Some clarifications about Boom and Radio alarm:

- both have an internal timer for the next alarm, so go off, when your
server fails to send a signal at alarm time
- only the Radio actively (and very aggressively) checks, whether a
stream is playing. So while a Boom might get a signal from the
(working) server 'please play this stream', it will fail the alarm, if
the stream does not properly connnect (or stops inbetween).
The Radio checks every 10 seconds if there is an active stream and will
sound the fallback alarm. Only a 'silent' stream makes the Radio think
everything is fine, while there is still no sound from the speaker.

Also the Radio will sound the fallback alarm when it lost connection to
the server. This is because it does not trust the server anymore once it
has lost the connection.
Typically a server sends a 'right now nothing is playing' signal when
it is restarting (as it doesn't know that there is still some alarm
after a restart), thus silencing a maybe still running alarm on a
Boom.

So if something is flaky - the Radio will sound the fallback alarm
quite often (which in turn might also annoy people).
Boom does not sound the fallback alarm as often - but in reality has
less measures to prevent you from not waking up.


Last common problem with alarms: These fallback mechanism ONLY work,
when the Radio or Boom does know about the next alarm.
Many people find it convenient to change alarm time via the
web-interface, iPhone/Android/iPad remotes, whatever. When doing this,
you will never know, if the alarm arrived on the Radio/or Boom.
Typically this doesn't give problem - at alarm time the server triggers
the alarm anyway. But on the rare occasions when the server is not
sending the signal due to problem, the Radio/Boom never knew the time
when a backup alarm should sound - and won't wake you up.

So to have a reliable (fallback) alarm, one needs to setup alarm time
directly on the Radio (as then one would realize if the Radio/Boom
probably does not have a connection to the server).


-- 
bluegaspode

Big Screen for great Boxes available now at your AppStore: *'Squeezebox
+ iPad = SqueezePad ' (www.squeezepad.com)* - -now featuring streaming
to iPad!-  
Want to see a Weather Forecast on your Radio/Touch/Controller ? => why
not try my 'Weather Forecast Applet'
(http://forums.slimdevices.com/showthread.php?t=73827)
Want to use the Headphones with your Controller ? => why not try my
'Headphone Switcher Applet'
(http://forums.slimdevices.com/showthread.php?t=67139)

Setup: 1x SB-Controller+Receiver (Duet), 1xSB-Boom. 2xSB-Radio
Server (7.5.x) running on SheevaPlug (Ubuntu) with attached Western
Digital MyBook Essential.
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View this thread: http://forums.slimdevices.com/showthread.php?t=86841

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