[Asterisk-Users] Hard Ground (On Ring)

[Greg Blakely]

If you have a single line phone, or better yet, a butt-set, hook it up
to the TELCO side of the 66 block, and remove the bridge clips.  This
effectively isolates the customer equipment from the telco circuit.

Then, using that butt set (or phone), go off hook and see if the static
is still there.  If so, it's telco's problem.  If not, it's yours.

Generally, if the service works and has static or hum on it, it's a TIP
ground, since a RING ground would have the effect of seizing the
circuit, thus making it completely unusable.

Whatever the cause, though, if it's in telco's stuff, they have to fix
it.
 

> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com 
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of 
> Brent Franks
> Sent: Thursday, September 02, 2004 1:27 PM
> To: asterisk-users at lists.digium.com
> Subject: [Asterisk-Users] Hard Ground (On Ring)
> 
> We have been experiencing static noise on one of our phone 
> lines connected to our Adtran Total Access 750 which is then 
> connected to a T100P card.  I was convinced that, after rain 
> storms, the static would get worse, it was surely a problem 
> of Verizon's.  Verizon sent a field rep out today and he told 
> our secretary (I was busy) that there was a hard ground on 
> the Ring portion of the line.  Looking at the setup we have 
> the NID connected directly to a 66 Punchdown block which then 
> spans out to an amphenol 50 connector that connects to the Adtran.
> 
> Could the Adtran be making a hardground anywhere?  Has anyone 
> seen/heard of this issue before?  Unfortuantely, my 
> background is computers and not electrical, so I am lost...
> 
> Any help would be greatly appreciated,
> 
> Brent
> 
> 
> _______________________________________________
> Asterisk-Users mailing list
> Asterisk-Users at lists.digium.com
> http://lists.digium.com/mailman/listinfo/asterisk-users
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-users
> 
> 
>