Section 6 - Glossary Of Terms - DSC GSM 1000 Installation Manual

SECTION 6 - GLOSSARY OF TERMS

The following is a description of various terms used with regards to cellular technology.
GSM
The acronym GSM stands for Global System for Mobile telecommunications.
SIM card
It is a smart card called the Subscriber Identity Module. The SIM card provides personal mobility, so that
the user can have access to all subscribed services irrespective of both the location of the terminal and the
use of a specific terminal. By inserting the SIM card into another GSM cellular phone, the user is able to
receive calls at that phone, make calls from that phone, or receive other subscribed services. The mobile
equipment is uniquely identified by the International Mobile Equipment Identity (IMEI). The SIM card
contains the International Mobile Subscriber Identity (IMSI), identifying the subscriber, a secret key for
authentication, and other user information. The IMEI and the IMSI are independent, thereby providing
personal mobility. The SIM card can be protected against unauthorized use by a password or personal
identity number.
SIA
The acronym SIA stands for Security Industry Association. The SIA format is an alarm communication
format, in the form of a modem protocol, used by the DSC alarm control panels to transmit information to
the Monitoring Central Station.
Contact ID
It is an alarm communications format, composed of DTMF tones, used by the DSC alarm control panels to
transmit information to the monitoring station.
PIN
The acronym PIN stands for Personal Identification Number.
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