Hi, Steve:

You are right that the situation will look like scenarios you have proposed in this email. We would appreciate any Ericsoon's proposals regarding this. It has been long overdue to have something from Ericsson's. We also discussed this in the SG 16 in Feb'00 and got assurances from Ericsson they would bring some contributions. Yet, it is NOT too late. (by the way AT&T contributions also provided many of those scenarios).

Please note that a domain consists of a single or more zones. A zone may have many networks (e.g., IP network addresses). A mobile entity may have its home and foreign network in its home zone as well.

From the conference call, it was clear that we may focus our discussion with

a very simple case first.

If anyone else has any thoughts, please, like Steve, let us know.

We appreciate Steve's inputs.

Best regards,

Radhika R. Roy AT&T H.323 Ad Hoc Mobility Group

-----Original Message----- From: Stephen Terrill [mailto:stephen.terrill@ERICSSON.COM] Sent: Thursday, March 23, 2000 3:01 PM To: ITU-SG16@MAILBAG.INTEL.COM Subject: [Mobility]:Ideas from phone conference on scenarios

Hi All,

After the phone conference today, I think that we need to cover the following for the "All-H.323 Scenario).

A(home) -> B(home), A & B from same domain A(home) -> B(home), A & B from different domain

A(home) -> B(roaming), A & B from same domain A(home) -> B(roaming), A & B from different domain

A(roaming) -> B(home), A & B from same domain A(roaming) -> B(home), A & B from different domain

A(roaming) -> B(roaming), A & B from same domain A(roaming) -> B(roaming), A & B from different domain

This could be represented as follows in the document.

xx.1 Registraion xx.1.1 Registration from Home domain xx.1.2 Registration from romaing domain xx.2 Location Update xx.2.1 xx.3 Call establishment xx.3.1 Call originating from terminal at home domain xx.3.2 Call originating from terminal at roaming domain xx.3.3 Call terminating to terminal at home domain xx.3.4 Call terminating to terminal at roaming domain xx.3.5 Call to PSTN from terminal at home domain xx.3.6 Call to PSTN from terminal at roaming domain.

Well, this is what I was trying to say in the phone conference.

Regards,

..//Steve