Glossary Of Terms - Centurion G-SPEAK Installation Manual

1. Glossary of Terms

Called Party:
When one of the Call Buttons on the Calling Module is pressed, the Called Party is the
person or persons who receives/answers the call on their mobile phone or landline
handset.
Calling Module:
This can be seen as similar to a traditional intercom gate station or entry panel that
resides outside of the property and is the component of the G-SPEAK system that is
used to dial through to and communicate with Voice Phones.
GSM Controller:
A module using GSM (Global System for Mobile Communications) technology to
communicate wirelessly with GSM-enabled handsets, allowing both audible
communication and monitoring and switching of inputs and outputs.
DTMF:
Dual Tone Multi-Frequency signalling. This is used for telecommunication signalling over
analogue telephone lines in the voice-frequency band between telephone handsets and
other communication devices and the switching centre. This allows the user to press 1, 2,
3 or 4 on his handset to switch any of the outputs on the G-SPEAK.
Voice Phone:
A Voice Phone pertains specifically to the intercom functionality of the G-SPEAK system,
and is any learned-in phone with the ability to communicate audibly with the Calling
Module, but is also capable of activating any of the outputs during a call using DTMF
signalling.
Switch Phone:
A Switch Phone is a learned-in phone that is capable of exercising some influence upon
the outputs of the controller via GSM switching and does not necessarily possess Voice
Phone functionality, though it can be learned in for both.
Channel:
An electrical gateway implemented as a physical terminal on the G-SPEAK that provides
the external interface to input or output signals.
Hang Time:
The time for which the call remains connected after a DTMF event.
Filter Time:
Filter Time is defined as the minimum time that the signal must be asserted before it is
seen as valid. For example, if an input is configured to send a notification upon a falling
edge signal being asserted - say, when mains power to an irrigation system fails - and
the Filter Time has been set to ten seconds, the notification will only be sent if the falling
edge signal has been present for at least ten seconds.
Blanking Time:
This refers to the minimum or 'cool down' period before an asserted input will respond to
any subsequent assertions. For example, an input's Blanking Time has been set to one
hour and the input gets asserted and sends an SMS notification. One minute later, the
input is asserted again. This second assertion will be ignored until an hour has passed.
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