From Network API Specification to Production: What Operators Need to Connect APIs to the Network

Standardising a Network API is an important first step. Deploying that API reliably within a real telecom environment requires another layer of architecture.

A production Network API platform needs to connect applications and developers to existing operator network infrastructure while maintaining security, policy, scalability, and reliable transaction processing.

What Does a Production Network API Architecture Look Like?

A simplified architecture can be represented as:

Application → API → Policy & Security → Network API Gateway → Telecom Signaling → Network Functions

The northbound interface can use standardised Network APIs developed through the CAMARA ecosystem and exposed through frameworks such as GSMA Open Gateway.

GSMA describes Open Gateway as a global framework of common Network APIs designed to provide developers and cloud providers with consistent access to mobile operator networks.

The southbound environment can be considerably more complex.

Depending on the operator and network function, existing infrastructure may include:

SS7/MAP | SIGTRAN | Diameter | HLR/AuC | HSS | AAA

Why the Gateway Matters

A Network API Gateway provides the interworking layer between these two worlds.

It can translate API requests into the appropriate telecom signaling transactions, manage transaction correlation, and return the result through the API interface.

The PAiCore Network API Gateway supports HTTP/REST, SS7/MAP, and Diameter interworking and uses an event-driven architecture to handle asynchronous telecom signaling workflows.

This architecture allows operators to expose network capabilities without requiring application developers to understand the underlying signaling protocols.

From Standardisation to Deployment

The Network API ecosystem is increasingly moving toward production deployment.

In March 2026, GSMA reported that 86 operator groups, representing more than 300 networks and 80% of global mobile connections, were aligned around a common API framework. GSMA also reported more than 60 channel partners commercialising Network APIs at scale.

As adoption expands, the focus increasingly shifts from:

“Can we define the API?”

to:

“Can we integrate it reliably with the network?”

That is where gateway infrastructure becomes critical.

The Production Architecture

Moving from a Network API specification to a production deployment requires more than defining the API contract.

A reliable implementation needs to account for:

• API standardisation and interoperability
• Authentication, security, and policy enforcement
• API routing and transaction management
• Protocol interworking
• Asynchronous signaling and response correlation
• Scalability and operational reliability
• Integration with existing network functions

GSMA’s OPG.10 Open Gateway Technical Realisation Guidelines provide implementation guidance for stakeholders involved in deploying and using Open Gateway, including MNOs, service aggregators, and technology partners. The current guidance covers areas including API call routing, onboarding, consumption, operational processes, and consent-related flows.

Connecting Modern APIs to Existing Networks

The architectural direction is becoming clearer:

Standardised APIs Northbound → Policy & Security → Network API Gateway → Telecom Signaling → Existing Network Functions

This separation allows operators to modernise how network capabilities are consumed without requiring the underlying telecom infrastructure to be completely rebuilt.

For developers, it provides a simpler API-based interface.

For operators, it creates a practical path to expose existing network capabilities through modern, standardised services.

Explore PAiCore Network API Gateway

The PAiCore Network API Gateway is designed to bridge modern API applications with telecom signaling environments through multi-protocol interworking.

Explore the PAiCore Network API Gateway →
 
Developers, telecom engineers, and technology partners can also explore the open-source project:

Explore the PAiCore Network API Gateway on GitHub → 

References

• GSMA Open Gateway
  
• What is GSMA Open Gateway?
  
• CAMARA API Overview
  
• GSMA OPG.10 – Open Gateway Technical Realisation Guidelines 
  

From Specification to Production

A standardised Network API defines how applications interact with network capabilities.

Production infrastructure determines how reliably those requests reach the network and return the right result.

The objective is not to replace existing telecom systems.

It is to make those systems accessible through secure, scalable, and standardised programmable interfaces.