User's Manual

SME VoIP System Guide, Version 2.6

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Chapter:

SME VoIP Administration Interface

signalled. The maximum value is 255.

Howling

Enable/disable if howling shall be started in the handset, when the alarm is

signalled. If disabled, only the configured signal is sent (call or message).

This alarm feature is only available on some types of handsets (e.g. the RTX8830)

After configuration, the handset must be rebooted.

5.14.1 Use of Emergency Alarms

As described above, it can be configured if it shall be possible to stop an alarm from the handset. If the

possibility to stop an alarm from the handset is disabled, it is ensured that an alarm is not stopped before

someone at e.g. an emergency center has received the alarm and reacted upon it.

The behavior of a handset when an alarm “is sent” depends on the configured Alarm Signal:

 Call: When the Alarm Signal is configured as “Call”, the handset will make a call to the specified

emergency number, and the alarm is considered stopped when the call is terminated. If it is not

allowed to stop the alarm from the handset, it will not be possible to terminate the call from

handset, and the alarm will be considered as stopped only when the remote end (e.g. the

emergency center) terminates the call.

 Message: When the Alarm Signal is configured as “Message”, the handset will send an alarm

message to the specified alarm server, and enable auto answer mode. If Howling is enabled, the

handset will also start the Howling tone. The alarm will not stop until a call is made, and since auto

answer mode is enabled, the emergency center can make the call, and the person with the handset

does not have to do anything to answer the call, it will answer automatically. Again, the alarm is

considered stopped, when the call is terminated with the same restrictions as for the Call alarm

signal.

All type of alarms have the same priority. This means that once an alarm is active, it cannot be overruled by

another alarm until the alarm has been stopped. However, if the alarm is not yet active, i.e. if it is in “pre-

alarm” state and an alarm configured with no pre-alarm is fired, then the new alarm will become active and

stop the pending alarm.

Alarms with no pre-alarm are considered important, and there is no possibility to cancel them before they

are sent, and therefore alarms with no pre-alarm, are given higher priority than alarms in pre-alarm state.

The Emergency Button could be an example of an alarm which would be configured without pre-alarm.

Thus, when the Emergency Button is pressed you want to be sure the alarm is sent. However, If another

alarm was already in pre-alarm state, it could potentially be cancelled, and if the Emergency Button alarm

was ignored in this case, no alarm would be sent. This is the reason why alarms with no pre-alarm, are

given higher priority than alarms in pre-alarm state.