RE: [Sigtran] ISDN BA layer 1 activation
"Miesch, Thomas" <Thomas.Miesch@keymile.com> Tue, 30 March 2004 23:57 UTC
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Subject: RE: [Sigtran] ISDN BA layer 1 activation
Date: Mon, 22 Mar 2004 10:55:28 +0100
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Thread-Topic: [Sigtran] ISDN BA layer 1 activation
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From: "Miesch, Thomas" <Thomas.Miesch@keymile.com>
To: sigtran@ietf.org
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Hello Ken Thank you for your answer. But there still remains a question or a point where I would like some clarification. In europe normally the ISDN BRI is deactivated and will be activated on a call by call basis. For originating calls there are no problems, the activation can be done without problems. But for terminating calls we must activate the layer 1, before we can send a message to the subscriber. How can this be done? One way would be we listen to the layer 3 setup message and if we receive it we activate layer 1. The setup will be sent in a DL-UNIT-DATA. Is this the way to go or are there other recommend solutions? The activation can take several seconds (up to 7s), so the timeout for an response to the setup message must be large enough in the SG? Best Regards Thomas >-----Original Message----- >From: Ken Morneault [mailto:kmorneau@cisco.com] >Sent: Friday, March 19, 2004 3:50 PM >To: Miesch, Thomas; sigtran@ietf.org >Subject: Re: [Sigtran] ISDN BA layer 1 activation > > > >Thomas, > >The MG is responsible for Layer 1 >activation. It is out of scope for >IUA. > >Regards, > >Ken > > >At 03:39 PM 3/19/2004 +0100, Miesch, Thomas wrote: > >> >> >>Hello >> >>After reading of the megaco standards and the IUA RFC. >> >>The question remains how the ISDN BA layer 1 activation is done. >> >>I didn't find any informations about it. >> >> >> >>As I understand there was a proposed IL1A draft (draft-bouwen-sigtran- >il1a-01.txt) by Mr. Bouwen and Mr. Morneault. >> >>But this paper has expired and is no longer valid. >> >>Somewhere I read that that paper is not in the focus of the Sigtran >working group >> >>and will be handled only as an extension for the IUA standard. >> >>But in the new draft of the IUA standard (draft-ietf-sigtran-rfc3057bis- >00.txt) >> >>I didn't saw any information about that issue. >> >> >> >>So the questions stay: >> >>How should the layer1 activation be handled? >> >>Who is responsible for the activation of the ISDN BA Layer 1, the MGC or >the MG? >> >>If the responsibility is by the MGC, how the Layer 1 activation is done? >> >>In which document the activation sequence is described? >> >> >> >> >> >>Best Regards >> >>Thomas Miesch >> >> > _______________________________________________ Sigtran mailing list Sigtran@ietf.org https://www1.ietf.org/mailman/listinfo/sigtran
- [Sigtran] ISDN BA layer 1 activation Miesch, Thomas
- Re: [Sigtran] ISDN BA layer 1 activation Ken Morneault
- RE: [Sigtran] ISDN BA layer 1 activation Ken Morneault
- RE: [Sigtran] ISDN BA layer 1 activation Miesch, Thomas
- RE: [Sigtran] ISDN BA layer 1 activation Miesch, Thomas