Agent Fabric · A2A-T Runtime · TM Forum Catalyst C26.0.910

What this is

A2A is how agents talk.
A2A-T is how they understand telecom.

Autonomous Networks Level 4 is achievable. The harder problem is keeping it there — safely, trusted, and business-focused — across multi-vendor agent estates.

Agent Fabric is the runtime where AI agents from any vendor discover each other, coordinate work, follow the operator’s process, and prove what they did. It is built on A2A-T, the telecom extension to the Linux Foundation Agent-to-Agent protocol, specified in TM Forum IG1453 and contributed back as open source.

A2A-T replaces unpredictable natural-language agent chatter with structured, auditable, low-latency exchanges across three profiles: Task-T, Event-T, and Negotiation-T. Around the runtime sits an Agent Registry, a Prompt Registry, a Governance Agent, and an operator BPMN-to-Task-T translation layer that turns years of encoded institutional process into agent-executable work.

Agent Fabric contributes a Digital Twin implementation of the Service Fault Management High-Value Scenario, plus two net-new HVS — Enterprise Complaint Handling and Enterprise Service Fulfillment — back to TM Forum’s IG1339 v2.4.0.

The architecture is centralised in governance and federated in execution. Vendors keep their agents. Operators keep their authority.

Why This Catalyst Matters

The Business Case.

85% of CIOs say explainability gaps have already blocked AI from production. The industry needs an open protocol, an open runtime, and a governance fabric — not another agent product.

For CSPs

Defensible autonomy at last.

Operators are under board pressure to prove AI ROI, with regulators requiring traceability within 12 months. A2A-T gives operators their own processes as the foundation — workflows compiled into agent tasks. Every decision produces an evidence chain.

MTTR cut 80% · NOC FTE reduced 60–70% · Provable, not asserted

70% of CIOs face AI audit mandates within 12 months

For Vendors

Open protocol ends the integration tax.

74% of CIOs regret at least one AI vendor selection in the past 18 months. The root cause is lock-in. A2A-T, grounded in Linux Foundation open source, means any vendor’s agent registers once and interoperates across the entire fabric.

7 partners · One protocol · New agents integrated in days, not quarters

74% regret their AI vendor choice — open wins

For SIs & Consultants

A framework clients can buy and deploy.

82% of CIOs say agents are built faster than IT can govern them. Consultants need a standards-backed governance blueprint deployable as an overlay on existing OSS/BSS — with no replatforming.

IG1453 + IG1501 ROI model · Validated by 18 CSPs · 3× ROI by Year 3

3× ROI by Year 3 — no replatforming required

80%

MTTR Reduction

3+ hrs → under 1 hr, zero handoffs

60–70%

NOC FTE per Fault

Validated proxy metric vs IOH

Weeks → Hours

Enterprise Fulfilment

Access, transport, third-party

18 CSPs

Community Coverage

7 vendors · 1 protocol · 0 bespoke integrations

Architecture at a Glance

Three layers.
One production system.

Agent Fabric, OpenAN, A2A-T — the three terms get used interchangeably. They aren’t. Each layer does a distinct job, and each is open.

Agent Fabric (The Production System)

OpenAN + Trusted Data Gateway + Governance Agent + Audit + Eval + XAI

OpenAN (The Open-Source Core)

Registry Center + Orchestration Center + Knowledge Graph. Any operator can run it, contribute to it.

A2A-T (The Protocol)

Telecom extension of LF A2A. What agents say to each other — and what it means.

The Catalyst = Agent Fabric + 7 vendor agents + 3 live HVS scenarios

The Fabric

Five arcs.
One coherent runtime.

How A2A-T, the registries, the process layer, and the governance layer come together to deliver trusted autonomy at production scale.

01 · Arc

◇

Protocol

A2A-T runtime: Task-T, Event-T, Negotiation-T. Structured, low-latency, auditable inter-agent communication. Open sourced via Linux Foundation.

02 · Arc

◉

Semantics

Prompt Registry with structured, versioned prompts. Every agent gets the right telecom context every time. Deterministic where it matters.

03 · Arc

⬢

Multi-Vendor

Agent Registry with Agent Cards, skills, and onboarding trust. Agents from any vendor are discoverable and coordinated without bespoke integration.

04 · Arc

△

Process

BPMN-to-Task-T translation. Operator processes — the institutional knowledge encoded over years — become agent-executable work. Governance stays with the operator.

05 · Arc

⬣

Trust

Audit, Governance Agent, agent evaluation, and explainability are fabric-level capabilities. Not bolt-ons. Autonomy you can prove.

Autonomous Network Levels

Where Agent Fabric operates.

The TM Forum AN Level taxonomy. Agent Fabric targets the L3→L4 transition where multi-agent cross-domain coordination becomes mandatory and intent meets agents.

Manual

Human operators perform every task. No automation.

Assisted

Tools assist humans. Operators decide and act.

Partial Autonomy

Systems execute closed loops under defined conditions. Humans supervise.

Conditional Autonomy

Self-configuring under specified conditions. Predictive operation begins.

High Autonomy

Intent-driven, agent-coordinated, cross-domain. Operators set policy. Agents execute.

Agent Fabric target

Full Autonomy

Self-generated intent. The network reasons about its own goals.

Operational Proof

One integrated demo.
Three scenarios. Ten capabilities.

The integrated demo shows the full fabric in motion. Operational-proof scenarios anchor outcomes against TM Forum High-Value Scenarios. Capability demos isolate each component.

Integrated Demo

Agent Fabric — End-to-End

The full system in motion. Seven vendor agents, three HVS scenarios, one fabric.

Full team · All vendors · All champions

High-Value Scenarios

HVS · 01

Service Fault Management

Autonomous fault resolution spanning multiple coordinated agents across RAN and Transport domains. End-to-end, agent-coordinated, no human handoffs.

Digital Twin implementation · IG1339 v2.4.0

HVS · 02

Enterprise Complaint Handling

SLA breach triggers cross-layer resolution. Business-layer and service-layer agents collaborate to root-cause, remediate, and close with structured outcomes including SLA credit.

Net-new HVS · Contribution to IG1339 v2.4.0

HVS · 03

Enterprise Service Fulfillment

Internal and external agents coordinate autonomous provisioning across access and transport layers. Compressed timelines, third-party agents in the loop, no manual orchestration.

Net-new HVS · Contribution to IG1339 v2.4.0

Capability Demos

Open Source · LF

A2A-T Protocol

Telecom-grade agent communication

Huawei

Open Source · LF

OpenAN E2E Open Demo

Open-source orchestration runtime

Huawei

Digital Twin

HVS1 Service Fault Management

Multi-agent resolution on Digital Twin

Amdocs

Process → Task-T

Operator BPMN, deterministic execution

MEF.DEV

Agent Eval (Design Time)

Trust scored before deployment

Iquall Networks

Explainability

Agent decisions traced

Infosys

Transport Observability

Cross-domain visibility

Infovista

Governance in Motion

Constraints honoured at runtime

RADCOM

SID Ontology

TM Forum SID as OWL knowledge graph, queryable via SPARQL and MCP

Huawei

Knowledge Graph

AN Ontology / Knowledge Graph

AN use cases as knowledge graph, MCP-accessible

Vodafone + Huawei

The Specification

Built on open standards.
Contributed back.

A2A-T extends the Linux Foundation Agent-to-Agent protocol with three telecom profiles. It carries existing intent vocabulary — TMF921, 3GPP TS 28.312 — rather than replacing it. Specifications are open. The proto is on GitHub. The realisation guide is published by TM Forum.

The Three Profiles

Task-T

Assigns tasks with deterministic execution via structured prompts. Carries natural language, 3GPP intent, or hybrid payloads. The workhorse of A2A-T.

Event-T

Proactive event notification during and after task execution. Subscribe-publish semantics for agent-to-agent telemetry and lifecycle awareness.

Negotiation-T

Resolves ambiguity, feasibility, and information gaps before or during Task-T. Not version negotiation. Not protocol switching. Multi-round dialogue with a defined outcome contract.

Built in the Open

Open Source & Contributions.

Phase III contributes upstream to the Linux Foundation A2A project and ships its core runtime, registries, protocol SDK, and ontologies as public repositories. Core repos go public around DTW 2026 as they graduate.

A2A/issues/1796 ↗

A2A-T extension proposal upstream to the Linux Foundation A2A project. The formal contribution path for Task-T, Event-T, and Negotiation-T as a telecom extension.

Upstream · LF A2A

phase3

Catalyst Phase III monorepo: integrated runtime, demos, and orchestration assets.

Going public · DTW 2026

A2A-T

A2A-T protocol SDK. Reference implementation of the three telecom profiles.

Going public · DTW 2026

sid-ontology

TM Forum SID Information Model expressed as a formal OWL knowledge graph. Derived from MODA 25.5. Queryable via SPARQL and MCP.

Going public · DTW 2026

c-kg

Autonomous Networks knowledge graph with a decoupled OWL ontology. Use-case accessible through an MCP server.

Going public · DTW 2026

TM Forum Asset Map

Every guide this Catalyst draws on,
contributes to, or carries.

Agent Fabric is grounded in TM Forum’s published asset family for Autonomous Networks, Intent, and Agentic Trust. It does not invent in isolation.

Asset	Role	Relationship
IG1453 v2.1.0	A2A-T Specification	Authored
IG1453A v1.1.0	A2A-T Realisation Guide	Authored
IG1339 v2.4.0	AN HVS Map	Contributing · 1 Twin + 2 net-new HVS
GB1087 v2.0.0	Agentic Interaction Security in Telecoms	Aligned to
IG1251	AN Reference Architecture	Anchor
IG1251C	AN Agentic Architecture	Anchor
IG1251D	Agent Anatomy	Anchor
IG1251E	Multi-Agent Systems	Anchor
IG1358	Intent-Based Operation User Guide	Referenced
IG1218F	AN Framework	Referenced
IG1457	AN Journey	Referenced
TMF921	Intent Management API	Carried
TMF641 / 621 / 642	Service Management APIs	Carried
TIO	TM Forum Intent Ontology	Carried
3GPP TS 28.312	Intent NRM (Rel-19)	Carried
LF A2A	Base Protocol	Extends & Contributes

The Community

Eighteen CSPs.
Seven vendors. One academic partner.

Agent Fabric is a multi-stakeholder project. Champions shape direction. Vendors build the runtime. The University of Milan anchors the academic research underpinning the Trust arc.

CSP Champions

Orange Telefónica Deutsche Telekom Vodafone TIM e& Almadar Telenor AIS NOS Vodafone Deutschland Zain LG U+ China Unicom MTN China Mobile Ooredoo Indosat Ooredoo Hutchison

Vendors

Huawei Amdocs RADCOM MEF.DEV Infosys Infovista Iquall Networks

Academic Trust Partner

Università degli Studi di Milano · Department of Computer Science

Research led by Prof. Marco Anisetti, with collaborators Prof. Claudio Ardagna and Marco Luzzara.

The team’s work spans continuous trust certification, Trustworthy AI, behavioural trust evaluation, and verification of complex digital ecosystems — including LLM-based and regulated systems. Provides the academic foundation underpinning Agent Fabric’s Trust arc.

Profile at UNIMI ↗

Get Involved

Read the spec.
Run the runtime.
Join the community.

The Specification

IG1453 v2.1.0 defines the A2A-T protocol. IG1453A v1.1.0 is the realisation guide. Both are published through TM Forum.

TM Forum Publications →

The Catalyst

C26.0.910 is the third phase of the Agent Fabric Catalyst. Live demonstration at DTW Ignite 2026 in Copenhagen.

Catalyst Space →

Contact

For collaboration enquiries, partnership opportunities, or to join the community, reach the project lead.

Contact Project Lead →

Open Source

The A2A-T extension proposal is live on the Linux Foundation A2A project. Core repositories graduate around DTW 2026.

Linux Foundation A2A →

A2A is how agents talk.A2A-T is how they understand telecom.

The Business Case.

Defensible autonomy at last.

Open protocol ends the integration tax.

A framework clients can buy and deploy.

Three layers.One production system.

Five arcs.One coherent runtime.

Protocol

Semantics

Multi-Vendor

Process

Trust

Where Agent Fabric operates.

Manual

Assisted

Partial Autonomy

Conditional Autonomy

High Autonomy

Full Autonomy

One integrated demo.Three scenarios. Ten capabilities.

Agent Fabric — End-to-End

Service Fault Management

Enterprise Complaint Handling

Enterprise Service Fulfillment

A2A-T Protocol

OpenAN E2E Open Demo

HVS1 Service Fault Management

Process → Task-T

Agent Eval (Design Time)

Explainability

Transport Observability

Governance in Motion

SID Ontology

AN Ontology / Knowledge Graph

Built on open standards.Contributed back.

Open Source & Contributions.

Every guide this Catalyst draws on,contributes to, or carries.

Eighteen CSPs.Seven vendors. One academic partner.

CSP Champions

Vendors

Academic Trust Partner

Università degli Studi di Milano · Department of Computer Science

Read the spec.Run the runtime.Join the community.

The Specification

The Catalyst

Contact

Open Source

A2A is how agents talk.
A2A-T is how they understand telecom.

Three layers.
One production system.

Five arcs.
One coherent runtime.

One integrated demo.
Three scenarios. Ten capabilities.

Built on open standards.
Contributed back.

Every guide this Catalyst draws on,
contributes to, or carries.

Eighteen CSPs.
Seven vendors. One academic partner.

Read the spec.
Run the runtime.
Join the community.