User guide

ALEOS 4.2.3 User Guide
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SMS Security- Inbound SMS Messages
When Trusted Phone Number security is enabled, incoming messages coming
from the phone numbers in the Trusted Phone Number list, are the only ones for
which commands will be performed (relay, response etc) or gateway messages
forwarded. Incoming messages from all other phone numbers will be ignored.
Figure 8-11: ACEmanager: Services - SMS