| M2M
(Machine To Machine) Data Communications
At the heart
of all M2M solutions is the ability to send meaningful data from
one point to another, typically from a machine to a machine. Over
cellular, this data can be sent a number of ways:
-
Packet Data – 3G, HSDPA, GPRS, CDMA 1x & EV-DO
- Packet
data can be used for very low cost communications suitable
for “always on” connections and sending low amounts
of data
- It also
provides wireless broadband capability offering data speeds
similar to land line speeds of ADSL, especially with the latest
HSDPA networks
-
Circuit Switched Data (CSD) over GSM and CDMA
- SMS
over GSM and CDMA and Satellite
- Short
messages of up to 160 Characters that can be coded to hold
substantial quantities of information
- Useful
for infrequent data messages but can get expensive if regular
data communications is required.
- DTMF
tones over mobile
- Works
better over GSM than CDMA
- Low cost
way of sending small amounts of data frequently with the added
benefit of knowledge of receipt (the call is established)
-
Data over voice
- An emerging
area with several developers working on solutions offering
data speeds around CSD rates but with the ability to take
advantage of voice tariffs
Typical M2M Applications Include :-
- Fleet and
Transport
- Vending and
Retail
- EFTPOS
- Asset Tracking
- Security
and Surveillance
- Consumer
Data
- Metering
and Monitoring
- Emergency
Services
- Healthcare
- Public Traffic
Systems
- Telematics
- Public Information
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