Teardown of a mystery item found in the dumpster. #DumpsterDiving #Teardown Subscribe on LBRY: eevblog.tv Crypto Donations: www.eevblog.co...
Пікірлер: 240
@bobweiss86824 жыл бұрын
The -110V bus must be used for ringing voltage generation. Typically a phone line is 48 VDC, with a 90Vrms 20 Hz sinewave superimposed to ring the line.
@EEVblog24 жыл бұрын
Yep, had to be it. Probably fairly low current, although you'd have to cater for all phones ringing at once worst case
@lmamakos4 жыл бұрын
@@EEVblog2 yeah, and the loop voltage is -48V referenced to ground, so that it's a negative bus sorta makes sense.
@jaro69854 жыл бұрын
Per the label: 3.3V 14A, 5V 3A, -48V 1.3A, -110V 0.2A. From what I see online a line might take 10mA to ring (~1W).
@leonkernan4 жыл бұрын
Hang on, I've got an Avaya system running over 2 sites, connected through the internet by a VPN. The IP Office 500 is at the main office and the second site only has a PoE switch for the phones. Following your logic, how are the phones at the second site ringing? We aren't sending a sine wave over the internet. edit: I'm a dill, we're using IP only, analog was a separate option for these units.
@agurdel4 жыл бұрын
Thats what I was thinking too, but this is IP and not POTS. There might be a module available that uses it, but I would say that the -110V is unused in this configuration.
@ed-jf3xh4 жыл бұрын
I wish I had access to a dumpster room like yours.
@rundata4 жыл бұрын
You do It’s just locked and you need to let yourself in ;]
@jimmaziashvili85334 жыл бұрын
@@rundata This is the Lock Picking Lawyer, and what I have for you today...
@sandy16534 жыл бұрын
They call it an IP Office, but it's not actually an IP PBX, it's a digital PBX with their own proprietary signalling between the PBX and the various stations. The five hundreds are also gimped from the factory. They've got 4 bays and 4 headers on the main board but you can actually only run 2 cards in the silly thing. I haven't been an Avaya dealer in a while, but I seem to remember our basic package of one of those and 10 phones was in the $6,000 range.
@TheLambLive4 жыл бұрын
It's design is more about rinsing unknowing businesses of cash than providing a good PBX system.
@sandy16534 жыл бұрын
@@TheLambLive One of the reasons I stopped being a Nortel/Avaya dealer lol.
@jamesdavies6864 жыл бұрын
Our system has all 4 ports populated. What are you talking about? Also, these can handle Digital, Analog, and H323 IP phones plus SIP. You are clueless. It is a true IP phone system. All depends on what cards you put in it.
@Mythricia19884 жыл бұрын
I'm just impressed your camera can change aperture without a visible shift in brightness. That exposure adjustment is fast as f****
@tookitogo4 жыл бұрын
Maybe it’s a mode equivalent to the “P” mode on an SLR, where it shifts the aperture and shutter in lockstep, such that the EV (exposure value) remains the same.
@darrenslab55374 жыл бұрын
Audio will be for music on hold.
@gvii4 жыл бұрын
I used to bebop all over the North America installing Avaya VOIP equipment like that. And yeah, you're right. New, they are several thousands of dollars. I couldn't give you exact numbers, I just installed them and ran the wiring. As with most office equipment, it really doesn't seem to go for much secondhand.
@jfbeam4 жыл бұрын
Indeed. The multi-thousand dollar audiocodes crap we have can be had on ebay for $50 these days.
@someguy49154 жыл бұрын
The value typically is in service and support, knowing that if anything goes wrong or breaks you will get quick replacements from the selling party, once it goes second hand it has lost that support usually and is near worthless. Some tiny companies might purchase it if they're desperate and some IT students might want to use it to learn, besides that not many buyers (and the students won't pay much for it anyway), plenty of supply, no demand.
@darrenslab55374 жыл бұрын
The line cards would be worth selling on ebay
@gbowne14 жыл бұрын
this one should be called "Dave plays with lights for half an hour."
@leonkernan4 жыл бұрын
I've got one of those in the server room right now running our phone system.
@jastervoid4 жыл бұрын
Leon Kernan same
@Tomothy-e3b4 жыл бұрын
Same here, Belongs in the dumpster imo
@TheLambLive4 жыл бұрын
My sympathies.
@pmsrodrigues4 жыл бұрын
We run this at work as well, but since it was installed last year probably not the same version. Will need to check.
@stonent4 жыл бұрын
AT&T's phone division became Lucent Technologies which later became Avaya.
@larryrussell54404 жыл бұрын
Avaya was actually a division of Lucent that sold business phone systems. Lucent was the former equipment division of AT&T that was originally Western Electric. They did everything from fabricating cable to chips to large mainframe central office switching systems to mobile. Lucent has now merged with Nokia.
@themrenerd73844 жыл бұрын
@@larryrussell5440 Before Lucent was bought by Nokia they merged with Alcatel, then Nokia bought Alcatel-Lucent
@pen254 жыл бұрын
@@larryrussell5440 they have also merged with alcatel. and if i remember correctly nortel
@mechlabman4 жыл бұрын
Standard POTS ( plain old telephone sets ) operate with 48 volts open circuit, 6 to 10 volts off hook. The ring voltage was 90 volts at 20 hertz. I can only assume that the 110vdc is used to ring the bells of any old time phones attached. Although the older phones were actually fed a quasi sine wave 90v 20hz signal, you can pulse dc into the older phones to get a decent ring. The new phones have a huge range of parameters...
@DJLuDog34 жыл бұрын
My dad who who was a telephone tech for 40 years says 110 is coin collect and coin return he forgets which one is which but thats what they used +110 and -110
@naikrovek4 жыл бұрын
ok but this switch doesn't have coin return or coin collect, so why does the supply provide that voltage? It won't provide that voltage over Power over Ethernet, either.
@beefchicken4 жыл бұрын
Coin collect/return was +/- 135 VDC
@user2C474 жыл бұрын
Why would a PABX need coin phone lines?
@tookitogo4 жыл бұрын
User 2C47 LOLing at the thought of an office requiring its staff to deposit coins to make calls. :p I suppose, in reality, that there are situations (in the past especially) where you’d want some pay phones in a building, and for some reason wanted them on the PBX instead of just letting the phone company run a separate line. And maybe in prisons?
@ShoutingElectronics4 жыл бұрын
That unit looks more like an Analogue (POTS) PBX than IP Based. You can see that the Ports on the front do not have Ethernet Transformers/Magnetics, they have the more beefier Audio Transformers. Also each port on the front is used for 2 seperate extensions, if it was IP POE, then each port could only run 1 extension on it. The Analogue Units use higher Voltages to provide ringing voltages. But Nice find on that Powersupply....
@TomStorey964 жыл бұрын
The ethernet ports are on the back, and it is called the "IP Office 500" afterall... The modules in the front are probably for trunks - I did see mention of BRI on there, so ISDN sounds likely.
@mrfrenzy.4 жыл бұрын
That's actually a really solid PBX, I have one at a customer and it just runs year after year. Easy to setup ring groups and queues etc. Works with both Avaya and 3rd party phones. Licenses are expensive.
@swebigmac1004 жыл бұрын
I have one of those at the office. Bought it for like 10k usd w phones 7-8 years ago. Still use it. Works good.
@evensgrey4 жыл бұрын
I worked in a place that installed something like this about 19 years ago (much bigger installation, for a couple hundred lines). Inside, the hardware is going to just be a pretty standard PoE-equipped switch, which means a beefy power supply to supply all the power for the connected phones. (PoE is still pretty much standard for phones, so many distribution switches with IP-phone capability have surprisingly hefty PSUs for otherwise fairly modestly sized equipment.) As for how much modern equipment with similar capabilities costs, the closest match I can find quickly is a Cisco switch, model WS-C2960X-24TS-L (24 ports, PoE, and all 2960 range switches have VoIP capability available, it just needs to be license enabled and configured, then you need to install the VoIP server software on a suitable server and configure the system). Being a modern device, this 2960 has gigabit ethernet ports and 10-gigabit ethernet ports for uplink, and supports Cisco's cross-linking standard so you can stack 4 or 8 units together (I forget which version this particular model supports) and cross-link them into a single logical switch (which makes administration easier). As standard, you can get individual units with up to 48 ports, so you can get up to 360 IP phones (each with attached workstation) per logical switch. And, from some resellers, you can get the 24-port model for under a thousand bucks at the moment. I located an old ZDnet review of this device www.zdnet.com/product/avaya-ip-office-500/ which says this device supports IP phones or digital phones (apparently a different protocol) but doesn't mention support for analog phones. It also quotes a list price of US$700 in 2007. The only manuals I can find from Avaya are from 2005 for IP Office 4xx series devices.
@Willy_Tepes4 жыл бұрын
I have learned a ton from your tear downs.
@geirendre4 жыл бұрын
This can be loaded with different modules, so you could have one for POTS phones (and a FAX), some for IP-phones and some for PC's, printers, AP's etc. That's the "Office" part of the name of this thing. It can supply all you need of connectivity at a small office. Firewall, printserver, the whole shabang.
@TofuInc4 жыл бұрын
The only IP part about these is the IP phones and Trunks, as well as the ability for them to be programmed over the internet and time sync. They did no IP connectivity beyond phones. Avaya would be happy to sell you a separate $3K 48port re branded switch to go with that phone system...
@Ken-sk7oe4 жыл бұрын
The 500V1 used a external power supply. There was a 400 series before the 500 they had a white cover. The 2 cards installed are COMBO cards they slide in from the front. Ports 1-6 are for digital phones, Ports 7-8 are for analog devices or for Overhead Paging, ports 9-12 are for CO lines or POTS lines the kids say (Plain Old Telephone Service). The LEDs change colors to show if a port is being used. There are several different cards as well as Expansion Cabinets that plug into the Expansion ports 1-8 on the back. The 110 bus is ring voltage for the analog ports. The SD card contains the OS either Basic Mode or IPOffice Mode, it also stores voice mails and contains Licenses. The 3.5 headphone jack labeled EXT O/P are 2 contact closures, Audio is for a Music On Hold. The WAN port is for SIP trunks. The LAN port connects to your Local Network it also functions as a router. If I remember correctly there default IP Address's are 192.168.43.1 for the WAN and 192.168.42.1 LAN. I worked as a tech for a AVAYA business partner for many years.
@G7OEA4 жыл бұрын
I used to be a system admin for that system. They came out in 2008. The as card is for the license files for voice mail and the number of supported phone's. The audio is for the external music on hold source. They were a really good and fully featured systems for the price.
@davidblarstron7674 жыл бұрын
its needs an external analog music source???? havent they heard of mp3?? or is it if you want the audiophilc experiance of analog audio....over the phone!
@TheXlen4 жыл бұрын
That's a nice Delta PSU you've got there before you even mentioned any of the components the name Delta is already a good indication.
@tannerbass71464 жыл бұрын
You should grab all those phones, salvage the mics, and make a mega microphone array 😁
@Sunnyskyguy4 жыл бұрын
I designed a 1U rack for AVAYA (nee Lucent) as their 1st outsourced ODM about 20 yrs ago at C-MAC Winnipeg. It was a simple POE 24 channel for their digital phones. I made the 1st mockup prototype delivered to Denver in 7 wks ARO contract with sheet metal and PCB's. This was around the time when stack jack RJ45's 1st came out. This is a sophisticated IP VOIP POE with voicemail office network server or extension. We produced most of the Nortel products as well as many other company products.
@reddragon272844 жыл бұрын
Complete guess, but is the -110V for ringers on analogue phones if it had a POTS card installed?
@christophertstone4 жыл бұрын
Pronounced: ah-VI-yuh It's the renamed remnants of Bell Labs via Lucent.
@williamjones44834 жыл бұрын
Not Bell Labs. Western Electric. Bell Labs still exists. It is owned by Nokia. en.wikipedia.org/wiki/Alcatel-Lucent en.wikipedia.org/wiki/Western_Electric
@klarusboy4 жыл бұрын
anything interesting on the SD card?
@leonkernan4 жыл бұрын
Probably the reason it’s gone in the bin. Those get corrupted and the system is toast
@EEVblog24 жыл бұрын
@@leonkernan Wouldn't surprise me unfortunately.
@CliveChamberlain9464 жыл бұрын
@@leonkernan it's for config and nortel/avaya don't make shit. what makes people toss them is scam artist service providers charging an arm and a leg (covid gives them excuses too)
@_Miner4 жыл бұрын
Also stores any licenses for additional paid for services
@avibank4 жыл бұрын
Really surprised by light pipes. Thought it would be eaiser amd cheaper to mount led pcb with ribbon to main board. Shows what I know...
@turbochardged4 жыл бұрын
i still use them. it's pronounced AH-VIA. it's a phone system for digital phones. good find! The 110 is used for "ringing" analog extensions.
@spunkmire26644 жыл бұрын
"Second channel shit" is the shit i like.
@Nighthawke704 жыл бұрын
IP Telephony, kinda what motels use for their phone systems. The cheap ones that don't want to switch out their phones for PBX units. Pretty straightforward in programming, only if we used FAX systems, then we get down and dirty in the software to set it up properly. I've converted a condominium from a old school POTS system to IPT and its mostly gruntwork, repunching the local patch panel into the IPT panel and verifying it all works. It's pretty bulletproof.
@odbo_One4 жыл бұрын
Willing to share this dumpster with me? Thanks for another great video!
@cryptearth4 жыл бұрын
avaya is actually a big voip company in the call-center business - these systems support not just the voice comm but also digital shift time clocks to track when you're available for a call, in call, after a call, have a break, all sorts of other special custom codes - it'S basically a drop in one-in-all solution focused on the needs of the call-center business
@brodiehaward4 жыл бұрын
I have that exact thing running the IP phones in my house. Picked it up cheap on ebay.
@kf5tqnkf5tqn364 жыл бұрын
48VDC was a telco standard for POTS lines in off-hook operation long before Ethernet (much less PoE) was dreamed up.
@BersekViking4 жыл бұрын
110v could be for an (optional) ISDN interface. An open (unloaded) ISDN line typically show around 100v.
@adancalderon89154 жыл бұрын
Bell Labs, Lucent, then Avaya. I still use their old analog Partner ACS systems.
@redsquirrelftw4 жыл бұрын
Northern Telecom and Nortel in there somewhere too. So many changes and transformation in telecom gear companies lol. oh and Northern Electric too. I think it went something like Northern Electric -> Northern Telecom -> Nortel, and then when they went tits up it kinda got split up. Avaya is one part, there's also Ciena I believe. Not sure if Alcatel-Lucent is part of it too or is separate. Then there was the smaller ones like Newbridge. Kinda too bad they're gone, their stuff was actually made in Canada. Don't see much of that anymore.
@TheEPROM94 жыл бұрын
Switches & Routers oftern have good PSU's in worth salvaging.
@williamsquires30704 жыл бұрын
Don’t forget to pull the SD card - reformat it and away you go; wheeee! 😊
@pgprentice4 жыл бұрын
Phone lines normally run on -48v DC (referenced to ground) when the line is idle. During the ringing cycle (in the US, 2 seconds on, 4 seconds off), a ringing voltage of 75-90v AC (typically 20 Hz in the US) is superimposed on top of the -48v DC.
@Alacritous4 жыл бұрын
I would have shit myself if I found a complete IP phone system in a dumpster.
@larryrussell54404 жыл бұрын
If you tried to sell it, it would be considered to be gray market, and you would have a lot of trouble getting software and support without a maintenance contract which would be way more than what it is worth.
@Jae_9724 жыл бұрын
thats a PBX server for an avaya phone system. one of our clients still has that same unit up and running. its horrible i can't wait to rip it out.
@l3p34 жыл бұрын
why its horrible?
@shaunclarke944 жыл бұрын
I used one in an old job and had no big complaints?
@swebigmac1004 жыл бұрын
We have one of these at the office. Works great. Have the voicemail system w sound recorder and all of that. Works great. Easy setup also. No complaints
@Marzec3094 жыл бұрын
My guess is the -110V is for the ring voltage.
@IanLemmon4 жыл бұрын
There are voltage differences for activating message waiting lamps on analog phones as well. Modern systems use 90V. Some older systems are over 100V. Could be this system was capable of lighting lamps on older analog phones.
@jamesdavies6864 жыл бұрын
Dave, this is still a relevant phone system. I install these several times a year. Maybe don't scrap it.
@afsfigueriedo20094 жыл бұрын
Interesting ! This one is from Brazil ( The ANATEL symbol in the tag :)
@ekaa.31894 жыл бұрын
That unit is going to be all digital. IP phones have their own DAC and ADC circuits. It will talk to the IP phone via TCP/IP.
@l3p34 жыл бұрын
Yes but maybe it connects analog phones to an IP phone network. Real IP phones go directly to the ethernet ports also used by computers I think. That thing is on the back here. Those ports on the front is to hook up old phones, backwards compatiblity. I think!
@twocvbloke4 жыл бұрын
if the unit has Hybrid ports (Analogue & Digital), the 110v will be for ringing traditional telephones, would be pretty pointless to have 110v for an IP phone given the ringing on those is software controlled so I would definitely go with the hybrid system theory... (I only have experience with Panasonic KX-T61610BE & T30810BE analogue phone systems, cos I like collecting vintage phones)
@Natures_Intentions4 жыл бұрын
I don't have Twitter or Instagram so I don't see any videos posted on that social media.
@shaunclarke944 жыл бұрын
Used this system in an old job of mine where it ran a school phone system. Probably still does actually. Plenty of them on eBay these days so aren't worth a lot.
@joopterwijn4 жыл бұрын
Just writing down my internal laughter, -110,... that serious cooling 🤪😂😎
@jagardina4 жыл бұрын
Avaya is what ATT Western Electric eventually became. First Lucent, they they split off the boring phone switch and voicemail business to become Avaya. I think they're owned by Alcatel now or something.
@zeroy4 жыл бұрын
Funny seeing this, worked for years on these and older models (412) there isn't much to them really... But still worth a few quid.
@barrieshepherd76944 жыл бұрын
Nowadays you could replace it with a Raspberry Pi running a free Asterisk install and have probably double the number of features - and no endpoint license costs.
@TheTrueCelt284 жыл бұрын
The company I work for just swapped out all the Avaya items they had! Hope it went to the local technology recycling company.
@Dylant384 жыл бұрын
Would make a great at home phone system, for the ones without cell service but excellent internet service
@Buy-n-large4 жыл бұрын
can you image the SD card and link it?
@acidrain554 жыл бұрын
I see you have a Fluke on the table, what you would recommend for electronics. The Fluke 113 is cheapest one near me, but what do you think?
@stphinkle4 жыл бұрын
Usually the ringing of analog phones (which many phone systems also support), is accomplished by applying a 90 volt pulse.
@cognetic4 жыл бұрын
We pronounce Ayaya as ...uh-vie-ya or uh-v(eye)-yuh
@TheDefpom4 жыл бұрын
don't phones use a high voltage (~75VAC) for the ring? but I wouldn't have thought that would apply to something like this.
@EEVblog24 жыл бұрын
Ah yes, of course forgot about the ring, and that this was phone system :->
@SeanBZA4 жыл бұрын
@@EEVblog2 J package will be the old digital interface board, and it will stay J lead because it is the part dealing with the -48V side, to provide power and signalling down the cable to the individual phones. Yes likely an old part, but also helpful in isolation with the larger lead spacing. Supercap is for backing up the time and date, system configurations will be held on the SD card, as they will survive the power being off for long periods. Should be provision there for a battery bank, and then the power supply will provide 48V to charge it, running the whole system off a set of secondary converters to power it, while the mains input goes to provide the 48V supply only.
@jp-ny2pd4 жыл бұрын
That Avaya branded chip probably contains the licensed IP like the G729 audio codecs and whatever they use to talk to their phones.
@kenwolfe60934 жыл бұрын
110v for ringer. Actually 70v but that’s the likely reason
@jamescrook994 жыл бұрын
Wonder if they wiped the sdcard, or left the config, including passwords, voicemails, user details for forwarding .....
@williamsquires30704 жыл бұрын
Wow, did anyone notice the notch in the PSU board just for that crystal? That probably cost the company $$$ to have that notch custom-cut, when they could have just rotated the crystal 90 degrees and cleared the PSU PCB easily. Okay, Dave, time for the epic fail button! 🤣
@TomStorey964 жыл бұрын
It doesnt look like the PSU board itself has a notch cut out of it, just the insulator underneath, which may have been designed by Avaya themselves. Agree though, a couple of mm shift or rotate and that could have been a much simpler part!
@PsiQ4 жыл бұрын
yeaaah. when you were rewiring the old 1960 telekom wires which came in your 3 floor house but had 20 or more connectors.. for 2 phones connected.. you could get a tingling on the back of your hand when somebody called in with those 110V... only did it once when moving the dsl router. Now that everything is stuffed into voip and you are helpless on a power outage OR internet problem. went from power redundant to two failure points without safety backup.
@echoecho5404 жыл бұрын
Dave: **has camera zoomed in for over 2 min on power supply sticker that clearly says -110V out** Also Dave: Whatttt?!!?? This has -110V output???
@gglovato4 жыл бұрын
yeah i was screaming at the screen, the label details everything!
@marcellipovsky82224 жыл бұрын
@@gglovato I was more waiting for AvE's "Focus you F**k!" 😂🤣
@EEVblog24 жыл бұрын
As I have to explain many time, you can't read that fine font on the 3" camcorder LCD, or direct line of site from half a meter away. It's easy for you when watching on your bigger screen zoomed in.
@marcellipovsky82224 жыл бұрын
@@EEVblog2 Dave, why dont you use an external live monitor for a preview?
@jamesmdeluca4 жыл бұрын
Greetings: looks like they left the microSD program CHIP inside. You should verify the voltages on the PS outputs. No guess for the -110v supply usage.
@theradiomechanic96254 жыл бұрын
Ring voltage, 90v @20 Hz
@timbelson95224 жыл бұрын
Im learning telecommunications as a technician for most of our equipment its all supplied with negative voltage for example some alarm systems use -48v
@garyslatter98544 жыл бұрын
You find the best stuff
@Mosfet5104 жыл бұрын
@ around 6:38 or so you said the same thing I did. I was reading the ps label and had to take a double take myself when I saw that!
@mavsmith1234 жыл бұрын
These are still in production... Costs depend on installed license
@davidblarstron7674 жыл бұрын
WTF?? who buys this things anymore havent they eard of asterix??
@shaunclarke944 жыл бұрын
@@davidblarstron767 this supports analog, digital and IP phones. And analog, ISDN and SIP trunks.
@TofuInc4 жыл бұрын
@@davidblarstron767 Asterisk is trash if your trying to use it for a legitimate phone system.
@zvpunry19714 жыл бұрын
It is pronounced "electronic waste". ;)
@paulucas574 жыл бұрын
the modules pull out from the front
@MrNaufan4 жыл бұрын
what camera you're using
@Chriva4 жыл бұрын
That thing would be heaved to play around with and turn it into something else. Lots of fun processors, DSP's, FPGA's etc :)
@gordonzero4 жыл бұрын
ROFL IP Office 500 ... we still use this where i work ... if only i could get them to toss it and go to VOIP Phones
@robine52804 жыл бұрын
Teardowns belong on the main channel.
@ovalwingnut4 жыл бұрын
"Unknown Condition, Selling as Parts or Repair". The AD would have to read 🙄 IMHO. Really puts a damper on value 😢
@lost4468yt4 жыл бұрын
When I used to sell boards like this I'd just write that they were working so long as they booted. Very very rarely is there something that was broken that would still allow it to boot fine. If someone ever said it wasn't working I'd just trust them and refund straight away. But that happened so rarely, much more rarely than it would get damaged or go missing in shipping.
@stphinkle4 жыл бұрын
If it works, it could be used in a small office.
@itsmesb43994 жыл бұрын
Again another video I never got a notification for even though the bell is on for all.
@hempbear4 жыл бұрын
Nice plastic poker you got there but I liked it more when you used a pocket knife to scratch inside a $10K+ spectrum analyzer :D
@keithking19854 жыл бұрын
was there a SD card in the left slot at the start??? P.S. all the different outputs on the power supply.. NICE!! a keeper for sure!! : )
@excitedbox57054 жыл бұрын
nice power supply but the rest is pretty useless. Could donate the boards to a school and they can use them for solder practice.
@mercuryvapoury4 жыл бұрын
... but what was on the SD card?
@Fake_Blood4 жыл бұрын
Maybe the "audio" jack is an input for the waiting cue music?
@0ddhair4 жыл бұрын
It is, I've got one of these we're slowly phasing out.
@svenboske8444 жыл бұрын
Speaking of Delta Electonics: recently I got a cheap chinesium Monitor to use as second Screen, which came with a Delta Electronics branded Powersupply. Can this be real? Or are there many Counterfeits out there? It makes my mind boggle to get a decent PSU with cheap Stuff...
@Djkyle654 жыл бұрын
should have grabbed the phones pretty expensive stuff
@alexdhall4 жыл бұрын
That depends on the age and condition of the phones.
@johncajka54244 жыл бұрын
-110 volts dc will help with long runs on the phone lines
@pvisit4 жыл бұрын
I see a telephone technology noob here :-)
@MikeF11894 жыл бұрын
Avaya is the Keysight of AT&T
@AttitudeGames4 жыл бұрын
-110 v for the phone ring circuit maybe ?
@chrissnyder20914 жыл бұрын
That my friend is an avaya IP office telephone system controller. I have installed them and serviced them...
@rikvdmark4 жыл бұрын
Must taste good. It’s NOM certified 🤣😜
@NiHaoMike644 жыл бұрын
Since it appears the phones aren't just Ethernet, it's worth getting one to tear down, then more if it turns out there's something worth salvaging from them!
@nrdesign19914 жыл бұрын
I'm *super* curious to know what's on the system SD card
@mrfrenzy.4 жыл бұрын
Operating system and ivr/voice mail prompts/recordings.
@emmoemminghaus64554 жыл бұрын
-100V... probably some Intrusiondetection! :D
@TheSadButMadLad4 жыл бұрын
Is this a photography channel or an electronics channel? All this talk about f-stops is confusing to electronics people. And all this talk about bga and voltages is confusing to camera people. :-o