Re: Telco Line Fault??

["Rockytsquirrel" <gafa@xxxxxxx>]

I've noticed  in rural  Kentucky  the pots line  runs around 6 vdc  but if
it has DSL  it will run around 12 vdc..

Some of the newer equipment manuf.  are setting there equipment to the 9-10
vdc  limit..
(I was told  that they expect  most if not all off-hook voltages will be
raised to the higher limit..)

I doubt  that will happen anytime soon  in the third world phones of
Kentucky.
AT&T  has been loosing ground to bad maintenance and failing equipment since
they took over BellSouth..




"ABLE1" <royboynospam@xxxxxxxxxxxxx> wrote in message
news:UmrBn.213044$Bs1.76592@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>
> "Doug" <not@xxxxxxxx> wrote in message
> news:MNqBn.91758$iL1.21395@xxxxxxxxxxxxxxx
>>
>> "ABLE1" <royboynospam@xxxxxxxxxxxxx> wrote in message
>> news:z4pBn.55010$vX7.28936@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>>> Hey to all,
>>>
>>> I installed a new Fireworx FX-64RD panel a couple of months ago.  Almost
>>> from day one started to receive sporadic Telco Line Faults.  Both Line 1
>>> and Line 2.  Little correlation can be determined except it happens 9
>>> times out of 10 during the week Monday - Friday and during the day 9am
>>> to
>>> 5 pm.  In other words 90% of the time during working hours.  (aka when
>>> the
>>> phone are likely to be used)
>>>
>>> It happens 1 to 3 times in a given day and then skip a day or two.
>>>
>>> It was originally connected  to their Line 1 and Fax Line, I have moved
>>> to
>>> L-1 and L-3 no help.  It is now on L-1 and L-2 and am waiting to see how
>>> it goes.  Line 1 happens less frequent so I have left it alone.
>>>
>>> In calling UTC Tech Support...........................  I was told that
>>> the threshold voltage is 10vdc.
>>>
>>> I have gotten the 10vdc from a couple of different techs so that must be
>>> the number but it seems to be on high side.  I remember on a burg panel
>>> that I was having a problem a couple of years ago I was told the
>>> threshold
>>> was 6vdc.
>>>
>>> What I am reading at the panel is 6.5 to 7.5vdc when a phone is off
>>> hook.
>>> So if the threshold is 10vdc then the panel is going to go into trouble
>>> after the timeout of 2 minutes which is the maximum.
>>>
>>> The lines that I am working with are (what I think is) POTS lines on
>>> copper. However I was told that if there is a digital converter?? it
>>> could
>>> cause some trouble.  How do I determine if this is the case???
>>>
>>> Has anyone here experienced this??  Especially on this panel??
>>>
>>> Any additional thoughts that may help would be appreciated.
>>>
>>> TIA
>>>
>>> Les
>>>
>>>
>>
>> If the threshold really is 10 volts, which as you say sounds too high,
>> and
>> off hook you measure 6.5 to 7.5 volts which sounds about right then other
>> than changing to dedicated lines you are going to struggle to resolve
>> this.
>>
>> Honestly I can't see that the threshold voltage is really set at 10 volts
>> or
>> it would be a major issue for them.
>>
>> Doug
>
> This is kinda where I am going on this, and I am glad you pointed it out.
> I am wonder if the UL 864 specifies the voltage threshold in some way to
> some how dictate that dedicated lines be used for fire panels??
>
> I keep getting this statement from tech support that "UL requires
> dedicated lines."
>
> I am trying to get someone at UTC to explain the 10vdc threshold but it is
> difficult.
>
> Aside from that I will look into the ground and Viking issues.
>
> Thanks,
>
> Les
>
>
>
>
>
>