atcomsystems.ca/forum Forums TDM Business Telephone Systems Samsung Telephones & Systems Fax Not Working on DCS-816 SLI Port

Strangely enough all fax's work on ports 215 and 216, but not 213 or 214. I think you must be right about the pinout, I suspect a cross between the first two pairs.

I'll check out the install manual and MDF wiring and report back.

Thanks for your help with this - much appreciated.

I checked the pin out for the SLT RJ 45. The guys had done the job according to the manual:

Pin 1 - Tip 213
Pin 2 - Tip 214
Pin 3 - Tip 215
Pin 4 - Tip 216
Pin 5 - Ring 216
Pin 6 - Ring 215
Pin 7 - Ring 214
Pin 8 - Ring 213

This looks odd on the MDF as; 213 connects to OW/BrW, 214 connects to O/BrW while pairs are retained for 215 (GW/G) and 216 (Bl/BlW).

I suspected a misprint, so have experimented with pairs OW/O and BrW/Br, but these do not even produce a tone so I guess the manual is correct.

So I'm still at the same impass 213 and 214 work ok as outgoing lines for faxes, but can not receive (or try to receive, but the calling station still gets the ring tone as if the lines have not been answered).

The problem now is that I need to configure these lines to link into a voice mail/aa system and I've still got the same issue.

Could it be something to do with these circuits being configured as Off Premise Extension OPX connections, or do you think that there may be a minor board fault on this system?

Also, I didn't see it posted yet, but you need to plug in your butt set to the analog port and call the number and make sure that the port is ringing. You said it "seems" like they are ringing. You want to make sure. Because there are some parameters that you need to assign for the analog ports to ring. I dont know if you have done that yet. If you haven't then let me know and I will go get the manual and tell you what MMC it is.

Parameters for the sli ports to ring?Not sure what you mean by that,if you call the extension it will ring.

Check the manual, I think you can change the way the port ring, ICM,CO.

True you can choose icm or co type ringing but that shouldn't affect the fax machines unless they were ident a call compatable.Even then ,the fact they worked on the 2 other ports says to me that the first 2 sli ports were bad sine he said they were wired correctly.

I believe the trouble to still have to do with splitting the pairs of ext 213 & 214. As mentioned, 215 and 216 work fine - if you are using a 568B Cat5 patch cord as an interface cable, the green and blue pairs will not be split. However, you mentioned that 213 was connected to orange white / brown white. If, as I suspect, you have used a 568B cord as an interface cable, extension 213 should connect to white orange / brown white with extension 214 using orange white / white brown.

If the pairs are split between these two extensions it it very possible for outgoing to work but incoming to fail. If you call a display phone from either of these extensions do the extension numbers report correctly?

Aardvark. You were correct about the crossover (though the 568B vs 568A cable didn't make a lot of difference).

213 was connected to pin 1 and 7 (White Orange and White Brown).

214 was connected to pins 2 and 8 (Orange White and Brown White.

Sorry guys - this was a dumb mistake and I should have picked it up earlier. Thanks for all of your help and sorry for wasting the time.