents, supervisors, or both
- Extension, agent number, queues — automatic
- Reset, disable, delete; built-ins protected
- Audio prompts: play, replace, reset
Security
- Short-lived guest tokens, per-IP limits
- Website allow-list for the call button
- SIP open only to carrier addresses
- Automatic bans on SIP and SSH abuse
Operations
- One idempotent installer on Debian 12
- Daily backups, rehearsed restore
- Pinned voice core, frozen auto-updates
- Trunk acceptance test script
Layla · conversation intelligence
Every call becomes a row of business data
Most centers review 1–2% of calls. Layla reads all of them — on your own server — and tells sales, service and management what customers actually said.
SalesPurchase intent · Upsell opportunity · Price objection · Promotion mentioned
4RetentionChurn risk · Escalation demand · Threat to go public · Broken promise
4Customer experienceAnger · Praise · High customer effort · Callback request
4Agent performanceForbidden phrase · Knowledge gap · Recording notice given
3BrandTrust doubt · Wrong company
2CompetitionCompetitor mentioned
1Risk & complianceLegal threat · Abusive language
2Why customers call
8- Order status
- Returns & refunds
- Delivery issue
- Product defect
- Availability
- Billing & payment
- How-to
- Account
- TodayExplainable lexicons, counters and call math — on CPU, every call.
- NextLocal language models on a GPU host: summaries, sentiment, missed offers.
- With ERPSignals linked to money: did the upsell close, did the churner stay.
Inside CHERT Bell
The screens your team works in
Illustrative views of the shipped interfaces with sample data — every screen works in Arabic and English.
Editions
Start small. Grow without replacing anything.
Every edition includes the agent workspace, supervisor board, recording, queues, bilingual prompts and the website call button. Agents and phone lines are separate dimensions: fifty agents do not need fifty lines.
CHERT Bell
Connect
Outside callingWeb and app calls only — no phone line needed
- Website call button and browser workspace
- Capacity grows with your server and bandwidth
- No carrier subscription
- Best for
- Digital-first support, internal help desks
- Typical server
- 8 cores · 16 GB · 250 GB NVMe
CHERT Bell
Micro
Outside callingOne fixed business line + web calls
- Everything in Connect
- One line through an approved gateway
- Unlimited internal extensions
- Best for
- Micro-businesses and branches
- Typical server
- 8 cores · 16 GB · 250 GB NVMe
CHERT Bell
Business
Outside calling10-channel licensed SIP trunk
- Up to 50 configured agents
- Layla transcription and conversation audit
- Weekly business reports
- Best for
- Production contact centers
- Typical server
- 16 cores · 32–64 GB · mirrored NVMe
CHERT Bell
Enterprise
Outside callingRedundant carriers, multiple sites
- High-availability design
- Dedicated AI acceleration
- Capacity proven by load tests
- Best for
- Critical operations
- Typical server
- 3+ nodes for high availability
Carrier subscriptions are contracted directly between you and your licensed provider. Server sizes are starting points; final sizing follows concurrent calls, recording and transcription load.
Governed open source
CHERT's own experience, on proven open-source engines
The voice engines are used unmodified, version-pinned and licence-compliant. Everything your team sees — and the services that tie it together — is CHERT's own.
Voice core
Asterisk
SIP signalling, media, queues and recording — the most widely deployed open-source telephony engine.
GPL-2.0 · unmodifiedTelephony services
Wazo Platform
Identity, configuration, call control, agents, call logs and webhooks, driven through public APIs only.
GPL-3.0 · unmodified · pinnedMedia relay
coturn
TURN/STUN on your own domain with short-lived credentials for callers behind strict networks.
BSD-3-ClauseSpeech recognition
whisper.cpp
Layla's on-server transcription engine — Arabic and English, pinned model, no cloud.
MIT · pinnedBrowser phone
Wazo JS SDK
The WebRTC library behind the agent page and the call button, served from your server.
MIT · vendoredCHERT services
bell-guest · bell-admin · bell-layla
CHERT's own services: guest tokens and TURN credentials, credential-less administration, and Layla's worker and API.
© CHERTWhat comes next
Built in phases, in the open
These are planned and designed — not yet in the product. We list them so you know where CHERT Bell is going.
ChertERP integration Roadmap
Screen-pop of the customer, orders and open cases; leads and follow-ups created from the call.
Omnichannel inbox Roadmap
Web chat, e-mail and WhatsApp Business in the same workspace and timeline.
Mobile apps Roadmap
Android and iOS calling with push notifications for customers and agents.
Layla on GPU Roadmap
Local language models for call summaries, sentiment and missed-offer detection.
Listen, whisper, barge Roadmap
Supervisor live coaching where lawful and authorised.
Callbacks & outbound Roadmap
Scheduled callbacks and consent-controlled outbound lists.
Why CHERT Bell
A contact center you own, not one you rent
Your servers, your data
Calls, recordings, transcripts and customer history never leave your environment. No foreign cloud in the call path.
Arabic first
Right-to-left agent, supervisor, admin and caller experiences with full English parity — and transcription that defaults to Arabic.
No per-agent fees
License the platform, not every seat. Grow from two agents to fifty without renegotiating your bill.
Your carrier, your numbers
Keep your STC, Mobily or Salam lines and numbers. CHERT Bell connects to them — it never stands between you and your carrier.
Intelligence without the cloud
Layla transcribes and audits every call on your own hardware. Nothing is sent to an outside AI service.
Stable by design
Pinned engines, frozen auto-updates, rehearsed restores and acceptance tests — changes happen when you decide.
Hear it for yourself.
The demo center is a real, running CHERT Bell installation. Press the call button and an agent's browser rings — or tell us about your center and we will set up a walkthrough with your own flow.