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--- telephony:td816bx_hardware [2025/04/08 04:24] – prppedro
+++ telephony:td816bx_hardware [2025/04/19 23:44] (current) – prppedro
@@ Line 8: / Line 8: @@
 The ROM complex is detachable, for reasons I deem unclear, since those chips are already seated on sockets. See below for more information on that detachable board.
+## ROM version
-## ROM mysteries
 As mentioned below, this unit has P401 software, dating back to 1996. It's an old ROM. The system seems to not have more than 320 KB of RAM. By all hardware measures, it seems to map to at least version "-1", which also corroborated by [this](https://www.tek-tips.com/threads/need-rom-kx-td1232-dash-6.1789345/) and [this](https://forum.nortel.spb.ru/archive/forum-10-pbx/t-5622.html) posts:
@@ Line 27: / Line 25: @@
 ```
-However, {{ :telephony:td1232-816detailedfeaturelistperversion.pdf |this document}} contradicts those informations, since this ROM does have a lot of features that would make it a `-4` model. Oh, and the CPU seems to be a 12 MHz model, as well.
+And [this webpage](https://komendant.pro/spr/viewthread/17334/#91783) also lists a fuckton of other versions.
+In addition to those sources, {{ :telephony:td1232-816detailedfeaturelistperversion.pdf |this document}} seems to confirm we got at least a `-1` unit. I used to believe I had `-4` software level because I was using a programming guide that seemed to be 1:1 with my ROM, but, in fact, I confirmed later that several newer features were missing.
+Critically, we're missing support for newer expansion cards, like the KX-TD193DX Caller ID card I've bought. Other than that, the losses are a bit minor. There are some features in that document that I kind of wanted, but none I can't live without (FFS, I could've even live without the central itself, so everything I got thus far is already pretty dope.)
-In reality, it shouldn't matter much, unless you need specific features. In my case, KX-TD193DX Caller ID card won't work with P401A ROM. FIXME [Put the 193DX investigation in a separate article]
+As for the Caller ID card, this is an adventure on it's own, and this KX-TD193DX card is basically the same card (TA123293) used by TA1232, the non-DPITS, older version of TD1232, from what I gather. TA1232 itself is a eerily similar project. I'm discussing those topics [[telephony:ta1232_td816_td1232_hw_arch#caller_identification_card|on a different article]].
 ## ROM/RTC clock Board

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