Since Voxbeam doesn't use SIP Registration, it would probably be better to configure Voxbeam on a Voice Gateway, saving SP2 for a SIP service provider that does use SIP registration:
Voice Services -> Gateways and Trunk Groups -> Voice Gateway3
Name : Voxbeam
AccessNumber :
sbc.voxbeam.comDigitMap : (<ppppppp>(<1aaa>[2-9]xxxxxx|<1>[2-9]xxxxxxxxx|1xxxxxxxxxx|<011:>xx.))
AuthUserID : (CallerID)
where ppppppp is 0011103 for standard routes and 0011101 for premium routes, and aaa is your local area code.
If you don't have a SIP provider configured on SP2, configure SP2 as follows:
Service Providers -> ITSP Profile B -> SIP -> ProxyServer : 127.0.0.1
Voice Services -> SP2 Service -> X_ServProvProfile : B
Voice Services -> SP2 Service -> X_RegisterEnable : (unchecked)
Voice Services -> SP2 Service -> AuthUserName : (put anything here)
Voice Gateway3 can then be integrated as service route access code **3:
Physical Interfaces -> PHONE Port -> DigitMap:
([1-9]x?*(Mpli)|[1-9]S9|[1-9][0-9]S9|911|**0|***|#|**1(Msp1)|**2(Msp2)|
**3(Mvg3)|
**8(Mli)|**9(Mpp)|(Mpli))
Physical Interfaces -> PHONE Port -> OutboundCallRoute:
{([1-9]x?*(Mpli)):pp},{(<#:>|911):li},{**0:aa},{***:aa2},{(<**1:>(Msp1)):sp1},{(<**2:>(Msp2)):sp2},
{(<**3:>(Mvg3)):vg3},{(<**8:>(Mli)):li},{(<**9:>(Mpp)):pp},{(Mpli):pli}