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SICAM Q80 7KG8080
7.2.2
Message types
The message types Email, SMS and FAX come with different strengths and weaknesses which can be considered
when making a selection.
7.2.2.1
SMS
An SMS can contain only a small amount of text while offering the advantage of being able to alert a service-
technician or responsible engineer directly via mobile. Transmission via the network operator usually takes place
within a few seconds, although this is not guaranteed!
For electronic re-processing and archiving, an SMS is rather inappropriate. To send and SMS, a modem is absolutely
necessary.
7.2.2.2
FAX
A fax can transmit significantly more text than an SMS and is the most direct message form since it doesn't have an
intermediary provider. The device dials the fax machine's number directly.
There is also no time delay between the device's sending of the message and the arrival of the message at its
destination. However, the fax machine would have to be permanently watched in order to use this advantage.
Since a fax is transmitted as a bitmap graphic, the data volume transferred is much greater than that of an email or
SMS. Therefore, transmitting a fax can take several minutes when using a GSM modem.
A fax is only very conditionally suited to archiving, and re-processing is practically not possible at all. With Messaging,
the size of a fax message is limited to one page. A modem is absolutely necessary for sending a FAX.
7.2.2.3
Email
An email can contain almost any amount of text; only the size of the configuration file set certain constraints.
Transmission of email by the provider usually occurs after a few seconds, though there is no guarantee for this. By
contrast, the email-client may be set to retrieve messages only at longer intervals.
In terms of archiving and re-processing, emails are best suited. In addition, sending an email doesn't require a modem
if a mail server is accessible via the LAN interface. In this way, the slow process of dialing via modem is also omitted,
so that the emails are sent much more quickly.
If, for instance, the modem is occupied by a PC dialing in, it is still possible to send emails via the LAN. On the other
hand, all messages which rely on the modem are detained until the modem is available again.
However, to send an email, an account with a mail server is necessary so that the device can be identified by the
server by means of a login name and password.
Power Quality Recorder SICAM Q80 7KG8080, System manual
E50417-H1076-C420-A2, Release 12.01.2015
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