HI,

I'm not sure if .17 is Freeswitch and who is 12 and wh 13 but I see that on first 480 no answer To:.... tag is changed:

1. 2016/11/18 11:30:42.698223 11.23.16.13:5060 -> 11.23.16.12:5060
2. SIP/2.0 480 NO_ANSWER
3. Via: SIP/2.0/UDP 11.23.16.12:5060;branch=z9hG4bKlj0b84100gnjom3o1320.1
4. From: <sip:+263733209456@11.23.16.12:5060;user=phone>;tag=09002861124617
5. To: <sip:264812778555@11.23.16.13:5060;user=phone>;tag=f949601897706458a5166612fe67c373-1439
6. Call-ID: 03cS323551118140bcGhEfCmJej@RBM2S1.MSS.MTN.CO.ZA
7. CSeq: 986549121 INVITE
8. Content-Length: 0

WHich I think you should avoid, changing tags. I think this might be the problem.

On Fri, Nov 18, 2016 at 1:07 PM, devang nathwani <devang.nathwani31589@gmail.com> wrote:

Hello,

Here are the sip traces of two legs

leg1 UAC -> proxy -> media

leg2 media -> proxy -> provider

leg1
http://pastebin.com/G0jnF75t

leg2
http://pastebin.com/299dZyN4

from leg1,

when freeswitch(media) is sending back 480 temporarily unavailable after 183 session progress, UAC is sending ack and bye, now in return freeswitch is sending '481 Call Does Not Exist'

my question is why? why freeswitch is sending 481 in return of ack and bye?

here,

11.23.16.12 is UAC

11.23.16.13 is Opensips(Proxy)

11.23.16.16 is Freeswitch(Media)

Thanks,

Devang Nathwani

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--

Regards,

Mirko

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