If you have call waiting, you'll often hear the caller id 'data burp' after the first 'call is waiting' beep...
On Thu, Nov 9, 2017 at 2:52 PM, Lewis Bergman <lewis.berg...@gmail.com> wrote: > 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 <dmmoff...@gmail.com> 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" <lewis.berg...@gmail.com> >> To: af@afmug.com >> 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 <dmmoff...@gmail.com> 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: ch...@wbmfg.com >>> To: af@afmug.com >>> 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 >>> >>> -- *Forrest Christian* *CEO**, PacketFlux Technologies, Inc.* Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602 forre...@imach.com | http://www.packetflux.com <http://www.linkedin.com/in/fwchristian> <http://facebook.com/packetflux> <http://twitter.com/@packetflux>
