Originally published December 2020. Refreshed April 2026 to reflect what has actually shipped across the industry — and what's coming next.
From "Years to Seconds" — Now the Baseline
When we first wrote this post in 2020, the thesis was simple: most carriers still ran wholesale manually, and a digital platform could take interconnection from years to seconds. Five years later, that's no longer a prediction. Carriers running on a carrier digital platform are routinely onboarding new partners, testing routes, and settling invoices in minutes instead of months.
What's changed since 2020 is the scope of what lives on these platforms. Voice, SMS and DID termination were the starting point. Today a single wholesale exchange covers eSIM, HLR, IoT connectivity, number intelligence, SMS firewalling, and — as of 2026 — native AI-agent access to all of it.
The Core: Voice, SMS and DIDs Stay the Spine
Voice, SMS and DID wholesale remain the largest volumes flowing through any wholesale exchange. What changed is how they're traded.
On the TelecomsXChange (TCXC) platform, CSPs sign up, authorise an IP, recharge a balance, and buy a route with a single click. SIP and SMPP interconnections are provisioned the moment payment clears — no paperwork, no NOC ticket queue. The same wallet and the same API handle both voice and messaging. CDR, SDR, and rate sheets are exposed through a single set of REST endpoints so buyers can reconcile and reroute programmatically.
Dynamic offers from sellers are published via a Market View API that lists every live rate across every destination — buyers' routing engines consume it in real time to pick the cheapest path that meets quality thresholds, without a human in the loop.
eSIM Exchange — What Was a Prediction Is Now Live
In the 2020 version of this post, we predicted "IoT SIM ordering and data provisioning will all be included in digital portals and APIs in the near future." That future is here.
The TCXC eSIM Exchange aggregates eSIM inventory from multiple suppliers behind a single API. Search, purchase, and top-up work the same way a CSP already buys voice termination: one wallet, one integration, one payment relationship. Suppliers include Airalo, with a catalog spanning 200+ countries — and the multi-vendor model means new suppliers appear in the catalog automatically as they're onboarded, with no integration changes on the CSP side.
This matters because eSIM is where new revenue is being earned in 2026: travel connectivity, device-bundled data plans, MVNO regional expansion, IoT deployments. The carriers winning here are the ones who integrated once and now resell multi-vendor eSIM inventory at scale — same margin mechanics as voice resale, just a newer product.
HLR and Number Intelligence on Tap
Real-time Home Location Register (HLR) lookups used to require a direct agreement with a lookup provider and bespoke integration. On the TCXC platform, HLR is a single API call — the same account, the same wallet, the same settlement flow as voice and SMS.
This makes number intelligence cheap enough to use inline: validate before sending an A2P SMS campaign, route a call only after confirming the destination is on-net for the carrier with the best rate, price-shop termination based on real MCC/MNC instead of guessing from the prefix. Number Score and Test Numbers APIs surface the same data for operations and fraud teams.
SMS Firewall and Messaging Security
A2P SMS volumes have grown every year since we first wrote this post; so has SMS fraud. Open Text Shield (OTS), our open-source SMS classification proxy, now speaks SMPP natively — it sits inline between the SMSC and the customer, flags phishing and scam traffic in real time, and blocks at the protocol level without forcing operators to re-architect their messaging pipeline. Write-up here.
IoT Connectivity as a Wholesale Product
IoT SIMs and IoT data are now sold the same way voice is sold — through the exchange, with transparent per-MB pricing, multi-operator fallback, and API-driven provisioning. A device fleet can be activated, tracked, and billed across dozens of MNOs without the CSP signing dozens of contracts.
AI, Machine Learning, and Autonomous Networks
The biggest change between 2020 and 2026 is the degree to which routing and pricing are now handled by software instead of humans.
The TCXC Autonomous Platform applies machine learning across every billable event — call attempts, SMS deliveries, DID activations — to detect route degradation, flag anomalous margin compression, and reassign traffic before operators notice a problem. "Least-cost routing" has given way to ML-driven routing that optimises on quality, regulatory constraints, and margin simultaneously. Fraud detection runs on the same data: suspicious CLI patterns, anomalous destination mixes, and billing anomalies are surfaced in seconds instead of discovered in the next month's reconciliation.
The net effect is that the wholesale function — which used to require a dedicated carrier-relations team — can now run with a much smaller operations footprint. The platform handles the heavy lifting; humans handle the exceptions.
MCP — AI Agents Speak Wholesale Telecom
Perhaps the most significant 2026 addition is direct AI-agent access to the exchange. The TCXC MCP Server exposes wholesale telecom primitives (price discovery, route testing, HLR lookup, eSIM purchase, number provisioning) through the Model Context Protocol, so AI agents from Claude, ChatGPT, and other LLM-based systems can transact directly.
Practical applications: an enterprise assistant books an eSIM for an employee's international trip without the employee filing a ticket; a procurement agent renegotiates termination rates automatically when the monthly rate sheet arrives; a fraud-response agent blocks a suspicious number range in seconds after seeing a spike. The agent isn't making the decision in a vacuum — it's calling the same APIs a human operator would, just orders of magnitude faster.
Choose Your Own Carrier — Embedded in Every App
Our earlier prediction that platforms like Microsoft Teams and Zoom would shift from "Bring Your Own Carrier" to "Choose Your Own Carrier" is playing out. Enterprises now select voice termination, SMS senders, and DIDs from a menu inside their UC application — the carrier side of that menu is the wholesale exchange. For CSPs that means: being listed on a major UC platform's CYOC catalog is now as important as having direct enterprise sales.
What's Next (2027–2030)
- Agentic commerce for wholesale. Expect AI agents to own ongoing carrier relationships — tuning rates, flagging quality issues, and settling invoices autonomously within rules their human operators set.
- Real-time multi-currency settlement. Monthly invoice cycles compress to daily or intra-day, with stable-coin rails and programmable escrow replacing SWIFT for inter-carrier payouts.
- Quantum-safe messaging and signalling. As post-quantum cryptography becomes table stakes, SIP and SMPP stacks will need to upgrade — the wholesale platforms that get there first will have a security-premium offering.
- Network APIs (CAMARA) going mainstream. Location, device status, SIM-swap detection and quality-on-demand exposed as wholesale products — sold the same way voice and SMS are sold today.
- Deeper ML on the routing layer. Routing decisions that today consider 10–20 features will consider 200+, including historical partner behaviour, weather/ outage correlation, and regulatory risk scores.
The Through-Line
What's consistent between 2020 and 2026 is the mechanism: one API, one wallet, one settlement process, across as many products and suppliers as possible. What's changed is how much now fits through that interface.
If you're a CSP evaluating where to invest operationally, the answer hasn't fundamentally changed — it's just expanded. Digitising voice and SMS was the 2020 imperative. Digitising eSIM, HLR, IoT, and AI-agent access is the 2026 one. The CSPs who did the first step well have a compressed path to the second.
For more on how TCXC can help modernise a carrier's wholesale operation, get in touch.
