The newer ones looked exactly like the other Panamax Towermax modules, just with Lucent or Avaya's logo on them and a comcode. I'm sure that they are secondary only.

I checked some of the older Tii IROBS today and sure enough, all four pairs were protected. Honestly, I've never looked inside one before until today, but sure enough it has four 1-pair gas tube protectors, grounding means and solid-state secondary protection all in one outdoor protector enclosure. Kind of nice.


Ed Vaughn, MBSWWYPBX