What is the VoIP platform built on?

Asterisk, the open-source telephony engine, handles SIP signalling and media. On top of it runs AnvesionTech's own control application, which talks to Asterisk over ARI (the Asterisk REST Interface) and manages the entire communication: call control, routing logic, who can call whom, groups and day-to-day operations.

Is it only for railways?

No. A railway's entire internal voice communication runs on it today, and the same platform is reusable for call centres, BPOs, manufacturing plants, edge and remote sites, and any organisation that wants its own private internal communication system.

How does the 2 + 2 server redundancy work?

The platform runs on two redundant server pairs. Every server has a partner, so if one server fails, communication continues on its pair and there is no single point of failure in the server layer. We design the exact redundancy layout with you for your sites.

Is it on-premise, or a cloud service?

It is on-premise VoIP. The servers run in your own data centre or sites, on your network, so call audio, recordings and call logs stay with you. There is no per-seat cloud subscription to rent.

Which phones and devices does it work with?

It is built on SIP, the open standard for VoIP, so it works with standard SIP desk phones, softphones and SIP gateways. We confirm specific models and gateways for your environment during planning.

Can it integrate with our CRM or ticketing system?

Yes. Because the control layer is built on ARI, call events and actions are available to our application, so workflows can be customised, for example to connect calls with your CRM, ticketing or in-house systems through APIs.

Enterprise VoIP communication system Communication that keeps the railways talking.

We built the VoIP communication system that runs a railway's entire internal voice network: Asterisk underneath, our own control application on top, on 2 + 2 redundant servers. The same enterprise VoIP solution now serves call centres, BPOs, plants and remote sites.

Plan your system See the architecture

Asterisk + ARI
Open SIP
2 + 2 redundant servers
Self-hosted

Control room

Station A

Station B

Depot

Field site

Yard

Delivered · railway communication system

Proven where calls cannot wait.

A railway's entire internal voice communication runs on this platform: one system for the people who keep trains, stations and operations moving.

01The challenge: Internal voice across a railway's stations, control rooms and sites had to live on one system, on the railway's own network, and keep working when hardware fails.
02What we built: A complete VoIP communication system: Asterisk for SIP signalling and media, and our own control application on top, over ARI, managing call control, routing, permissions and groups.
03The result: The railway's whole internal voice communication now runs on it, on 2 + 2 redundant servers with no single point of failure in the server layer.

AsteriskOpen-source telephony engine
ARIOur control layer's interface
2 + 2Redundant servers
On-premYour network, your data

Architecture · Asterisk ARI

Asterisk underneath. Our control layer on top.

Layer 1 · Endpoints

Any standard SIP device.

Desk phones, softphones on PCs and mobiles, and SIP gateways that connect existing lines and analogue equipment.

Layer 2 · Asterisk

Asterisk carries the call.

The open-source telephony engine handles SIP signalling and media: setting calls up, moving the audio, bridging parties.

Layer 3 · Control application

Our application decides.

AnvesionTech's control application talks to Asterisk over ARI and manages the entire communication: call control, routing, who can call whom, groups and operations.

Layer 4 · Console & integrations

Run it, see it, connect it.

Administrators manage users, groups and routing from one console, watch live dashboards and call logs, and connect CRM or ticketing through APIs.

01Endpoints

Desk phones
Softphones
Gateways

SIP signalling · RTP media

02Asterisk

Open-source telephony engine

ARI · Asterisk REST Interface

03AnvesionTech control app

Call control
Routing
Who can call whom
Groups
Operations

Console · APIs

04Admin console & integrations

Dashboards
Call logs
CRM · ticketing

Redundant VoIP

2 + 2 redundant servers. No single point of failure.

Normal operation

Two pairs. Every server has a partner.

The platform runs on 2 + 2 redundant servers: two pairs, so no single machine holds up anyone's calls.

A server fails

Hardware fails. Plan for it.

A disk, a power supply or a whole machine can go down. Here, server 1A stops responding.

Calls continue

Its pair keeps everyone talking.

Communication continues on server 1B, so stations and control rooms stay reachable. Once repaired, 1A rejoins its pair.

Control Stations Offices Sites

Pair 1

1A OKDown

1B OKCarrying

Pair 2

2A OK

2B OK

All four servers healthyServer 1A downCalls continue on 1B

Capabilities

An IP PBX for call centres and control rooms, built on Asterisk.

Standard telephony features from Asterisk, shaped by our control layer into the system your teams need. Each deployment is configured to your requirements.

IVR menus

Voice menus route callers to the right team, extension or queue.

Queues & agent routing

Queues hold callers and route them to available agents in contact centres.

Hotlines & group calls

Priority hotlines and group calls for operational teams.

Ring & hunt groups

Ring a team at once, or hunt through members until someone answers.

Conference bridges

Bridges for planned meetings and quick multi-party calls.

Call recording

Record calls by policy, stored on your own servers.

Voicemail

Personal and group mailboxes for when nobody can answer.

Extensions & directory

Extension dialling and a shared directory across every site.

SIP endpoints

Desk phones, softphones and gateways on open SIP.

Who can call whom

Calling permissions per user, group or location, set centrally.

Live dashboards & CDR

See calls, queues and endpoints live, with a call log (CDR) for every call.

APIs & integrations

Our ARI-based control layer lets workflows connect to CRM, ticketing or in-house systems.

Use cases

One platform, wherever people need to talk.

Railways Delivered
The railway's entire internal voice communication, on one system.
Call centres
Queues, IVR and agent routing on infrastructure you own.
BPOs
BPO telephony with client-specific queues, recording and call logs.
Manufacturing plants
Shop floor, control room and offices on one internal network.
Edge & remote sites
Remote locations on the same private system as headquarters.
Enterprise internal comms
A private internal phone system you own, not rent.

Why AnvesionTech

Your communication system, not a rented one.

On-premise VoIP that follows the same principle as DeviceManager, SecureOS and Sovereign ZTNA: it runs on your servers, on your network.

Explore our other custom solutions

Self-hosted, on your network
Servers in your data centre or sites. Call audio, recordings and logs stay with you.
Open standards
Built on SIP and Asterisk, so you choose the desk phones, softphones and gateways.
No per-seat cloud lock-in
You own the deployment instead of renting seats from a hosted telephony provider.
A control layer shaped to you
Because it is ARI-based, routing, permissions and workflows follow how you operate.
Supported by the team that built it
The engineers behind the railway system plan, deploy and support yours.

FAQ

Questions about the VoIP platform.

What is the VoIP platform built on?: Asterisk, the open-source telephony engine, handles SIP signalling and media. On top of it runs AnvesionTech's own control application, which talks to Asterisk over ARI (the Asterisk REST Interface) and manages the entire communication: call control, routing logic, who can call whom, groups and day-to-day operations.
Is it only for railways?: No. A railway's entire internal voice communication runs on it today, and the same platform is reusable for call centres, BPOs, manufacturing plants, edge and remote sites, and any organisation that wants its own private internal communication system.
How does the 2 + 2 server redundancy work?: The platform runs on two redundant server pairs. Every server has a partner, so if one server fails, communication continues on its pair and there is no single point of failure in the server layer. We design the exact redundancy layout with you for your sites.
Is it on-premise, or a cloud service?: It is on-premise VoIP. The servers run in your own data centre or sites, on your network, so call audio, recordings and call logs stay with you. There is no per-seat cloud subscription to rent.
Which phones and devices does it work with?: It is built on SIP, the open standard for VoIP, so it works with standard SIP desk phones, softphones and SIP gateways. We confirm specific models and gateways for your environment during planning.
Can it integrate with our CRM or ticketing system?: Yes. Because the control layer is built on ARI, call events and actions are available to our application, so workflows can be customised, for example to connect calls with your CRM, ticketing or in-house systems through APIs.

Let's talk

Plan your communication system with us.

Share your sites, teams and call flows. We will propose an architecture, a redundancy design and a rollout plan for your own VoIP platform.

Talk to our VoIP team

Call us+91 93244 18175 Email usinfo@anvesiontech.com

Sales sales@anvesiontech.comSupport support@anvesiontech.com