Hi welcome to some dumpster diveing tear down/ Salvage time We've got some uh, various office phone and internet uh protocol IP phones here courtesy of uh John who sent them into the previous mailbag video which I'll linking down below if you haven't seen it and I um scored this one from my uh dumpster here in the Eev blog Towers it's a Panasonic one. so I thought we'd just open them all up uh, quite quickly. won't be very thorough. Tear down and see uh, what's inside the things and see if there's any usable Parts because you might be able to find these.

you know, a company shuts down or whatever. Uh, they just tend to toss these things out all the time. So is there anything worthy in them? We'll find out. First up this: Panasonic one that I found model number Kxt 743 and it's your typical uh, you know system Pabx uh type phone you might have in an office.

lots of uh, you know, pre- dialed numbers and stuff like that and you know it. It does a few things, but nothing particularly fancy at all. LCD display we might be able to salvage and it even tells you there it is digital proprietary telephone made in Malaysia this sucker. let's crack it open here.

It is pretty much what I expected. all uh, single board construction. We've got the lever coming down here looks like to a micro switch down on the board like that. I've got ourselves the microphone down here.

You could rip that out. that's for the speaker phone system. Look the uh jog shuttle thing here. Nice little optic encoder on its own PCB there.

very nice. We'll Salvage that out. get the speaker of course and most of it. You know most of the stuff on here H Not, you know, hugely.

uh, salvageable. but you'd probably keep a board like that for, you know, some SMD uh, rework training or something like that. Um, you'd get the flat Flex Out of here, we'll get the LCD out of here. It's probably like a standard uh Hitachi chipset one.

Perhaps we'll have to have a look at that, but uh yeah, you know there's a few salvageable items in here. that's for for sure. That's the optical encoder board. It's a Mitsumi, very nice.

very usable. Standard Electric mic insert that's a keeper and the board just unscrews out of there the Matrix and the uh LEDs surface mount LEDs to light up the individual keys over here. all surface mounted on the bottom of the board and directly on true. single board solution in that phone.

Very nice. Only a double-sided uh layout there. That's really all they need. Um, you know you can forget the chips.

These are all sort of proprietary jobs, you know? don't even worry about trying to salvage those. That micro switch over there was nothing of the sort. It was, uh, you know, not like a standard little one you can desolder or something like that. a lever based one unfortunately.

But yeah, you keep that board for. um, maybe some parts salvage or SMD training. You might get some Regulators out of there or something like that and it looks like we might have ourselves some Byol SMD leads there. You can see how they manufacture these keypads here on the little lever arms there, all part of the one big big plastic frame.

Look at that. that's uh, you know, once you've got that, uh down, uh, Pat on your assembly process, that's a very, uh, cheap and efficient way to do it and get nice. Um, you know, tactile? uh, well, nice. uh spring feel on your keys.

And here's the LCD module. Uh, it's a rather curious, uh, 16 character By3 line display. and yes, it is standard, uh, hatashi? uh, 4780. uh, stand.

but unfortunately, the connector over here. weird ass. uh, you know, fine pitch, like 36 pin job. so not standard pin out there.

but you could, certainly um, hack into that. and uh, drive that display and it's got little uh buttons here as well. That's presumably why they've used a larger uh, flat, Flex there larger pin count, but you might want to, uh, keep those as well. In fact, I would, uh, keep this entire thing because it has the buttons and everything else.

so I'd probably keep that entire assembly. Check it out, it's even freestanding. What a Bobby desler. And how about this teler one? Very similar to the Panasonic one? Uh, in terms of use that we just had and then this one made in Australia Beauty And here we go.

It's actually a Nutel phone. H Look at that attention to detail here. Look at the padding they've put in there, the dampening material for the speaker there. just a, uh, improve the Acoustics a bit.

Nice attention to detail. Aha standard header going to the LC That's what we want. Beauty Um, you know, uh, still all SMD single board, uh construction. nil chipset here.

you know you might be able to Sam You know there's a might be able to salvage some Transformers or something else on, but basically the same as the Panasonic one. Got ourselves a LCD on the back here. It's going to be a custom LCD but we've got some zebra strips. look at that.

Definitely keep those. They're always handy cuz they're difficult to get. um, just for you know, generic uh, use like this there. you know you pretty much have to salvage those and once again, same deal.

It's all integrated. double-sided PCB Um, you know, don't need multi layer, all custom Nortel chipset whether or not they're full Asic or whether or not they're you know, something else it wouldn't surprise me n tell a huge. Things like inductors are always very handy to have in your junk box so you know these are nice through hole ones. You'd probably suck those out.

Couple of SMD ones over here, you might get those out as well. Maybe some of the electrolytics to throw in your kit? I Mean there's a 1000 Vol 16 mik low profile electrolytic. You can see how they have just gone for the Uh single. uh Key Construction They haven't molded those into a frame at all.

two line by 20 character standard Hatachi display with ribbon cable a standard1 in header. Beautiful. Definitely reuse that sucker. Next up, this polycom made in Thailand sound Point IP Phone: There it is connects to your Lan PC You probably could still use this as an IP phone, but well, you know I don't really I use an IP phone at home, but I've already got a wireless system so let's crack it open.

Looks like a 20 line by 4 character display. Beauty Well, this one's not as built down to a price point as the previous ones. I mean uh, look, we've got um, you know, a separate uh, membrane, uh, keypad over here with the uh membrane. Flex We've got some uh Flex cable going in there for the contact.

the uh, the handset contact up there. Look at that so you know it's it's a bit different, but yeah, you definitely. uh. keep that board.

They've got a header up there. some sort of uh programming. oh, programming SL production uh, test header or something like that pulse Transformer Nothing else. Hugely salvageable in this thing though.

But as I said, you can still use it as an IP phone if you wanted to. Well, there's a surprise: a TMS 320 DS P Go figure. And we've got a KS 881 ethernet switch built into that, so that just ties into our TMS 320 processor there. And then we've got our pulse Transformer and uh, the uh, miscellaneous um paraphernal interfaced here ether connection ah what I thought was a programming production header is actually a board to board interface and it's a bottom uh entry.

There we go. There's a standard D header, so there's our look at that beautiful standard uh 4X uh 20 character as I said um LCD module with the standard uh header pin out going to a female uh pin header recepticle in the bottom of the board. So You' actually that would be a keeper. You'd uh, maybe, uh, suck, maybe remove that sucker.

but oh, the LCD Beautiful. We just pop that out. It's like a Bol one. So they've gone to a bit more trouble there.

They got a custom metal backing plate on this thing which is sharp by the way. it can cut you quite deep Slic me open there. What a bummer. But uh yeah, they've gone to a little bit more effort there than the previous phones which were just uh uh, you know, the carbon tracks on the back of the PCB and this module on the side here was just designed to slide in to the side of the case.

here. it's got a big what looks like a big graphic LCD bunch of soft buttons probably for a um, you know, a soft dial directory. uh, quick directory type function and there's a fair bit of guts in that. Check it out.

A bunch of reverse Mount Uh, surface LEDs there. Yeah, the blood's getting a bit worse. Ah, no worries, and it looks like it's a two wire interface. This board just slides out into contacting the other side, so power and data goes across that two wire interface.

Really quite neat. Got an Epson LCD driver there by the looks of it and uh, not a huge amount more. So these are the same. Reverse Mount LEDs They just, uh, shine through a hole in the board.

Exactly the same as I used in my microcurrent here. Just drill a hole in your board, shines through through. Neat solution. and that's a neat solution because you can mount all your components single-sided load.

instead of having a top mount lead, you'd have to run through this board a second process through your pick and place machine just to put your leads on the top side. That cost you time. That cost you assembly line time and money. and sometimes you can reuse little light pipes like this.

Always um, handy just to have a little uh, part straw filled with these things. You might be able to hack them into some product and that to wire system looks like it's cascadable too. This plugs into your unit over here and then another one can plug into here and so forth. Not how many? Not sure how many you can plug in, but uh yeah, that's rather neat.

And that abson part's actually a fairly beefy, uh, 32-bit microcontroller. But you know it's not like you'd reuse this. and there it is. You could, uh, possibly reuse that graphical LCD it's a PC 3721 WN but you search that all you get is some Brokers so might be hard to find the equivalent or a sheet for that one, but you keep it just in case.

And another really simple polycom. And the good thing about this phone is that couple of screws on the back. easy and quick and these pop off. You can salvage the parts too.

easy. Here's an interesting alternative to screws. Um, because of course, screws take uh, time and effort to actually, uh, punch in. There's just a standoff behind there and that's just like a hot, melted uh, you know, rubber or uh, something like that and that just keeps the board off the standoff there.

and we have one of ourselves. a chip on glass Cog um display. not quite as usable as the .1 in headers, but uh, certainly yet another keeper. The problem with a product like this with that huge uh Texas Instruments uh BGA in there.

Not quite sure what that is T or something, but anyway. um yeah, look, you know, look at all the Uh components. they've got. maybe some 0 603s, um, you know, some 0 402s down in there.

doublesided load, very dense, all that sort of stuff that just costs more to make than the other phones we've seen. Getting a bit sick of Polycom by now, you can see the attention to detail on the Acoustics They've got rubber surrounding this Jewel rubber surrounding this electric mic in there. Nice. TMS 320 DSP Again, and that micel chipset.

The other one was a micel, but it was rebranded some other name but basically the same part. Scored another one of these identical Graphics LCDs and you'll notice that they've um, probably leared their lesson here. Look, they've gone for the reverse Mount SMD leads. Even though they're using the Uh BGA package over here, they've decided to not uh, you know, we can get away without using any bypass caps on the back.

so only single-sided load except for that connector down there and a Nortel Network's uh, ethernet phone. Once again, you could reuse this I Don't have the power adapter or uh, stuff for it, so that makes it a bit difficult. You put, uh, likely power over Ethernet as well. Well made in Australia Again, beautiful.

This is the I24 model NT EXO This microphone's really interesting. You can see like a micro grill or something down there in like a big horn arrangement with the Standard Electric mic at the bottom like that. but they've gone to a bit of trouble there to do that. They've decided to do their switches as membranes there, so we just got the carbon button on an extended membrane coming out there.

I Don't know about that. We've got ourselves a bonafied bodge there. look at that looks like a decoupling bodge. We keep seeing the same things over and over.

TMS 320 DSP We've got an Epson micro over here and uh, here. we've got a net silicon uh device for the Uh Ethernet interface and check out the Uh light pipe. They've got there halfpipe going over just to light that uh red light on the front. Going to a bit of effort and there it is.

not often you get one of those so we'll keep that might be usable for something. Unfortunately, the LCD on this one not really reusable. It is a complete Uh custom job by the looks of it. and we've got the heat bar connectors down here so you know we can just peel that off.

and well, once you do, um, not really reusable unfortunately. check out this piece of engineering. uh, acoustic porn. I've never seen them anyone go to this much trouble in a phone.

Look at this. Not like a my uh cone. not just a crappy paper cone speaker in there, but it's got a rubber acoustic seal in this. Completely sealed, like six screws there and then a um a a vent port on the back for presumably better, uh, base performance.

That's just one complete assembly. They've popped in there and this, uh, Port vents out the uh top of the case here. like, oh, the bottom of the case, uh, down near the the desk. Unbelievable amount of effort for the Acoustics, but hey, thumbs up somebody went to town on that Guild in the Lily and lucky last, a different manufacturer.

Cisco Systems IP Phone 7960 What's inside this puppy? We'll find out. Well, this one's actually a bit old school compared to, uh, some of the others. Look, we've just got uh, you know, MOX connector type wiring up to a board here, solded directly through none of the flat Flex We''ve seen, um, we do the LCD uh, once again, probably. uh, you know, not hugely reusable because uh, you know it's this.

um, instead of being a hot bar attachment, sold it down. you could reuse it cuz it's a press fit. But then you've got to, you know, uh, push it down onto your board contacts. We've got some shielding over this, so they've you know, taken themselves seriously there.

and we've got ourselves a uh, a daughter board here just for the uh. Ethernet interface and power. Go figure. We do have some form of part number on there, but you know the odds of reusing this? uh, you know, probably more effort than it's worth and we could desolder this.

but Uh, screw that literally. TDA we're in like Flyn and for your trouble, you copper couple of big ass custom Cisco chips. We've been mooned so we end up with a box of crap and a box of useful stuff. Beautiful! Catch you next time.

And don't forget the small kiter screws!.