User guide

UC864-E/G/WD/WDU Hardware User Guide
1vv0300766a Rev.4
- 03/02/09
Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved. Page 63 of 78
11.10. Indication of Network Service Availability
The STAT_LED pin status shows information on the network service availability and
Call status. In the UC864-E/G/WD/WDU modules, the STAT_LED usually needs an
external transistor to drive an external LED. Because of the above, the status
indicated in the following table is reversed with respect to the pin status:
LED status Device Status
Permanently off Device off
Fast blinking
(Period 1s, Ton 0,5s)
Net search / Not registered /
turning off
Slow blinking
(Period 3s, Ton 0,3s)
Registered full service
Permanently on a call is active