Technology & architecture

Follow the connection.
All the way through.

See how commercial systems, the service lifecycle and network functions connect an order to a working mobile service.

See the full system directory
Commercial & operational events Provisioning & signalling Data sessions & usage
Three connected layers

A clear architecture.
Down to the network.

Start at the customer-facing experience and follow the systems that turn an order into an active service.

Logical system map. Physical topology and interface selection depend on the network generation, carrier relationships and deployment design.

The end-to-end service lifecycle

What actually happens
after “buy now”.

Six steps connect the customer journey to the network — and bring usage back into the business.

01
CUSTOMER JOURNEY → BSS

An order establishes the service.

The selected product defines the destination, validity and charging model. The order connects the customer account to the service being requested.

ORDER · PRODUCT · CUSTOMER
02
SIM MANAGEMENT → PROVISIONING

A resource is assigned.

A profile or SIM resource is allocated from the appropriate pool. Digital delivery is coordinated with the relevant eSIM provisioning service.

ICCID · PROFILE ASSIGNMENT · INSTALLATION DETAILS
03
SUBSCRIBER DIRECTORY

The network identity is configured.

The subscriber identity and service template are provisioned. The commercial subscription and network-facing service now refer to the same connection.

IMSI · SERVICE TEMPLATE · SUBSCRIBER STATUS
04
DRA / STP → NETWORK SYSTEMS

Signalling reaches the right destination.

Network messages follow the configured Diameter or SS7 routing rules. The route and message handling reflect the interconnection arrangement.

REALM / HOST / APPID · GT / IMSI · ROUTE POLICY
05
GTP PROXY → PACKET CORE

A data session finds its path.

Session context selects the gateway path. Packet-core functions establish the session, apply the address allocation model and carry the data.

APN · VPLMN · RAT · GATEWAY GROUP · UE IP
06
NETWORK RECORDS → OCS / OPERATIONS

Usage closes the loop.

Usage records return to charging and reporting. Balances or allowances update, while lifecycle events can trigger customer notifications and operational follow-up.

CDR · RATING · BALANCE · WORKFLOW EVENT
The network route, explained

Different functions.
Clear responsibilities.

Signalling, session steering and packet forwarding solve different problems. The architecture keeps those responsibilities visible.

Subscriber / visited network
SIGNALLINGSS7 / DiameterDRA / STPHLR / HSS / UDM
DATA SESSIONGTP contextGTP ProxyPGW / SMF / UPF
Usage & session records → BSS / OCS & operational workflows
SIGNALLING

DRA / STP

Route network control messages, apply interconnection rules and handle identity-aware message adaptation.

Diameter criteria
Application ID, Host, Realm and IMSI
SS7 protocols
M3UA, M2UA, SCCP and MAP
Addressing & adaptation
GT / IMSI routing, IMSI mapping and configured AVP handling
IDENTITY

HLR / HSS / UDM

Maintain the subscriber-side service configuration used by the relevant network generation.

Identity model
Multiple IMSI resource configurations
Provisioning
Service templates and repeatable subscriber setup
Integration
REST-based provisioning and service-state coordination
STEERING

GTP Proxy

Put context-aware route selection between the session request and the gateway arrangement.

Protocol & mode
GTP v1 / v2; GTP-C-only or full proxy
Routing inputs
IMSI, APN, RAT type, VPLMN and MSISDN
Operations
Gateway groups, load balancing, redundancy, blacklist and signalling-storm controls
PACKET CORE

PGW / SMF / UPF

Provide the packet gateway, session-control and user-plane roles required by the deployment.

Architecture
NFV-oriented; roles selected for the network generation
Address resources
Dynamic and static UE IP pools
Operations
Session records, CDR management, high availability and backup

Select the subscriber, signalling and packet-core functions for the network generation and interfaces your deployment uses.

From network function to useful product.

Real-Time Network Switching combines supported identity, signalling and session decisions. App Whitelisting connects application dependencies to traffic policy. IoT brings those controls into a device lifecycle. Each use case is validated against the actual hardware, networks and commercial configuration.

Interfaces & shared records

The handoffs matter
as much as the modules.

Each system has a job. Shared records and explicit interfaces keep the customer journey intact between them.

Integration responsibilities across the service lifecycle
ConnectionWhat moves across itWhy the business needs it
Sales channel ↔ BSSProducts, orders, customer and subscription contextSell the right product and retain its commercial context.
BSS ↔ SIM managementResource requests, profile assignments and service statusTurn a purchase into a deliverable service.
Provisioning ↔ Subscriber directoryIMSI resources, service templates and provisioning resultsKeep the purchased service aligned with its network identity.
Network ↔ Signalling layerDiameter / SS7 messages and routing contextDirect control traffic to the appropriate network systems.
Session steering ↔ Packet coreSession context, gateway selection and forwarding statePut the connection on the intended data path.
Network records ↔ OCS / reportingUsage records, session identifiers and rated outcomesAccount for usage and support reconciliation.
Platform ↔ Customer operationsLifecycle events, balances and workflow outcomesGive support a clear view of what happened and what to do next.
KEY RECORDS

ICCID identifies the SIM resource. IMSI identifies the mobile subscriber. APN selects the data-network context. CDR records service or session activity for downstream operations.

From architecture to delivery

A deployment plan.
With the details attached.

The technical route starts with your use case and ends with a defined set of systems, interfaces and operational responsibilities.

01

Define the service.

Set the commercial and customer requirements before choosing the technical scope.

  • Markets and network relationships
  • Product and charging model
  • Digital or physical distribution
02

Connect the systems.

Map the enabled modules and the records that pass between them.

  • Resource and provisioning ownership
  • API and protocol boundaries
  • Usage and reconciliation flows
03

Validate the operation.

Test the journey and agree how it will be supported.

  • Order-to-activation checks
  • Session and charging validation
  • Failover and recovery scenarios

Planning a technical evaluation? Bring your network arrangement and integration requirements.

Talk through the architecture
Let’s build something

Your next product
could be mobile.

Tell us about your business. We’ll help you find the right way in.

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