Technical data

90 Theoretical and general applications www.westermo.com
SMS
The most used service after telephony. An SMS message utilises the signal channel to
transfer text messages. SMS has become popular for both private and professional use
on account of its simplicity. In summary the service offers:
… A message may be up to 160 characters in length.
… Transfer cannot be guaranteed as the receiver may be switched off or outside
of the coverage area. The message can be sent with different settings:
… How long the message will “live” on the network when it does not reach the
receiver before being discarded (up to a week).
… Received confirmation, i.e. the sender receives confirmation that the message
has arrived.
… You receive an acknowledgement that the message has been sent.
… Sending and reception can take place during a call.
… Transmissions can be made to individual recipients or groups of recipients.
MMS
MMS stands for Multimedia Messaging Service and works in the same way as SMS, but
with options to:
… Send images and animations.
… Send music.
… Record and send your own messages.
… Type long text messages.
… An MMS holds thousands of characters, depending on which mobile phone
you use.
Fax
Available for class 1 and class 2 fax
B A C K