Skip to content
Join the Live Open Session - Introduction to 5G, 27th October, 13:00 (UK Time). Free for Unlimited Access users | £95.00 for non-members
We’re attending MWC Barcelona 2026
From 2–5 March 2026, meet the Mpirical team and explore industry-led telecoms training. Find us in Hall 4, Stand CS300
Glossary header - telecoms antenna at height over fields

Glossary

Explore our library of thousands of telecoms terms and acronyms defined for on-the-job reference or learning new material.

# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Glossary Results

12 13 14 15 16 ...

HS-DPCCH

High Speed Dedicated Physical Control Channel

HS-DSCH RNTI

HS-DSCH Radio Network Temporary Identity

HS-SCCH

High SpeedShared Control Channel

HSCSD

High Speed Circuit Switched Data

HSN

Hopping Sequence Number

HSPA+

High Speed Packet Access+

HSS

Home Subscriber Server

HSSI

High Speed Serial Interface

HTS

High Throughput Satellite

I-CSCF

Interrogating - Call Session Control Function

I-SBC

Interconnect Session Border Controller

I2RS

Interface to Routing System

IBSS

Independent Basic Service Set

ICS

IMS Centralized Services

ICSI

IMS Communication Service Identifier

Idle mode or Idle State

Idle mode or Idle State

IDS

Intrusion Detection System

IEEE 802.11 Wireless

IEEE 802.11

IEEE 802.15 Wireless Personal Area Networks

IEEE 802.15 Wireless Personal Area Networks

IEEE 802.16 Broadband Wireless Metropolitan Area Networks

IEEE 802.16 Broadband Wireless Metropolitan Area Networks

12 13 14 15 16 ...