So this could be considered an input device, and output, hah.
I've worked at home for some time now. Good phones are critical when you're on the phone much of the day. And to avoid fatigue, headsets and speakerphones become pretty important. I've had good luck with a Plantronics CS55 headset allowing me to be mobile but if I'm in the home office I'd just as soon not have to wear that. I've also had good luck with my Panasonic DECT 6.0 phones which double as speakerphones. About my only complaint is a few folks are so quiet I have to turn the speakerphone on just to heard them. The batteries run down but I have multiple so by the time I've killed them all the first has recharged so I can basically go forever with those so long as I put them back on the charger when dead. For in the car I have a cell phone that works OK, speakerphone volume is a bit weak but can be boosted with a bluetooth speaker which I have. This leaves wired speakerphones. As old fashioned as land line is, it's nice to have, batteries never run out and a really good wired speakerphone is better quality than all the rest. This is an area where my success has been limited.
I have an old Sony IT-D200 that's OK but some folks say they can't hear me well and have had issues with it drawing too much line power. I've tried a few consumer electronic phones from Office {max/depot}, Best Buy, Staples etc, most recently an ATT-CL2909. None of them have improved on the old Sony and I quickly get complains to some degree. I could probably go buy a new Polycom speaker and be done with it as they are damn good but not perfect and pricey. Don't think I'll get reimbursed for any of that any more and am too cheap to foot the bill myself. I still might try to go that route if I can figure out which older models work with a home line so might be able to pick up a used one cheap if I'm patient.
So... I decided to try the geekhack vintage route and looked up an older Nortel model I've used at the office before that's home line compatible and snagged one off ebay. Well technically it was an Aastra, same model though. We'll see if it solves my problem or not. The digital phone system integration features like intercom & meridian mail are going to be useless with one phone at home but as long as the speakerphone is usable that's all I care about.
I probably should have posted about this before but didn't think about it. I knee-jerk bought yet another phone already but it was pretty cheap and no guarantee it's going to address my speakerphone needs. There was a thread about working from home / home office here not long ago so thought I'd follow up and get some feedback about the results others in similar scenarios have had.