[cisco-nas] AS5300 - inline with PBX

[Francisco (fxdomin2)]

Can anyone suggest where I should start reading on how to
configure an AS5300 such that I can place it in-line with
our existing Nortel Option 11 PBX (AS5300 between the
Option11 and PSTN network)?

Now:
PSTN---pri---Option11

Want:
PSTN---pri---AS5300---pri---Option11