Operating Instructions - Siemens TEL50.GSM General Instructions Manual

2.2 Operating instructions

1. The SIM Card must always be inserted and removed when there is no power supply. If not, the SIM Card read
interface inside the GSM module could be damaged.
2. Always disable the PIN code of the SIM card. If not, the TEL50.GSM cannot operate. Delete from SIM card all
lists of SMS (inbox, outbox, sent items) and disable all additional services (answering service, call forwarding,
etc). Do this using a normal mobile phone. SIM card (non included) could be for voice traffic only. However we
recommend using SIM cards that are also enabled for data traffic.
3. Check that the area of use has adequate GSM coverage for the selected operator. Check that the GSM signal is
present using the special LED on the device (see par. 4.6) or a normal mobile phone. Place the device in an area
where there is good signal reception (eg. near a window or door). If there is no signal or the signal is weak, you can
install an external antenna in a more favourable place using the optional lead.
4. Do not power the TEL50.GSM without first connecting the stilo antenna supplied: otherwise, the power section
of the radio transmitter in the GSM unit could be seriously damaged.
5. There is no guarantee of SMS message forwarding times from and to the device (commands, querying or alarm
reception). SMS management is the exclusive responsibility of the mobile telephone network companies.
6. It is advisable to set SECURITY=1 (incoming call filter – see par. 7.1). This will limit device's answer only to
user list numbers (e.g. no answer to promotional SMS).
Building Technologies - 6 - TEL50.GSM