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Alex R.S.M

Hi,

Can openSIPS reply with an ACK to 200OK response for INVITE request?
If it can, what function can generate ACK message?
Apparently both t_reply() and sl_send_reply() functions generate response message and not an ACK.
                                 
  UAC                 Proxy              UAS
   |    INVITE          |                 |
   |------------------->|                 |
   |    100 Trying      |                 |
   |<-------------------|     INVITE      |
   |                    |---------------->|
   |                    |   180 Ringing   |
   |                    |<----------------|
   |     180 Ringing    |                 |
   |<-------------------|                 |
   |                    |     200 OK      |
   |                    |<----------------|
   |                    |      ACK        |
   |                    |---------------->|
   |      200 OK        |                 |
   |<-------------------|                 |

Thanks,
Alex

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Re: (no subject)

Brett Nemeroff
That should come from the uac, not opensips

Sent from my Verizon Wireless BlackBerry

-----Original Message-----
From: Alex R.S.M <[hidden email]>

Date: Wed, 28 Jan 2009 13:00:39
To: opensips<[hidden email]>
Subject: [OpenSIPS-Users] (no subject)



Hi,

Can openSIPS reply with an ACK to 200OK response for INVITE request?
If it can, what function can generate ACK message?
Apparently both t_reply() and sl_send_reply() functions generate response message and not an ACK.
                                 
  UAC                 Proxy              UAS
   |    INVITE          |                 |
   |------------------->|                 |
   |    100 Trying      |                 |
   |<-------------------|     INVITE      |
   |                    |---------------->|
   |                    |   180 Ringing   |
   |                    |<----------------|
   |     180 Ringing    |                 |
   |<-------------------|                 |
   |                    |     200 OK      |
   |                    |<----------------|
   |                    |      ACK        |
   |                    |---------------->|
   |      200 OK        |                 |
   |<-------------------|                 |

Thanks,
Alex

_________________________________________________________________
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http://windowslive.com/howitworks?ocid=TXT_TAGLM_WL_t2_hm_justgotbetter_howitworks_012009
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Re: (no subject)

stefanoIT
In reply to this post by Alex R.S.M

The correct way is this...
                                 
  UAC                 Proxy              UAS
   |    INVITE          |                 |
   |------------------->|                 |
   |    100 Trying      |                 |
   |<-------------------|     INVITE      |
   |                    |---------------->|
   |                    |   180 Ringing   |
   |                    |<----------------|
   |     180 Ringing    |                 |
   |<-------------------|                 |
   |                    |     200 OK      |
   |                    |<----------------|
   |      200 OK        |                 |
   |<-------------------|                 |
   |    ACK          |                 |
   |------------------->|                 |
   |                    |      ACK        |
   |                    |---------------->|

Stefano

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