I have a tellabs 2572 echo can wired and setup according to the instructions in http://www.voip-info.org/tiki-index.php?page=Tellabs+Hardware+Echo+Cancellers . I added the echo can between my zaptel card and my adit 600 channel bank. I used the straight thru and crossover cables as instructed.

I get a Yellow alarm on my zaptel card (digium x100p) and on the echo can under *Send In* the rem light is yellow and under *Rcv In* the local light is red. Are there any changes I should be making to my adit 600 setup or my zaptel.conf?

on the echo can option 20 is 5(ESF), 60 is 1(B8ZS), and 63 is 0

my zaptel.conf
  fxsks=1-8
  fxoks=9-48
  span=1,1,7,esf,b8zs
  span=2,1,7,esf,b8zs

adit 600
--------------------------------------------------------------
SLOT A:
Settings for DS1  1:
   Circuit ID:              CAC DS1# A:1
   Up/Down:                 UP
   Framing:                 ESF
   Line Coding:             B8ZS
   Line Build Out:          DSX-1 EQUALIZATION FOR 0-133 ft. (CSU 0dB)
   Loop Code Detection:     ON
   Loopback:                OFF
   FDL Type:                None

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