By default, 911 calls go out the LINE Port (PSTN). To have 911 calls go out SP2 instead, make the following change:
Physical Interfaces -> PHONE Port -> OutboundCallRoute:
Original:
{([1-9]x?*(Mpli)):pp},{(<#:>|911):li},{**0:aa},{***:aa2},{(<**1:>(Msp1)):sp1},
{(<**2:>(Msp2)):sp2},{(<**8:>(Mli)):li},{(<**9:>(Mpp)):pp},{(Mpli):pli}
Changed:
{([1-9]x?*(Mpli)):pp},{(<#:>):li},{911:sp2},{**0:aa},{***:aa2},{(<**1:>(Msp1)):sp1},
{(<**2:>(Msp2)):sp2},{(<**8:>(Mli)):li},{(<**9:>(Mpp)):pp},{(Mpli):pli}
If you make this change to the OBi locally, also change:
System Management -> Auto Provisioning -> Auto Provisioning -> Method : Disabled.