This apparently is giving me grief on some of my 3300s.
I know most of you will never have heard of this protocol (I didn't until today) but I'm throwing this out there in case someone has.
Has anyone see an explanation, and I mean bit by bit, of the ZBTSI protocol?
It does the same thing as B8ZS but differently.
You *might* see this as an option on a T1 testing tool. Mine doesn't have it. Newer ones might.
Here's what happens:
I have a T1 with 24 PLARs on them. (E&M Immediate Start)
If ZBTSI is enabled anywhere along the line from here to the CO or far end, it makes my 3300 appear to make all 24 channels go off hook outbound at the same time even though it isn't.
It's taken a long time to come to this conclusion. I actually had to talk to a guy who wrote the book on T1s (Literally) and he clued me on the protocol. I just haven't see a diagram or bit by bit explanation for what it's doing.
Ralph