Installation manual

Duet2 D2600 / Duet3 D2650 Installation Manual – EU-D2600-D2650-INST/A10/v1 - 30
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APPENDIX 6
Glossary of Terms
ADSL Asynchronous Digital Subscriber Line
A ‘wideband’ digital communication service from a network provider to a
subscriber that carries a high volume of digital data, most commonly for
internet access. Sometimes called ‘broadband’. An ADSL service is often
provided with a simultaneous analogue PSTN service on a hybrid line.
Analogue PSTN Analogue Public Switched Telephone Network
The analogue national telephone system. Often just called the PSTN.
Service is available to customers on twisted-pair wires that carry a DC
supply provided from the network telephone exchange.
APN Access Point Name
Identifies an external network that is accessible from a mobile terminal.
E.g.The APN for Vodafone is “internet”.
ARC Alarm Receiving Centre
See ARS.
ARS Alarm Receiving Station
A 24 hour manned centre (often privately owned & operated) capable of
receiving and logging calls of alarm and forwarding them to security
authorities and other relevant services. Often called a central station.
Broadband
See ADSL.
Call Clearing
See 3-way-calling.
Call Minder
A call answering service offered by some telecomm Service Providers
where an incoming call to the subscriber’s telephone is not answered.
Central Station
See ARS.
CONTACT I D Contact Identification
An alarm reporting protocol of DTMF tones used to send via an Analogue
PSTN telephone network a transmission to receiving equipment at an
ARC, and to receive checking and acknowledgement replies from that
receiving equipment. The Contact ID protocol is commonly used in
burglar or intrusion alarm equipment. See also DCID.
Digital CONTACT ID Digital Contact Identification
An alarm reporting protocol of data used to send via an Analogue PSTN
telephone network or a digital data network, e.g. VDN, GPRS, GSM data,
a transmission to receiving equipment at an ARC, and to receive
checking and acknowledgement replies from that receiving equipment.
Digital PSTN Digital Public Switched Telephone Network
The digital national telephone system. Service is available to customers
on twisted-pair wires that carries a DC supply provided from the network
telephone exchange, on optical fibre or other digital transmission
medium. The digital service may be in ISDN format or another digital
format.
DTMF Dual Tone Multi Frequency
The series of tones used by telephones to send dialling information to an
analogue PSTN exchange. These tones are also used by the DTMF Fast
Format and Contact ID alarms reporting protocols.