We have run into a situation where our Quadro 6L has failed during a storm. I have a backup of our Quadro 6L. We only use 2 phone lines on the Quadro 6L.

I wanted to see what other Quadro models are usable for me to replace the 6L and utilise the 6L backup file we have.

I have found a Quadro 4Li which is avaliable to me and at an affordable price. Would this be a suitable replacement and can the 6L backup be used on this device?

Is there a general rule of thumb as to which Quadro devices my backup is usable on?

Thanks for your help