[asterisk-ss7] Received MSU in invalid state 1

[Adriel Cerrud]

Hi, i am installing a SS7 in asterisk 1.6 and dahdi 2.0
I ve got this error:
Oct 10 12:52:51] ERROR[3975]: chan_dahdi.c:9871 dahdi_ss7_error:
Received MSU in invalid state 1

Digium card port is green and when i am dialing the softphone ring but
the dst phone not ring. What happend?

this is my chan_dahdi config:
ss7type=itu
linkset=1
pointcode=10567
adjpointcode=10581
defaultdpc=10619
ss7_calling_nai=national
ss7_called_nai =national
networkindicator=national_spare
sigchan = 16
cicbeginswith = 1
channel=1-15

this is the information email of my SS7 Provider
Configuration: 
SS7 ITU, ISUP
pointcode  10567
adjpointcode  2955 hex /10581 dec
defaultdpc  297B hex /10619 dec
ss7_calling_nai national
networkindicator   NA0 (national 0)
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