Oh right....I haven't picked up the phone yet so there's nothing to
hear.
Sorry. I haven't actually used one of these telephone thingys in a long
time.
------ Original Message ------
From: "Lewis Bergman" <[email protected]>
To: [email protected]
Sent: 11/9/2017 4:52:46 PM
Subject: Re: [AFMUG] ATA CallerID question
Remember, the signal comes between rings. Unless you are listening on a
butt set in line or watching the info pass through a switch you
wouldn't see or hear it. The only reason I remembered between first and
second is sitting at a class 5 switch trying to figure out why caller
ID was failing on a feature group D trunk group and seeing them come
through after one ringy dingy.
On Thu, Nov 9, 2017 at 3:46 PM Adam Moffett <[email protected]>
wrote:
Is it at an inaudible frequency? If so, then it wouldn't make it
through 2600hz bandpass filters would it? Or maybe it's audible, but
so short you don't notice it? I'm fuzzy on this.
I probably shouldn't ask. I don't need to know that much about POTS
anymore.
------ Original Message ------
From: "Lewis Bergman" <[email protected]>
To: [email protected]
Sent: 11/9/2017 4:40:57 PM
Subject: Re: [AFMUG] ATA CallerID question
More info than anyone probably wants to know. I found this about the
original question:
Caller-ID Signaling
According to Telcordia specifications, CND signaling starts as early
as 300 mS after the first ring burst and ends at least 475 mS before
the second ring burst
From here: http://www.tech-faq.com/caller-id.html
On Tue, Nov 7, 2017 at 9:29 PM Adam Moffett <[email protected]>
wrote:
I did not know that tone contained modulated data. I just thought
it
was a noise you wouldn't ignore.
That's a fun fact to have.
------ Original Message ------
From: [email protected]
To: [email protected]
Sent: 11/7/2017 4:39:27 PM
Subject: Re: [AFMUG] ATA CallerID question
>Monitor the line for the data burst. It is the exact same
modulation
>method as the emergency alert system you hear squawking on the TV
>before the beep and thunderstorm warning.
>
>I think it comes before the first ring or right after the first
ring.
>Some of the original display units rectified and stored ring
voltage
>for power so it may need the ring first to power the display box
then
>the data.
>
>In any event, you can hear it if you have a butt sett with line
monitor
>mode.
>Bell 202 is correct.
>
>-----Original Message----- From: Nate Burke
>Sent: Tuesday, November 7, 2017 1:58 PM
>To: Animal Farm
>Subject: [AFMUG] ATA CallerID question
>
>At a customer, I just hooked up a Cisco SPA122 into an Ancient
Lucent
>PBX system. The customer says that caller ID is not coming
through,
>but
>it used to work with his old AT&T Lines, and it appears to be
hitting
>the ATA Properly. Is there a setting on the ATA that needs to be
set
>that older systems may be looking for?
>
>The only settings I see for Caller ID in the ATA are Caller ID
Method,
>currently set to 'Bellcore(N.Amer,China)' and Caller ID FSK
Standard,
>set to 'Bell 202' I've never had to mess with those settings
before.
>
>Nate
