July 2013 © British Telecommunications plc 2013
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PROGRAMMING
Programming Port
The programming port is used for upgrading the software on the unit using a USBNav
programming dongle, or analysing the units de-bugs information using a USB to TTL serial
cable (3V3).
See section on serial de-bug for further information.
Unit initialisation
At power up the unit will display its current software level on the display.
Figure 5
In the above example the display cycles 60 -41- 60 -11 -06 indicating that the software level is
K60P41A60P11 Release Candidate 06
The unit will then immediately attempt to connect to the BT Redcare platforms over the
configured paths. The unit will typically complete path establishment in the following times
from power up.
IP
40s
GPRS
50s
PSTN dial IP
40s
Figure 6 - time to commission paths after unit power up