Hi,
I’m new of this forum and i don’t have strong skill to asterisk 
This is my sistem
Ubuntu 9.01
Astyerisk 1.6.0.6
Dahdi 2.2.0
OpenVox A400P + 1FXO
Can yuo help me to configuration astersik/dahdi for incominc the SIP call to PSTN line.
I don’t have problem to call SIP to SIP in my Lan and PSTN call to SIP 
Thanks
Maybe, if you provide the information needed to debug the problem.
Hi david55
thanks for your interest in my problem.
I have configuration 2 SIP phone.
This is the customization for the default file of daidhi end asterik
chan_dahdi.conf
context=from-pstn
signalling=fxs_ks
callerid=asreceived
group=0
channel=1
sip.conf
[a]
type=friend
host=dynamic
language=it
context=home
nat=yes
dtmfmode=rfc2833
dial=SIP/101
callerid=a <101>
username=a
secret=a
[c]
type=friend
host=dynamic
language=it
context=home
nat=yes
dtmfmode=rfc2833
dial=SIP/102
callerid=b <102>
username=b
secret=b
extensions.conf
[home]
exten = 101,1,Dial(SIP/a,20)
exten = 101,2,Hangup
exten = 102,1,Dial(SIP/c,20)
exten = 102,2,Hangup
[from-pstn]
exten = s,1,Dial(SIP/a,20)
exten = s,2,Hangup
a to c ok
pstn call to a ok
a to pstn line KO
Can you help me?
There are no Dial application calls referencing the dahdi channels!
You can write me a sample configuration to solve my problem?