[asterisk-users] beta4: outgoing call causes Red Alarm on TDM400P

[Tzafrir Cohen]

On Sun, Feb 24, 2008 at 05:38:43PM -0700, James Finstrom wrote:
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> Sean,
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> I believe the alarm is generated by the bits flipping 1111.
> In "kewl" 1111 is hangup so every time you hang-up you could
> potentially alarm. 

That is: if the FXS uses KS, then upon hangup it will deny power for a
while. The FXO on the other side identifies this as if somebody
disconnected the wire, and is temporarily in alarm.

> I don't know what the timer delay is but I think
> anything over a second would be safe otherwise you will see red alarms
> but they will probably be more of an annoyance than a serious issue.

Unless you actually want to keep the line open even upon recieving the
power denial. I can't think of a practical use for this.

-- 
               Tzafrir Cohen
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