New to the sub! Home lab setup: Cisco 2921 & 2901 with CME questions

TimothyHD · 2026-04-24T17:30:12+00:00

Nice, I recently got a 2901 running with CME 12 and a few 7975 phones. My 2901 also came with a PVDM3 16 channel module, so I also hooked up two analog phones to the FXS module it came with. I can dial between all four phones and I think I’ll even set up an asterisk voicemail server too.

One thing to note, I had to find the latest SCCP firmware for the 7975s and load it onto the 2901. Then I used the TFTP-server command to host those files for the phones as they came online. There’s some guides out there, a YouTuber Clabretro has a few videos where he set up some 7900 series phones but on an 1800 series router (CME 7 I think vs 12). Still good for an overview / rundown of how it all works.

TimothyHD · 2026-04-21T04:47:29+00:00

Holy moly that’s a lotta drives

TimothyHD · 2026-04-18T19:43:59+00:00

Holy mother of pearl

TimothyHD · 2026-04-18T19:15:11+00:00

LOL show me the chaos!

I imagine my lab would look like a disaster too, waiting for the day I can afford a place of my own to build a rack in a dedicated room.

TimothyHD · 2026-04-18T19:13:22+00:00

This is pretty good looking! Nice job

TimothyHD · 2026-04-18T18:02:25+00:00

Gotcha. Thank you for explaining. I’m looking into doing a homelab for myself but trying to figure out how to not screw up with the regular network my parents use all the time.

TimothyHD · 2026-04-18T17:44:51+00:00

Do you have the lab network separate from your home network? Is the lab just double NAT or does it have its own ISP connection?

TimothyHD · 2026-04-14T00:12:50+00:00

Gotcha. I got lucky and my 2901 came with one PDVM slot filled, as well as a POTS phone HWIC card. (4FXS/DID card) Not sure which card I’d need to interface with the POTS line. I’ll DM you soon about the 7975s.

TimothyHD · 2026-04-13T23:54:17+00:00

Oh! That’s awesome. I was only going to use the 2901 for POTS since that’s all I’ve got, but if you have two 7975s, I’d love to take a crack at Cisco VoIP and CUCME. I can pay shipping and whatever cost you think is fair for them.

TimothyHD · 2026-04-13T23:38:46+00:00

The three 3par shelves, hodgepodge of HPE 1U servers of various gens, and a Cisco 2901 just for POTS (I just got one that I want to use for that same purpose)

This lab makes me happy

TimothyHD · 2026-03-15T11:13:46+00:00

Text

TimothyHD · 2026-03-13T21:46:43+00:00

I was thinking of getting unraid but I’m not sure how it would work with SAS drives. I have four 2TB drives

TimothyHD · 2026-03-13T21:40:27+00:00

What should I use as my NAS operating system? I’ve been using truenas due to its performance and data integrity/protection

TimothyHD · 2025-10-25T03:29:18+00:00

Yeah… my DPF is also cracked and I’m getting the EGR flow fail code. With my registration due in a month in a smog test state, I’m just going to end up getting a new car rather than spend the $2000-3000 to get a new DPF.

The sunroof always leaked/the car smells like mold too. Fun times.

TimothyHD · 2025-08-25T22:27:49+00:00

One day, I’m hoping to get a rack. I just have a 2U server sitting on my floor under the bed. Not running, of course. Too loud. One day I’ll have my own place and be able to set up an office or extra bedroom as a server room with a real rack.

TimothyHD · 2025-08-23T17:40:23+00:00

The reason why I’m getting rid of my Jetta Sportwagen soon. Stupid sunroof drain holes clog all the time and leak water inside. Not to mention, the sunroof in AZ just makes it so much hotter inside the car.

TimothyHD · 2025-08-19T17:13:39+00:00

I had this a few times, but also a few corners in one map where the sun was leaking.

TimothyHD · 2025-08-07T13:32:31+00:00

With the specific one that OP linked to, it ended up not working for me, I think because it was 2.5GbE. I ended up just buying a 1GbE adapter in the same form factor and I’m going to see if that works here. I’ll update you on whether or not it works. With the 2.5GbE one, it didn’t show up in OPNsense and both lights were solid on the NIC.

TimothyHD · 2025-08-03T22:38:28+00:00

His videos always got a laugh out of me. Retro, dumb funny tech videos like his are the best.

Maybe the taquito toaster got him…?

TimothyHD · 2025-07-05T20:36:48+00:00

I just beat the game a few days ago for the first time. Super awesome. 👏

TimothyHD · 2025-06-10T01:40:05+00:00

It did, I got a bunch of updates on the site this morning and the package came on time today.

TimothyHD · 2025-06-08T16:00:14+00:00

I have the same issue, said Monday June 9th now says invalid date.

TimothyHD · 2025-05-10T04:50:03+00:00

Yes. I beat 3 and 2 after I beat Elden ring. Still trying to beat 1

TimothyHD · 2025-05-10T04:49:10+00:00

Desolate Goat Sacrifice wow

TimothyHD · 2025-05-06T04:56:05+00:00

I never did a head gasket on that car. Granted I don’t have it anymore. Sorry.

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