Help Installing a New EPN

[Joaquin1]

First of all I've never done this before so bear with me.

I'm trying to install a new EPN for a new building about 3.5 miles from my MDF. I have set up the equipment right in my MDF in an effort to try to get it working before relocating the EPN to the new building.


I've attempted to administer the circuit packs and add the new fiber-link but the EPN won't come up. The new fiber-link for the EPN is no. 8. and the EPN cabinet is also no. 8. I am using the long-range transceivers 9823B on both sides.

I've verifed that I did not have my fiber pairs crossed and I swaped out with my spares all the circuit packs, fiber patch cord transceivers and even the whole EPN cabinet to no avail.

When I status cab 8 instead of "up" under Connectivity Status I see "far end" and the LEDs on the circuit packs are flashing very fast instead of the normal heart beat pattern.

Comparing the PPN/EPN configs the only thing that I see that is diffrent between the working EPNs and the new one is that I have a TN573 installed in the PPN instead of a TN573B, I don't know if this is causing the problem.

Configuration:

In the PPN I have a TN573 installed in (01E17).

In the EPN I have a TN570b installed in (08A01).

One 20ft. multi-mode fiber patch cord between the two.

A 9823B tranceiver on each end point.

Any help is greatly appreciated.

Thanks
Joaquin

 

[mikeydidit]

I beleive you must swap the transmit and receive on your fibers in order to get your link up . One other thing to look at is if this install is over 3 miles, did they install single mode fiber. If so they will need to be single mode fiber jumpers. Let us know if this gets this going for you.

Mike Jones
LSUHSC

 

[OldPhoneGuy]

Are you using single mode or multi mode fiber? If single mode fiber you need 300A single mode tranceivers.

 

[Joaquin1]

I did swap the fiber pairs and I also tried another new fiber patch cable. I was told that the vendor was to install multi-mode in the new building and the near end is also multi-mode fiber a is the intermediate hop.

Thanks
Joaquin

 

[Joaquin1]

We are using multimode fiber.
Thanks
Joaquin

 

[Bobg1]

I am using the long-range transceivers 9823B on both sides"

Do you have any standard transceivers you can try?
At 20ft, you might be saturating these.

 

[mikeydidit]

Have you been able to get the EPN up and working yet? I have looked at the Avaya site and it seems the transceivers that you have are good up to 25,000 feet or over 4 miles. (I wanted to make sure they were good at that distance). One more thing that may help is to pull up the alarms in your switch that are about this cabinet. See if it points to something that may have been over looked. You may even want to change the slot that you have your switch node interface pack is in, and move your fiber transceiver to that spot on the backplane.

Mike Jones
LSUHSC