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

sean darcy seandarcy2 at gmail.com
Tue Feb 26 20:42:15 CST 2008


sean darcy wrote:
> Tzafrir Cohen wrote:
>> On Sun, Feb 24, 2008 at 05:38:43PM -0700, James Finstrom wrote:
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>>> Sean,
>>>
>>> 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.
>>
> 
> I swapped to a different power connector for the card. Rebooted.
> 
> Still the same problem on the very first call after reboot.
> 
> Beginning to think this is a beta4 issue.
> 
Not beta4, but zaptel-1.4.8. zaptel svn 3883 solved it.

sean




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