[SR-Users] IMS early media

[Tsvetan Filev]

Here is my current zone file:

$ORIGIN mnc001.mcc001.3gppnetwork.org.
$TTL 1W
@                       1D IN SOA       localhost. root.localhost. (
                                         1               ; serial
                                         3H              ; refresh
                                         15M             ; retry
                                         1W              ; expiry
                                         1D )            ; minimum

                         1D IN NS        ns
ns                      1D IN A         10.82.10.56

pcscf                   1D IN A         10.82.10.56
_sip._udp.pcscf         1D SRV 0 0 5060 pcscf
_sip._tcp.pcscf         1D SRV 0 0 5060 pcscf

icscf                   1D IN A         10.82.10.56
_sip._udp               1D SRV 0 0 4060 icscf
_sip._tcp               1D SRV 0 0 4060 icscf
_sip._udp.ims           1D SRV 0 0 4060 icscf
_sip._tcp.ims           1D SRV 0 0 4060 icscf

scscf                   1D IN A         10.82.10.56
_sip._udp.scscf         1D SRV 0 0 6060 scscf
_sip._tcp.scscf         1D SRV 0 0 6060 scscf

as                      1D IN A         10.82.10.56
_sip._udp.as            1D SRV 0 0 5062 as
_sip._tcp.as            1D SRV 0 0 5062 as

hss                     1D IN A         10.82.10.56


How do I modify it in order to make this work ?

Tnx.

On 28.01.19 г. 11:50 ч., Mojtaba wrote:
> Hi Tsvetan,
> Why do you send call back to S-CSCF? You should send call back to 
> I-CSCF.  Actually in resolve of domain "mnc001.mcc001.3gppnetwork.org" 
> <mailto:SIP/972551000002 at mnc001.mcc001.3gppnetwork.org,20>, The 
> ICSCF's IP should be returned.
>  Make sure entry SRV recordd in DNS server are true.
> This kind of call back to IMS is true, But make sure you won't have 
> any issue in DNS resolve.
>   exten => 
> 972551000002,1,Dial(SIP/972551000002 at mnc001.mcc001.3gppnetwork.org,20 
> <mailto:SIP/972551000002 at mnc001.mcc001.3gppnetwork.org,20>);
>
> With Regards.Mojtaba
> On Mon, Jan 28, 2019 at 12:34 PM Tsvetan Filev 
> <tsvetan.filev at inno-networks.com 
> <mailto:tsvetan.filev at inno-networks.com>> wrote:
>
>     Hi Mojtaba.
>
>     I implemented the AS way and was able to play sound to the caller
>     but In order to continue the call and send the invite to SCSCF I
>     need to use proxy in the Dial application which is a problem
>     (Asterisk is B2BUA not a proxy).
>     I found this old question here
>     https://community.asterisk.org/t/how-can-i-configure-asterisk-to-act-like-a-sip-proxy-server/18464
>     that describes exactly the same issue.
>     Here is my dial plan:
>
>     exten => 972551000002,1,Progress()
>     exten => 972551000002,n,Playback(vm-starmain, noanswer)
>     exten => 972551000002,n,Wait(3)
>     exten => 972551000002,n,Hangup()
>       ; This will send the call to the pcscf again
>       ;  exten =>
>     972551000002,1,Dial(SIP/972551000002 at mnc001.mcc001.3gppnetwork.org,20
>     <mailto:SIP/972551000002 at mnc001.mcc001.3gppnetwork.org,20>);
>       ; This will send the call to scscf but it will be rejected as
>     domain not supported
>       ;  exten =>
>     972551000002,1,Dial(SIP/972551000002 at scscf.mnc001.mcc001.3gppnetwork.org,20
>     <mailto:SIP/972551000002 at scscf.mnc001.mcc001.3gppnetwork.org,20>);
>
>     Can I use kamailio as an AS and implement the same ?
>
>     Regards.
>
>     On 22.12.18 г. 0:06 ч., Mojtaba wrote:
>>     Hello Tsvetan.
>>     Actually you could use SIP Early media in AS and also with cscf.
>>     If you choice the first way, i think it is very simple and
>>     strightforward because you just use early media functions on your
>>     AS. For example in Astrisk you could use Progress application and
>>     'm' option in Dial application in your dialplan.
>>     In second way you should check in Reply-Route block,if you got
>>     180 ringing,  you have to use rtpproxy-stream funtion for doing
>>     sip early.
>>
>>     Wih Regards.Mojtaba Esfandiari.S
>>
>>     On Fri, 21 Dec 2018, 16:34 Tsvetan Filev,
>>     <tsvetan.filev at inno-networks.com
>>     <mailto:tsvetan.filev at inno-networks.com>> wrote:
>>
>>         Hi all.
>>
>>         I want to use SIP early media to play music to the caller in
>>         kamailio
>>         IMS installation like this:
>>         http://www.sharetechnote.com/html/IMS_SIP_EarlyMedia.html
>>
>>         I looked a little bit but didn't find ready solution. The
>>         information is
>>         vague on this topic.
>>         Should this be done through a module or application server ?
>>         May I need to handle ringing in onreply_route and send OK
>>         with SDP to
>>         the caller in SCSCF ?
>>
>>         Regards.
>>
>>
>>         _______________________________________________
>>         Kamailio (SER) - Users Mailing List
>>         sr-users at lists.kamailio.org <mailto:sr-users at lists.kamailio.org>
>>         https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>
>>
>>     _______________________________________________
>>     Kamailio (SER) - Users Mailing List
>>     sr-users at lists.kamailio.org  <mailto:sr-users at lists.kamailio.org>
>>     https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>
>
>
> -- 
> --Mojtaba Esfandiari.S
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