I think he was confused by the fact that there are two boxes that are SLA. There's the old school SLA, and then there's the IP SLA.
The old SLA takes a digital link in, puts out two analog lines, and has jumpers.
The IP SLA has ethernet in, puts out a single analog line. Which is what you seem to have.
The SLA predates Inter-tel use of 802.11af PoE. It requires the 24V inilne power wall brick. The 48V version won't work, like the 8662 has. The power jack may or maynot exist depending on version, but the official way to make it work is the inline power brick.
Again, depending on version, it may have the factory default button or not..
It programs just like an IP Phone +, connecting to your IPRC card. To default it for the older rev, plug and unplug the ethernet cord 6 times within 3 seconds.
Not the easiest thing to setup or use, you have to be familiar with IT's other VOIP products for the most part. The manual breezes over it, mostly a picture of it, and what the LEDs do.
