dahdi system.conf

span=1,0,0,esf,b8zs
#fxoks=1-16,21-24
#fxoks=1-24
fxoks=1-20
fxsks=21-24
#echocanceller=none,1-24

# Span 2: Tor2/0/2 "Tormenta 2 (PCI) Quad T1 Card 0 Span 2" ESF/B8ZS RED
span=2,0,0,esf,b8zs
bchan=25-47
dchan=48

# Span 3: Tor2/0/3 "Tormenta 2 (PCI) Quad T1 Card 0 Span 3" ESF/B8ZS RED
span=3,0,0,esf,b8zs
bchan=49-71
dchan=72

# Span 4: Tor2/0/4 "Tormenta 2 (PCI) Quad T1 Card 0 Span 4" (MASTER) ESF/B8ZS RED
span=4,0,0,esf,b8zs
bchan=73-95
dchan=96

# Global data

loadzone        = us
defaultzone     = us