Roaming Solutions

Steering of Roaming Platform

Put your roaming agreements to work — on 2G, 3G, 4G and 5G. PROTEI Steering of Roaming gives operators precise, flexible control over network selection, guiding outbound roamers to preferred partner networks to hit traffic commitments and protect roaming margins.

Registration control follows GSMA IR.73, the core guideline for steering services, strengthening the operator’s position with roaming partners and securing the required quality of service. A Diameter front-end extends steering to LTE roaming traffic, and the platform is 5G-ready, bringing the same control to 5G roaming.

Steering decisions combine multiple criteria — partner priority, roaming KPIs (successful registrations, unique subscribers per network, error rates), traffic distribution targets and consumption-based steering against the volumes committed with each partner. The platform also manages outbound roamer profiles, for example updating CAMEL profiles or disabling fraud-prone supplementary services, and built-in Border Roaming Prevention keeps subscribers on the home network while still in-country.

Integration with the PROTEI AI Engine adjusts roaming rules in near real time, reacting to live KPIs, consumption and traffic patterns so every agreement stays on target with minimal manual effort.

Real-time statistics and reporting give technical and commercial teams KPI monitoring, fast troubleshooting and deep insight into roaming trends through an intuitive web interface.

Multi IMSI Roaming Gateway

Instant global reach for MVNOs, challengers and IoT providers. PROTEI Multi-IMSI Roaming Gateway extends the roaming footprint of MVNOs and smaller operators by leveraging the agreements and subscriptions of established operators and roaming brokers — without negotiating hundreds of bilateral agreements.

The gateway supports both Dual-IMSI and dynamic Multi-IMSI roaming. Multi-IMSI dynamically loads an alternative subscription from the visited operator, giving roamers a local number and full local services — low-cost or free incoming calls, affordable outgoing calls and attractive data rates — while they remain reachable on their main number.

Gateway Location Register (GLR)

Hold on to every inbound roamer. PROTEI GLR captures each visitor’s profile at first registration and serves subsequent VLR requests locally, sharply reducing interrogations towards the home network. This shields visitors from home-operator steering and interoperability issues that can push them to a competitor — while cutting signaling costs.

Key benefits:

• Stronger roamer retention during home-network interrogation, short outages or coverage gaps
• Lower signaling volumes towards the SCCP provider
• Reduced exposure to home operators’ SoR systems
• Full compliance with ETSI TS 23.119 and GSMA rules — no extra signaling
• High efficiency in complex or segmented networks

Comprehensive statistics, CDRs and a web-based toolkit provide dedicated analytics for inbound roaming traffic.

Roaming Optimization Suite

More inbound roaming revenue, lower costs for visitors. The suite combines two subsystems. Roaming Optimization connects calls between two visitors in the same network locally, avoiding a costly voice loop through the home network — a better deal for roamers and more revenue for the visited operator.

The Visitor Retention Subsystem keeps visitors on the network during momentary issues such as coverage loss, using standard MAP Update/Cancel Location procedures. Both subsystems include full statistics, CDR generation and web-based roaming analytics.

PROTEI Roaming Guard

Human verified. Machine blocked. PROTEI Roaming Guard is inbound roaming access control that tells people from machines. Every inbound roamer is held on arrival until a real person confirms they are there through a simple, operator-branded browser check that takes under 30 seconds. IoT modules, SIM boxes and other automated devices cannot pass it and stay blocked for as long as your policy requires.

It works alongside your existing core with no changes to network elements or roaming agreements, and applies one policy from 2G to 5G NSA.

• Stops SIM-box fraud and unauthorized device use on inbound roaming
• Device blacklisting and a configurable waiting period for legitimate IoT
• Optional EIR check catches SIM swaps after clearance
• Time-stamped audit trail for regulators, session by session
• Active/standby resilience with sub-second failover

Border Roaming Gateway

No more accidental roaming bills near the border. Coverage gaps, outages or congestion can push handsets onto a neighboring country’s network, leaving subscribers with unexpected roaming and international charges — and operators with complaints and lost revenue.

PROTEI Border Roaming Gateway (BRG) keeps subscribers on the home network while they are still in their home country or zone, reducing complaints, raising service quality and protecting revenue for both operators and their customers.

SMS Welcome and Roaming Tariff Advisor

Make a great first impression the moment roamers land. “Welcome SMS” and “Bon Voyage SMS” engage both visitors and your own subscribers traveling abroad with useful information on the visited network, the country and key service prices.

Dynamic content, language selection by home country, flexible delivery scenarios and network or subscriber blacklists are supported, with SMSC connectivity over SMPP v3.4. Roaming Tariff Advisor adds location-based tariff information, reducing bill shock and churn.

Smart Roaming Dial

Every roamer call connects. PROTEI Smart Roaming Dial automatically corrects typical dialing errors made by roamers and gives them access to their home network’s short-number services while abroad — raising call success rates and operator revenue. Both inbound (ISUP-based) and outbound (CAMEL-based) roamers are supported.

Bill Shock Prevention Platform

Confident roamers, fewer disputes. PROTEI Bill Shock Prevention Platform tracks voice, SMS and data consumption of outbound roamers in near real time — through CAMEL control, TAP records or passive and active data monitoring — and alerts subscribers by SMS when configurable spending thresholds are reached. Operators can offer opt-in caps or block further usage, meeting regulatory spend-control obligations while protecting roaming revenue and customer trust.

Seamless Callback Platform

Every roamer can call home — at a lower cost. PROTEI Seamless Callback Platform turns outgoing roaming calls into incoming ones. Subscribers simply dial as usual: the platform intercepts the CAMEL call attempt, releases it and sets up two controlled call legs, so prepaid roamers can call even in networks without CAMEL roaming. Classic USSD and SMS callback are supported in parallel.

Signaling Insight

See every roaming transaction. Built on the PROTEI SigMonitor passive probe for TDM, SIGTRAN and Diameter links, the Tracer module filters SS7 and Diameter transactions by IMSI, MSISDN, Global Title, network or status, draws call flows and exports PCAP traces for fast troubleshooting. The MSU Analytics module counts message signal units per Point Code and Global Title for capacity planning and reconciliation with carriers and hubs.