Re: [Serusers] SER+Asterisk+NAT. Need a working example or need to talk about it. - sr-users

28 Feb 2005

Charles Wang wrote:

...
 Dear Alexey:

Can you send me your config about ser.cfg & sip.conf, extensions.conf
for me to reference?

My UA1(under NAT) can make a call to Asterisk via SER, then Asterisk
forward the call to PSTN(behind a CISCO 5300).

But only UA1 can talk to PSTN side, PSTN side can't talk to UA1.

Here are my sip.conf & extensions.conf.

I just want to make a call to PSTN using a UA behind NAT.

Is any config necessary to modify in my goal?

First of all, you need to add some record for incoming calls from CISCO 
to sip.conf...

[from-cisco]
type=peer
context=cisco
host=61.220.190.243

Next, you need to add [cisco] section to your extensions.conf...

[cisco]
exten => _., 1, Answer
exten => _., 2, Dial(sip/ser/USER_NAME_HERE)
exten => _., 3, Hangup

Note: It's for all calls be forwarded to same user... If you need (as i 
think) some more efficient scheme, use more extensions in you 
extensions.conf... Or do semething like that:

[cisco]
exten => _XXXXXXXXXX,1,Dial(SIP/${EXTEN}@${SERADDRESS},20,r)

-- 
/Scoundrel