Saynth by AsteriskBD · since 2012

Answer every call.
Automate the rest.

AI voice agents that pick up 24/7 in English, Bangla and more. A white-label multi-tenant PBX for telcos and ISPs. Managed cloud telephony from $12/month. One team, built on Asterisk.

15+
years in VoIP
24/7
AI call answering
14
integrations
Trusted by
  • OrthoVoIP
  • AstraDial
  • EPDP
  • Dhaka International University
  • eshikhon
  • Mesh Technologies
Products

One platform for voice, from the trunk to the AI.

Use one piece or all of it. Everything runs on open SIP, so it fits around the phones, carriers and CRM you already have.

For telcos, ISPs & service providers

Saynth Multi-Tenant PBX

Run many business tenants on one platform under your own brand. Each gets isolated extensions, users, limits and features, with queues, IVR, recording, AI transcripts and phones that set themselves up.

White-labelAsterisk 20 · PJSIPLive wallboardAI transcriptsREST API & webhooks
Call-centre wallboard
Saynth PBX call-centre wallboard showing call counts, answer rate, sentiment, recent calls and text messages

Always on

AI Voice Agent

Answers instantly, books appointments, opens tickets and hands off to a person when it should. English, Bangla and more.

Hear it work

Outbound

Sales AI Ops

AI calling campaigns that qualify leads, book meetings, send reminders and run surveys, then write it all back to your CRM.

HubSpotSalesforceCalendlyZendesk
Details

For carriers

Telco AI Gateway

Put AI voice on any SIP trunk or switch you already run, with CDRs and live monitoring.

Your brand

White-label softphones

Branded apps for iOS, Android, macOS and Windows, with activation-code sign-in. In testing.

Done for you

IP PBX & call centres

Asterisk, FreePBX and VICIdial built, secured and run by people who have done it for 15 years.

Inside the PBX

Everything a modern phone system needs. Already built.

Asterisk 20 with PJSIP underneath, a Node.js API and a React portal on top. Every tenant is isolated: its own dialplan, endpoints, users, API keys and limits.

Full feature list

Queues & ring groups

Several queue strategies, agent pause states and callbacks.

IVR & visual call flows

Menus, announcements, time conditions with iCal calendar sync.

Recording & transcripts

Recordings to S3 or Azure with retention. Whisper transcripts on GPU.

AI insights

Sentiment and call summaries per call and voicemail, licensed per tenant.

Live wallboard & reports

Calls, queues, agents, usage, SMS and MOS call-quality scoring.

Phones that set themselves up

Auto-provisioning for Yealink, Grandstream, Fanvil, Snom and Sangoma.

SMS inbox

Carrier-backed two-way SMS per location, with inbound webhooks.

Presence & DND everywhere

BLF lamps, and Do Not Disturb that syncs across desk phone, app and portal.

REST API & webhooks

JWT or API-key auth, interactive docs, events for calls, voicemail and recordings.

Integrations

Plugs into the tools your team already uses.

The AI platform creates and updates CRM contacts, books meetings, opens tickets and posts alerts. Anything else connects through Zapier or our webhooks.

  • HHubSpot
  • SSalesforce
  • ZZendesk
  • CCalendly
  • GGmail
  • SSlack
  • MMicrosoft Teams
  • WWhatsApp
  • TTelegram
  • TTwilio
  • SStripe
  • ZZapier
  • OOpenAI
  • OOpenTable
How it works

From first call to live in three steps.

  1. 01

    Discovery call

    We map your call flows, numbers, CRM and goals, then send a fixed scope and price.

  2. 02

    Pilot on your numbers

    We set up the PBX or AI agent on a real line, tune the script and prove it on live calls.

  3. 03

    Go live, we run it

    Cut over with no downtime. Monitoring, updates and support stay with us.

Clients

Telcos and businesses in 28+ countries.

★★★★★
“As knowledgeable as it comes on PBX APIs and webhooks. Delivered the final code earlier than expected. Highly recommended!”
Ruchir Patel
OrthoVoIP · USA
★★★★★
“True professional, detailed, and only promises what can be achieved. Will definitely work with him again.”
Ginny Wan
AntunLink · Malaysia
★★★★★
“Excellent VoIP expertise and professional service. Delivered exactly what we needed for our enterprise communication system.”
M. Wiederstein
Comelio · Germany
FAQ

Questions, answered.

Something else? Ask us directly.

What does the AI voice agent actually do on a call?+

It answers in real time, understands natural speech, looks things up, books or reschedules appointments, creates tickets and hands the caller to a human when needed. It speaks English, Bangla and other languages, and every call gets a transcript and sentiment score.

Can I white-label the PBX and sell it to my own customers?+

Yes. Saynth PBX is built for telcos, ISPs and service providers. You run many business tenants on one platform under your brand, each with isolated extensions, users, limits and features, plus usage reports you can bill from.

Will it work with my existing phones, trunks or PBX?+

Yes. It is standard SIP on Asterisk 20. Bring your own SIP trunks and DIDs, auto-provision popular desk phones, or put the AI agent or Telco AI Gateway in front of the system you already have.

How much does it cost?+

Managed cloud PBX hosting starts at $12/month. AI agents, white-label platforms and call-centre projects are quoted after a short discovery call, so you only pay for what you use.

Where are you based, and do you support my time zone?+

Saynth is run by AsteriskBD from Dhaka, Bangladesh, and has served clients across the US, UK, Europe, the Middle East and Asia since 2012. Support is by ticket, WhatsApp and email.

Hear an AI agent answer your line.

Book a 20-minute demo. We'll show the PBX and an AI agent working on a real call, then scope your project.

Chat with us