> Thanks, Tyler. Can your company's equipment monitor the circuit to
> "hear" a conversation, or determine that it is being used by two faxes,
> not two analog modems, or is of purely digital content? The 64kbps DS0
> data stream would have to be converted to analog, I would think.
It can extract a DS0 thru DS1 signal from any of several access mediums
and deliver it to a protocol analyzer. Hmmm, was that an ATM PIN that
just went by?
> Monitoring the embedded 64kbps data stream of a DS0 or ISDN B-channel is
> not child's play and I'd be amazed if any US RBOC or IXC has this ready
> at the click of a mouse. More likely it requires a tap onto the wires
> that carry the 64kbps and some equipment to "drop" the DSO or B-channel,
Consider yourself amazed because most US RBOCs and several IXCs in fact
do. Sorry, I won't give customer names. Perhaps some of them may speak
up. The way data services are provisioned, they automatically have test
access (i.e.. Digital Crossconnect Systems). Many/most RBOCs and IXCs
also recognize the need for metallic test access and provide such on
loops. Not all use ours. Other vendors which come to mind are Wiltron,
Lucent, and TTC.
Quote:> or, requires special switch routing for FBI surveillance ordered by a
> court. I think you are referring to the ability that RBOCs and IXCs have
> to determine whether a circuit is in use or idle? RBOCs and IXCs do not
> arbitrarily listen into phone conversations, faxes, analog modems or
> digital communications. In the course of maintaining circuits, as you
> note, this may occur, but it usually requires someone to physically
> touch something more than a mouse.
No, I'm not referring to idle/busy verification. I can from my desk gain
remote access to a physical circuit. I then deliver it to a test set
which will have a physical connection to the circuit. I can tell the
test set to deliver it to a protocol analyzer. I can let the expert
level of the analyzer do it's thing. If I'm a guru, I can analyze to the
bit level. I can look at Frame Relay and ATM and Q.931, ....
The system interface is GUI. Yes, you do have to type in a username and
password and then enter a circuit number. From there it is, in fact,
Quote:> Please enlighten me as to how a child can play with a mouse at your
> company to monitor a phone conversation in the network. Newt wants to
> know, too ;-)
I didn't say at my company, I said with my company's equipment and
system. And o.k. I will tell you. Let's pretend you're that child. Enter
your username and password. Enter circuit ID. Click on test button. When
GUI circuit diagram comes up, click on the location you want to test
from. System knows it's a voice circuit because of the CLCI and it knows
your monitor call back number. It has the Remote Test Unit (RTU) call
that number and voila, you're sitting on top of the circuit. Does
someone using the line hear you come in? Depends on the access medium,
but not likely. Assuming you are a legitimate tester, you may then split
the circuit and perform VOMCAP and transmission tests. If you're not,
Get it? Do you think I'm making this stuff up? Rest assured that most
communications lines in the US have test access on them and can be
remotely accessed by tens of thousands telco employees using some sort
of computerized test or surveillance system. That's surveillance in
telco terms, not FBI terms.
"He's a High Tech Redneck"