Funny answer --> Not the 102, 103 or 104 carrier.
::Rim shot:: (Ok, I won't quit my day job!) :rofl:

But it is just a number to differentiate between multiple carriers with the same A & Z CILLI codes.

So you could have these:

101/T1ZF/BSTNMACOW03/BSTNMAHADC1
102/T1ZF/.....
103/...
104/...

(You get the idea) wink


I Love FEATURE 00