# Learn how messaging really works. - Canonical URL: https://www.broadnet.me/academy - Language: en - Last updated: 2026-10-21 - Publisher: BroadNet (https://www.broadnet.me) - Markdown version of the page above, generated from the rendered page. Telecom Academy A structured, free learning hub for business messaging — from what CPaaS is to the SS7 signalling beneath it. Every course is built on public standards (GSM 03.38, SMPP 3.4, 3GPP, GSMA IR/FS) and the field knowledge behind operating carrier-grade messaging since 2003. No marketing fluff, just how it works. Browse courses [Answers & glossary](https://www.broadnet.me/answers) The curriculum **12** Structured courses **60** Lessons in total **~1h** Of reading **3** Levels, beginner to advanced Written by the BroadNet platform team and grounded in the standards themselves — updated when the specs change. ![Cinematic visualization of the BroadNet messaging network as a subject of study](https://www.broadnet.me/marketing/generated/viz-academy.png) BroadNet Academy ## The messaging network, taught from the wire up. From SMPP binds and A2P routing to SMS firewalls, OTP and omnichannel — operator-grade telecom knowledge, written by the engineers who run the network. 200+ Countries 1,000+ Operator connections 2003 Since Browse the curriculum Learning paths ## Start where you are. Courses are grouped into three levels. Begin with the foundations if messaging is new to you, or jump straight to the protocol, routing, and operator-security material if you already ship in production. Beginner Start here. The vocabulary and mental models behind business messaging, with no prior telecom knowledge assumed. [Beginner Foundations Introduction to CPaaS What a Communications Platform as a Service is, the building blocks it exposes, and how an API call becomes a message on a handset. 5 lessons 4 min](https://www.broadnet.me/academy/introduction-to-cpaas) [Beginner Foundations SMS Fundamentals How an SMS is built, encoded, and segmented — from the 160-character limit and GSM 03.38 to delivery receipts and A2P vs P2P. 5 lessons 4 min](https://www.broadnet.me/academy/sms-fundamentals) Intermediate Go deeper into the protocols, routing, and channels you will actually operate in production. [Intermediate Protocols SMPP Fundamentals The binary protocol behind high-volume SMS: bind types, submit_sm, PDUs, the transmit window, delivery receipts, and keepalives. 5 lessons 3 min](https://www.broadnet.me/academy/smpp-fundamentals) [Intermediate Routing & Quality SMS Routing & Least-Cost Routing How messages find a path to the destination network — direct routes, grey routes, least-cost routing, and quality-based failover. 5 lessons 4 min](https://www.broadnet.me/academy/sms-routing-and-least-cost-routing) [Intermediate Verification OTP & Number Verification How one-time passwords and number verification work — TOTP/HOTP, delivery channels and fallback, autofill conventions, and defending against AIT. 5 lessons 4 min](https://www.broadnet.me/academy/otp-and-number-verification) [Intermediate Channels Omnichannel Messaging Orchestrating SMS, WhatsApp, RCS, voice, and email as one conversation — channel capabilities, the WhatsApp 24-hour window, and fallback design. 5 lessons 4 min](https://www.broadnet.me/academy/omnichannel-messaging) [Intermediate Protocols SIP & Voice for Messaging Teams The signalling protocol behind programmable voice — SIP basics and methods, SDP/RTP/SRTP media, a call flow end to end, SIP trunking and the SBC, and where VoLTE fits. 5 lessons 5 min](https://www.broadnet.me/academy/sip-and-voice-for-messaging-teams) [Intermediate Channels RCS & Rich Messaging Rich business messaging beyond SMS — the RCS Universal Profile and MaaP, rich cards and interactive messaging, verified senders, WhatsApp Business, and channel fallback and orchestration. 5 lessons 5 min](https://www.broadnet.me/academy/rcs-and-rich-messaging) Advanced Operator-grade material — signalling, security, and the network internals beneath large-scale messaging. [Advanced Operator Security SMS Firewall & Operator Security How mobile operators protect messaging revenue and subscribers: firewall deployment modes, threat detection, home-routing, and A2P monetization. 5 lessons 3 min](https://www.broadnet.me/academy/sms-firewall-and-operator-security) [Advanced Signalling SS7 & Signaling Basics The signalling network beneath mobile messaging — SS7, the MAP protocol, SIGTRAN over IP, and the security concerns that shaped modern firewalls. 5 lessons 3 min](https://www.broadnet.me/academy/ss7-and-signaling-basics) [Advanced Signalling SIGTRAN & SS7 over IP How legacy SS7 signalling moved onto IP networks — an SS7 stack recap, why SIGTRAN exists, SCTP transport, the M3UA/M2PA/SUA adaptation layers, deployment architecture, and migration. 5 lessons 4 min](https://www.broadnet.me/academy/sigtran-and-ss7-over-ip) [Advanced Signalling Diameter Signaling Fundamentals The signalling protocol of 4G/LTE and IMS — the Diameter base protocol, AVPs, the S6a/HSS authentication interface, Gx/Gy policy and charging, Cx/IMS, and roaming DRA/DEA security. 5 lessons 5 min](https://www.broadnet.me/academy/diameter-signaling-fundamentals) One knowledge base ## Courses, answers, and tools reinforce each other. Each course links out to the glossary answers that define its terms, the products that put the concept into production, and the free calculators that let you try the numbers yourself. ### Answers & glossary Plain-language definitions of every term the courses use — from A2P to SS7 global titles. [Open the glossary](https://www.broadnet.me/answers) ### Products The A2P SMS, OTP, WhatsApp, RCS, and omnichannel products that turn the theory into delivery. [See the products](https://www.broadnet.me/products) ### Free developer tools Segment calculators, SMPP error lookups, DLR decoders, and TPS estimators to test as you learn. [Explore developer docs](https://www.broadnet.me/developers) From theory to production ## Ready to put a course into practice? When a concept clicks, the fastest way to lock it in is to build with it. Talk to our engineering team, or dive into the developer docs and send a real message. [Talk to engineering](https://www.broadnet.me/contact) [Developer docs](https://www.broadnet.me/developers)