Explore our library of thousands of telecoms terms and acronyms defined for on-the-job reference or learning new material.
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IM CN subsystem Charging Identifier
Identity
International Direct Dial
Idle Handoff
Idle mode or Idle State
Integrated Digital Network
Intrusion Detection System
IEEE 802.11ad
IEEE 802.11d
IEEE 802.16 Broadband Wireless Metropolitan Area Networks
Invoke ID
In Band Signalling
Infrared
Insured Burst
Insured Traffic
Integrated Circuit
Intra Base Station Frame Handler
Intra PLMN handover
Intra-Cell Handover
IP Address (IPv4)
IP Datagram
IP Flood
Internet Protocol Detail Record
Infrared Data Association
From 2–5 March 2026, meet the Mpirical team and explore industry-led telecoms training. Find us in Hall 4, Stand CS300