SMS Hubbing & Interconnection
One interconnect that opens A2P and P2P SMS interworking to 800+ operators - SS7/SIGTRAN or SMPP, bilateral or hub-managed, with MNP resolution, revenue assurance and firewall-integrated monetisation.
800+
Operator connections
1
Interconnect for A2P and P2P
99.99%
Hub availability
What is SMS Hubbing & Interconnection?
International SMS interworking traditionally means negotiating, testing and maintaining hundreds of bilateral agreements, each with its own signalling link, commercial terms and settlement cycle. Dollu's SMS hub replaces that with a single interconnect. Connect once and your subscribers can exchange person-to-person messages with users on more than 800 operator networks, while enterprise A2P traffic destined for your network arrives over one controlled, monetised gateway. The service is designed for mobile network operators, MVNOs and MVNEs that want carrier-grade reach without a carrier-sized interconnect team.
Technically, the hub speaks the protocols your core already uses. P2P traffic interworks over SS7 MAP carried on SIGTRAN (M3UA over SCTP), with global-title hosting and translation for operators that do not yet hold their own international GT ranges. A2P traffic terminates over SMPP 3.4 or 5.0 binds into your SMSC or our hosted SMSC. Every message passes through mobile-number-portability resolution - HLR or national porting-database lookups, depending on the market - so messages to ported numbers are delivered to the current network rather than bounced or misrouted.
The commercial layer is as important as the signalling. Agreements can be bilateral, where Dollu brokers and manages the relationship in your name, or hub-managed, where you sign once with us and we take on the counterparties. Revenue assurance tooling reconciles MO and MT counts against partner reports, flags mismatches and detects grey-route and SIM-farm bypass into your network. Integrated with our SMS firewall, unauthorised A2P traffic is blocked or redirected onto official, billed routes so the revenue that used to leak through grey channels returns to you.
Operationally, the hub runs across geo-redundant nodes at our London, Frankfurt, Mumbai and Singapore PoPs with 99.99% availability, store-and-forward with configurable retry schedules, and full delivery-report handling in both directions. A 24×7 NOC monitors link health, message success rates and latency per partner, and monthly settlement and traffic reports are provided per counterparty. Our carrier-relations team handles onboarding, testing and dispute resolution with each partner network so your team can focus on subscribers.
Why choose Dollu for sms hubbing.
The advantages of buying from a carrier that owns its network, interconnects and operations - rather than a reseller.
Reach without hundreds of contracts
Open P2P and A2P interworking with 800+ networks through one agreement, one link and one settlement cycle instead of a bilateral programme that takes years to build.
Recover leaking A2P revenue
Firewall-integrated monetisation blocks or redirects grey-route enterprise traffic onto billed routes, turning bypass into recurring wholesale revenue.
Carrier-grade signalling, managed for you
SIGTRAN links, GT hosting, SCCP routing and SMPP binds are engineered, monitored and maintained by our team, backed by a 24×7 NOC.
Assurance and transparency
Per-partner MO/MT reconciliation, delivery-rate and latency reporting and monthly settlement statements give finance and regulatory teams a clear audit trail.
Faster launch for MVNOs and new entrants
Operators without an international interconnect team can be live with global P2P reach and A2P termination in weeks, using our hosted SMSC if needed.
Capabilities in detail.
Everything included with SMS Hubbing & Interconnection - the platform features, options and controls you get from day one.
- 01
P2P interworking
Bidirectional subscriber-to-subscriber SMS with 800+ networks over MAP; MO forwarding, MT delivery, SRI-for-SM handling and delivery-report relay in both directions.
- 02
A2P interconnection and termination
Enterprise and aggregator traffic to your subscribers arrives on controlled SMPP binds with per-sender registration, throughput caps and full billing records for wholesale settlement.
- 03
Signalling and interconnect options
SS7 MAP over SIGTRAN (M3UA/SCTP), SMPP 3.4/5.0 over TLS or IPsec, private IP or cross-connect at London, Frankfurt, Mumbai and Singapore PoPs; TDM SS7 via partner STPs.
- 04
Global-title hosting and SCCP routing
Use Dollu GT ranges if you hold none, or bring your own; SCCP global-title translation, screening and routing policies applied per partner and per traffic type.
- 05
MNP resolution
Real-time HLR or national porting-database lookup before routing, with cached results and daily updates in supported markets, so ported numbers are never misrouted.
- 06
Store-and-forward and retry
Configurable retry schedules and validity periods, alert-SC handling, priority queues for OTP-class traffic and per-partner throughput shaping.
- 07
Revenue assurance and reconciliation
Automated MO/MT count reconciliation against partner reports, mismatch alerts, grey-route and SIM-farm detection and dispute packs with message-level evidence.
- 08
Firewall-integrated monetisation
Works with the Dollu SMS firewall or your existing firewall to classify inbound A2P, block or redirect unauthorised traffic and bill it on official routes.
- 09
Reporting and settlement
Per-partner traffic, success-rate and latency dashboards, monthly settlement statements, invoice reconciliation and CDR export for your billing systems.
How it works.
From first conversation to live traffic - a tracked, engineer-led onboarding with a named owner at every step.
- Step 01
Assess and agree
We review your current interconnects, traffic mix, target destinations and monetisation goals, then agree the commercial model - bilateral, hub-managed or a mix.
- Step 02
Interconnect and test
Establish SIGTRAN or SMPP links, configure GT hosting and routing policies, and run interworking tests with an initial set of partner networks in both directions.
- Step 03
Open destinations
Bring partner networks live in waves. Our carrier-relations team handles onboarding and test-plan sign-off with each counterparty while you monitor success rates in the portal.
- Step 04
Monetise and assure
Enable firewall-integrated A2P monetisation, switch on MO/MT reconciliation and start receiving monthly settlement statements per partner.
- Step 05
Optimise
Quarterly reviews of routes, rates and traffic patterns with your carrier-relations manager; add destinations, adjust policies and expand bilateral relationships as you grow.
Direct, premium or grey.
Where an SMS route class shows up: in delivery, in the sender ID your customer sees, in the truthfulness of the delivery receipt and in the compliance risk you carry.
| Dimension | Direct operator | Premium aggregated | Grey routesNot offered by Dollu |
|---|---|---|---|
| Delivery | Direct SMPP bind to the mobile operator; the highest and most consistent delivery | Via a vetted hub or Tier-1 aggregator holding operator agreements; high delivery with occasional re-routing | Via SIM farms or unauthorised international paths; unpredictable, filtered and blocked without notice |
| Sender ID | Registered alphanumeric ID, short code or long number preserved exactly | Registered sender ID normally preserved; may be substituted on a few destinations | Overwritten with a random numeric sender; your brand is invisible |
| DLR quality | Handset delivery receipts from the operator | Operator or hub receipts; reliable, occasionally delayed | Fake or aggregator-generated receipts; no proof of delivery |
| Compliance risk | Lowest - operator-approved, with DLT, 10DLC or sender-ID registration completed up front | Low - operator agreements in place; Dollu vets every hub it uses | High - breaches operator terms and local law; carries fines, blacklisting and lost sender IDs |
| Price position | Highest per message; the lowest cost per delivered, verified message | Mid | Lowest headline price; the hidden cost is failed OTPs, blocked traffic and brand damage |
Dollu does not sell grey routes. Every destination on our deck is direct operator or premium aggregated, and the route class is shown against each price so you know exactly what you are buying.
Who uses this and why.
Typical deployments across carriers, enterprises, platforms and contact centres.
MNOs extending P2P reach
Fill gaps in international P2P coverage and retire costly low-volume bilaterals by moving them onto the hub, without changing the subscriber experience.
MVNOs and new entrants
Launch with global SMS reach and A2P termination from day one, using our GT ranges and hosted SMSC if you do not yet operate your own.
Operators monetising A2P
Combine hub, firewall and reconciliation to shut grey routes, register senders and bill every enterprise message that reaches your subscribers.
Operator groups consolidating interconnect
Aggregate the international SMS interconnect of multiple opcos onto one hub with group-level reporting and per-opco settlement.
MVNEs and IoT connectivity providers
Give hosted brands and IoT SIM fleets reliable global SMS with MNP-aware routing and per-tenant reporting.
Technical & commercial specifications.
Key parameters at a glance. Ask us for the full service description and SLA document.
| Reach | 800+ operator connections in 200+ countries |
|---|---|
| Signalling | SS7 MAP over SIGTRAN (M3UA/SCTP); SMPP 3.4 and 5.0 over TLS/IPsec |
| Interconnect | Private IP, IPsec, PoP cross-connect; TDM SS7 via partner STPs |
| Hub PoPs | London, Frankfurt, Mumbai, Singapore - geo-redundant |
| Services | International P2P, A2P termination, MO/MT interworking, DLR relay |
| MNP | HLR or porting-database resolution; cached with daily updates |
| Global titles | Dollu-hosted or customer GT ranges; SCCP translation and screening |
| Throughput | 5,000+ msg/s per link; scalable on request |
| Assurance | MO/MT reconciliation, grey-route detection, monthly settlement |
| Support | 24×7 NOC; P1 response ≤ 15 min; carrier-relations manager |
How Messaging is priced.
A2P, OTP and promotional SMS are priced per message by destination and route class - direct operator or premium aggregated. Wholesale SMPP decks for aggregators; RCS and WhatsApp per conversation or session.
We publish the model, not a public rate card - actual rates depend on destination, route class, volume and regulatory cost. See how every Dollu service is priced.
- Direct-operator and premium route tiers per destination
- Sender ID and DLT registration assistance included
- Volume-based discounts by monthly message count
- Two-way inbound priced per number
- RCS and WhatsApp Business per conversation or session
- Billing
- Per submitted message, itemised by destination and route; prepaid or postpaid
- Commitment
- None - month-to-month; volume commitments unlock better tiers
220+ destinations, 800+ operator connections.
Direct operator binds and premium aggregated routes into every major mobile network. Country guides explain the sender-ID rules, KYC and route options in the markets we are asked about most.
- Australia+61
- Brazil+55
- Canada+1
- France+33
- Germany+49
- Hong Kong+852
- India+91
- Mexico+52
- Netherlands+31
- Philippines+63
- Saudi Arabia+966
- Singapore+65
- South Africa+27
- United Arab Emirates+971
- United Kingdom+44
- United States+1
Sender-ID registration markets
In these destinations A2P traffic is scrubbed unless the sender is pre-registered. Dollu’s compliance desk prepares and submits the registrations before your first message.
- IndiaDLT entity, header and template registration
- UAESender IDs registered with e& and du under TDRA rules
- Saudi ArabiaSender IDs registered with stc, Mobily and Zain under CST rules
- SingaporeSMS Sender ID Registry (SSIR); UEN required
- PhilippinesSender-ID whitelisting with Globe, Smart and DITO
- United States10DLC brand and campaign registration
SMS Hubbing - your questions answered.
The questions customers and carriers ask us most often before they interconnect. If yours is not here, our team answers within one business day.
Still have a question?
Ask our solutions teamRelated services.
Services customers commonly combine with SMS Hubbing & Interconnection.
Talk to our carrier-relations team.
Share your current interconnect list and traffic profile and we will propose a hubbing model, destination plan and interconnect design within five business days.
