Help setting anonymous calls to yes

General Help
1

Hi

I hace a problem with the incoming call, how can i set to yes the option allow anonymous???
Or what other thing do you recomend??

Thanks

2

Whats the problem?

3

well i have configured my sip trunk with these parameters:

type=friend
context=from-trunk
host=10.71.19.10
disallow=all
allow=ulaw&alaw
nat=no
canreinvite=no
qualify=yes
insecure=very
fromdomain=10.71.19.10
dtmf=rfc2833
allowguest=yes

I am able to make outcoming calls from an asterisk extension, but y can’t make incoming calls. I was thinking that maybe the problem was ther username or secret what do you think