I’ve been looking through the forums and search engines but the words I’m using may be too vague.
I am thinking of upgrading our legacy PBX to Asterisk but what’s bugging me is the fact that we have three phone lines going through a single RJ11.
The Digium TDM410 support four lines but that does require three FXO modules and having the line split into three or will the telephony card be able to distinguish the lines and extend it to the three channels?
Hi,
I think you need a RJ45 splitter to spli your 3 lines into 3 RJ11 socket.
If you are insteresting,you can contact me to discuss by email would be more convenient.
Email: michaelbryant81@gmail.com
what phone system do you currently have? Alot of systems are setup where 1 port could take 4 lines, it just depends on the pairs that are being used. If you could post the system I am sure someone can tell you how it is wired. Also if your demarc is close by, you may be able to just run a line cord straight from the demarc into the digium card(depending on your demarc of course).
Howdy,
The FXO modules are two-wire modules only. If you’ve got three lines running through an RJ-11, meaning you’ve got a 6P6C line, then you’re going to need to split it to three 2P2C lines, one for each FXO module port on the TDM410.
Cheers.
[quote=“malcolmd”]Howdy,
The FXO modules are two-wire modules only. If you’ve got three lines running through an RJ-11, meaning you’ve got a 6P6C line, then you’re going to need to split it to three 2P2C lines, one for each FXO module port on the TDM410.
Cheers.[/quote]
That was the answer I was looking for. Now for the actual splitter, will any splitter work? I was looking at:
prowirecommunications.com/store/product245.html
But it doesn’t appear to be 6P6C to 2P2C splitters. Would you be able to recommend a splitter?
Howdy,
Yeah, that’s not going to do it - that’ll just take all 6 conductors and push them to three separate 6P6C connectors - so each FXO port would be tied to the same module.
I think you’ve going to have to roll your own.
Depending on the internal structure of that thing, you might be able to open it up and cross some wires and come up with what you need, but I couldn’t say for sure.
You will need to split the 3 pairs off in to their own RJ12 6P4C connector. Terminate the wires in the center pair. All you need is a crimper. The wires are almost definitely solid (not stranded) so make sure you buy the right connectors (solid type RJ126P4C) or you might have problems with the wires breaking. This can cause the phone line to drop out if someone bumps the wires.
I am a licensed PSTN phone line technician / wannabe Asterisk guru in Australia.