We use Avaya Merlin Legend PBX at work and to manage it remotely one must first dial location's number and then ask someone to transfer him to system management extension. That takes a lot of effort and is just ugly in general. Also the system can be managed through direct serial connection. However, like always, big phone companies like to screw you over and keep coming up with non-standard interfaces so they can sell you some $50 adapter. PBX's control unit has a regular RJ45 port labeled as 'Admin', while serial port obviously has a DB-9 or DB-25 connector. As I mentioned earlier, this could be achieved using some stupid proprietary 355AF adapter. Not only it costs ridicolous amount of money for a piece of plastic with 2 resistors inside, but also it has 25 pin connector that noone even uses anymore. There's also a better way to do this.
I stumbled upon some forum post with 355AF pinouts, but they had some wierd wire colors. All other pinouts I found had same colors too and they were defintely not regular ethernet colors. At least all of them had ethernet connector pin numbers as well so matching them to the 568B layout was easy. I soldiered it to a female DB9 connector and surprisingly it worked without a glitch using the WinSPM software.
So here's the pinout with the correct ethernet colors. Please comment if this works for you too.
I stumbled upon some forum post with 355AF pinouts, but they had some wierd wire colors. All other pinouts I found had same colors too and they were defintely not regular ethernet colors. At least all of them had ethernet connector pin numbers as well so matching them to the 568B layout was easy. I soldiered it to a female DB9 connector and surprisingly it worked without a glitch using the WinSPM software.
So here's the pinout with the correct ethernet colors. Please comment if this works for you too.
| DB9 Pin | RJ45 Pin | Color |
| 1 | 2 | Orange |
| 2 | 5 | Blue/White |
| 3 | 6 | Green |
| 4 | 3 | Green/White |
| 5 | 4 | Blue |
| 6 | 7 | Brown/White |
| 7 | 8 | Brown |
| 8 | x | |
| 9 | 1 | Orange/White |
1 comment:
The colors you saw on those sites was the telco color code for an 8-pin jack. The intent was to create this adapter using a Mod-RJ adapter (a $3 item) and those are the colors you'd find inside the plastic housing because they connect to the mod pins.
BTW, "RJ45" is a misnomer. The RJ45 refers to a telco pinout of an 8 conductor jack/plug rather than the plug/jack itself. The color code you refer to is for either a 568A or 568B 8-conductor pinout used ethernet cabling.
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