Subject: [Megaco] 答复: [Megaco] question about disconnection message from MGW

From: 杨先波 <[email-masked]>
Date: Thu, 12 Feb 2004 10:31:43 +0800

Then what do you think of "resynchronize its state with the MG's"?
what does resynchronize mean?
what MGC should deal with audit.reply message, such as mediadesc, signalsdesc,
eventsdesc, statisticsdesc and other?

-----原始邮件-----
发件人: Zhao Bo [mailto:[email-masked]]
发送时间: 2004年2月12日 10:06
收件人: 杨先波
抄送: [email-masked]
主题: Re: [Megaco] question about disconnection message from MGW

Hi, please refer to section 7.28 of H.248.1, description of ServiceChangeMethod "Disconnected":

Disconnected: always applied with the Root TerminationID, indicates that the MG lost
communication with the MGC, but it was subsequently restored to the same MGC (possibly
after trying other MGCs on a pre-provisioned list). Since MG state may have changed, the
MGC may wish to use the Audit command to resynchronize its state with the MG's.

----- Original Message ----- 
From: "杨先波" <[email-masked]>
To: "Kevin Boyle" <[email-masked]>; <[email-masked]>
Sent: Thursday, February 12, 2004 9:02 AM
Subject: Re: [Megaco] question about disconnection message from MGW

> 
> Thank for your reply, but if MGW send Disconnection indication to MGC, which means
> MGW disconnected from MGC just now, now MGW restores connection with MGC, then
> maybe state of the MGW  is different from what MGC regarded , so MGC need audit MGW
> to sychornize with it.  All above can be found in the document: draft-ietf-megaco-callflows-02.txt,
> which reads as below:
> 
> The MG issues the disconnection method of Service Change when it lost
> the communication with MGC and later regains it. The MGC normally
> generates an Audit message to assess the state of the terminations
> before and after the disconnection. The Audit command enables MGC to
> synchronize its state with the MG's state.
> 
> 
> Though it is a draft, but I think it is reasonable. What about your opinion?
> Thanks for your reply again!
> 
> -----原始邮件-----
> 发件人: Kevin Boyle [mailto:[email-masked]]
> 发送时间: 2004年2月12日 2:31
> 收件人: ÑîÏè²¨; [email-masked]
> Title: RE: [Megaco] question about disconnection message from MGW
> 
> 
> This would all depend upon what the MGC is trying to accomplish.  How the
> MGC would use an audit depends heavily upon what function it performs.
> 
> Note that there are no requirements as to when or how audits are performed.
> Audits are a tool to be used as appropriate by an implementation.
> 
> Kevin 
> ________________________________
> 
> From: [email-masked] [mailto:[email-masked]] 
> Sent: Wednesday, February 11, 2004 3:28 AM
> To: [email-masked]
> Subject: [Megaco] question about disconnection message from MGW
> 
> 
> Hi,all
> if MGC receives a message svc.req(ROOT,Method=Disconnection) ,
> I am not sure if MGC should sends audit command after svc.reply,
> and if MGC sends audit to MGW, how MGC should use audit.reply,
> that is what should MGC deal with the reply message. Thanks a lot!
>                                    Simba
> 
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