Nortel BCM50 Installation And Configuration Manual page 42

42 Chapter 4 DN records parameters
The field is described in
Table 9 Capabilities and Preferences - IP Terminal Details
Keep DN alive <checkbox>
N0027269 01 N0027269 01
Table 9.
This feature is only relevant to the Nortel IP telephones (2XXX).
When selected, the system retains the IP telephone DN record even if the IP
telephone becomes disconnected. Retention occurs as long as the IP
telephone has completed the bootup process. It allows DN-specific features
such as Call Forward No Answer and Call Forward on Busy to continue to
function even if the telephone is disconnected.
WARNING: If the system is reset, and the IP telephone is disconnected, the
feature remains inactive until the telephone is reconnected.
Note: A delay of about 40 seconds occurs between the time when the IP
telephone is disconnected and when Keep DN alive becomes active. During
this period, incoming calls receive a busy signal or are rerouted to the prime
set, depending on system programming. The delay also occurs when the IP
telephone is reconnected to the system.
If Keep DN alive is not selected and the IP telephone is disconnected, the DN
record becomes inactive. In this case, a
produced when special features, such as Call Forward, are invoked.
prompt is
Not in Service