Hi,
   Well, you do not really need any trunk at Kamailio, all you have to do is get your NGN to be able to allow access to your Kamailio IP address, and it can SIP PING it i.e sending OPTIONS to see if it alive, if required.  It will do (Kamailio to NGN calls), similarly you can do the same for NGN to Kamailio calls as well, your Kamailio sever should be able to authenticate your NGN IP and do the routing as per your requirement.


On Wed, Mar 26, 2014 at 9:32 PM, Rizwan Khan <rizkhan@gmail.com> wrote:

Thanks for the help.

Is it possible to have a direct sip trunk from kamailio to an NGN without involving asterisks? I will be using NGN to route outside calls for landlines and mobile.

On Mar 24, 2014 9:37 PM, "Rainer Piper" <rainer.piper@soho-piper.de> wrote:
Hi Rizwan,

that is the right approach .

For adding an Asterisk as SBC you can use the section route[PSTN] at kamailio.cfg

#!ifdef WITH_PSTN
# PSTN GW Routing
#
# - pstn.gw_ip: valid IP or hostname as string value, example:
# pstn.gw_ip = "10.0.0.101" desc "My PSTN GW Address"
#
# - by default is empty to avoid misrouting
pstn.gw_ip = "IP_OF_YOUR_ASTERISK"
pstn.gw_port = "5060"
#!endif

Make kamailio IP as trusted IP in your asterisk sip.conf like

[kamailio]
type=friend
context=outgoing-kamailio
host=[IP_OF_YOUR_KAMAILIO]
port=5060
qualify=no
;trustrpid=yes
;sendrpid=yes
deny=0.0.0.0/0.0.0.0
permit=[IP_OF_YOUR_KAMAILIO]

add outgoing trunk Data to your asterisk sip.conf and extensions.conf section [outgoing-kamailio]

and that is it.


Regards
Rainer




Am 24.03.2014 16:23, schrieb Rizwan Khan:

Is my question not well phrased? Or is too general? Can anyone help with a document or an older thread which could help me?

Thanks 

On Mar 24, 2014 1:57 PM, "Rizwan Khan" <rizkhan@gmail.com> wrote:
I want the following setup:

1 Kamailio server to handle internal calls (A/V), IM and Presence.
1 Asterisk or any other way to communicate with an NGN where I will create the SIP Trunk to route calls outside of the network.

Is this the right approach or there is a way to directly communicate with the NGN to make a SIP trunk by using some external modules. 

Any guidelines will be highly appreciated.


Rizwan Khan




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--
Regards

M. Salman Zafar

VoIP Professional