Subject: [Megaco] Megaco Queries

From: "B Venkat S.R Swamy" <[email-masked]>
Date: Fri, 10 Mar 2006 09:34:04 +0530

Hi

Following are some clarifications that we need from Megaco Maillist:

1)Reporting "Designed to be extended only" Packages in Audit Reply:

Needed a clarification to be sure that we do not face any interop problems,

on whether packages mentioned as "Designed to be extended only"

can be reported in Audit Value/AuditCapabilities reply or not.

For example TONEDET-2 and TONEGEN-2 are designed to be

extended only packages and hence should not be used directly.

As per the protocol it is clearly mentioned that MG shall not publish the packages when reporting packages as per the section 12.1.1 H248.1 V3

***************

Designed to be extended only (Optional): Yes

This indicates that the package has been expressly designed to be extended by others, not to be directly referenced.

For example, the package may not have any function on its own or be nonsensical on its own. The MG shall not publish this PackageID when reporting packages.

***********************

2) MG behaviour on Version or Profile Negotiation failure for UDP transport

Scenario:

1> MG only supports V2 and sends Registration message to MGC with ServiceChange request, containing version ServiceChange version as 2,

2> MGC only supports lower version and hence replies with version 1,

3> Since MG does not comply with lower version, Version negotiation fails and should disconnect the transport connection with MGC.

Query:

For UDP transport, how MGC comes to know about failure of registration procedure at MG end,

Is it correct for MG to send ServiceChange with method=FORCED to disconnect the association. This is not clearly stated in the protocol.

or

MGC will only come to know when MG stops responding to subsequent messages from MGC.

regards

B Venkat S.R Swamy

Senior Technical Leader

Flextronics Software Systems

Phone: +91-124- 4176213

Fax: +91-124-4300247

web: www.flextronicssoftware.com

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