Has anyone run an M2250 console from a Fiber Remote?

[Telephonist]

I have a CS1000M-MG (formerly option 81C), on 7.65. I have a group of people moving to a remote building, served by a Fiber Remote IPE cabinet.

They want to move two M2250 consoles to the area served by the Fiber Remote. I built the TNs on the FR, and moved a console to that location to test, and it works, but there is a sporadic static popping sound that can be heard by both parties.

I tried different consoles, and different TNs on both cabinets, and the sound is consistent. Digital phones function fine on the remote, and I can't find or think of any reason why the console shouldn't work.

I'm trying to find out if anyone has successfully extended a 2250 over a Fiber Remote.

Thanks.

 

[KCFLHRC]

I cant say that I have ever done it. Have you programmed and connected the Power TN's ?

 

[Telephonist]

Yes, and I get the popping noise no matter whether I'm using just the two console TNs, with one power TN, or with two power TNs. I thought it might be a weak power supply on the main cabinet, so I rebuilt the whole shebang on the second cabinet. Same outcome.

 

[KCFLHRC]

There is actually supposed to be 3 Power TN's, not saying that is the problem though.

The R/O pair gets the 2 tips
The R/G pair gets the 2 rings

And I believe the W/SL is the 3rd power TN wired straight.

 

[KCFLHRC]

Per the NTP

W/SL is the 3rd power TN and is required, however, no one ever does this. But it may be worth a shot in your scenario.

 

[Telephonist]

Yeah, that's the direction my thinking is heading. I'm reading through the 2250 installation NTPs now, and I think the 3rd PWR TN will be my next stop.

There's also a reference to a 15 VDC output on the FR wall cabinet. I think it's for the BLF module, which I don't have, but I'm trying to find out more on that, as well.

 

[KCFLHRC]

The 2250 can have an external 16 VDC power supply for back light and BLF but is not required.

 

[Telephonist]

Substituting the W/Sl ASM power TN for one of the others did the trick. Console works, and is "pin drop" quiet and clear.