Plain-language definition
SMS sent by a business system to a person: one-time passwords, bank alerts, delivery notices and marketing.
Technical definition
A2P traffic originates from an application (ESME) over SMPP or HTTP, or from an application-side SMSC, and terminates on a subscriber MSISDN. It is billed at commercial termination rates and is usually subject to sender-ID registration and content policy.
Why it matters
A2P is the revenue stream that grey routes and SIM boxes bypass, and the traffic class that most spam and smishing imitates.
Last reviewed 2026-09-12 by the Guardivia QoS Engineering Team. Product facts on this page describe current capabilities; items marked “where supported”, “optional”, “integration” or “consultancy” are confirmed per deployment.