Re: Control of T.38-to-V.152 interworking; RE: About fax control mode

Albrecht,

 

Thanks for remind me.

Fax really made me headache...

 

Best Regards,

Gary

 

 

 

  _____  

From: Schwarz Albrecht [mailto:[email protected]] 
Sent: Wednesday, September 02, 2009 1:45 AM
To: Gary Li; Deepak Bissa; [email protected]
Subject: Control of T.38-to-V.152 interworking; RE: [Megaco] About fax
control mode

 

Gary,

 

guess your outlined control modes are consider the positioning of an H.248
MG between an IP and PSTN/ISDN domain.

Concerning the next scenario of IP-to-IP interworking, you may have a look
in Draft V.IP2IP-VxF.

There's an H.248 example flow in Appendix II ...

 

-Albrecht

 

TD 13R1 (WP 1/16)

Draft ITU-T Rec. V.IP2IP-VxF - Realtime Facsimile Services for IP peering:
Procedures for T.38-to-V.152 interworking

Appendix <outbind://37/#_Toc219275970>  II H.248 bearer establishment
procedure examples  14

II.1 <outbind://37/#_Toc219275971>     Introduction  14

II.2 <outbind://37/#_Toc219275972>     MG state transitioning: MGC-strict
controlled method versus MG autonomous transitioning  14

II.3 <outbind://37/#_Toc219275973>     Example network model 14

II.3.1 <outbind://37/#_Toc219275974>        H.248 decomposed gateway model
14

II.3.2 <outbind://37/#_Toc219275975>        Example media capability
negotiation process on call/session control level 15

II.4 <outbind://37/#_Toc219275976>     Example signalling  17

II.4.1 <outbind://37/#_Toc219275977>        Auditing supported capabilities
17

II.4.2 <outbind://37/#_Toc219275978>      Creating a V.152-to-T.38 Context
17

 


  _____  


From: [email protected] [mailto:[email protected]] On Behalf Of
Gary Li
Sent: Mittwoch, 26. August 2009 07:00
To: 'Deepak Bissa'; [email protected]
Subject: Re: [Megaco] About fax control mode

Hi Deepak,

 

Yes, I got the answer at the Annex E2.2.

Thanks a lot,

 

Regards,

Gary

 


  _____  


From: Deepak Bissa [mailto:[email protected]] 
Sent: Wednesday, August 26, 2009 11:36 AM
To: Gary Li; [email protected]
Subject: RE: [Megaco] About fax control mode

 

Hi Gary,

ITU-T Rec. T.38 (Appendix III) describes the softswitch control and MG
Autonomous switchover to fax.

Packages used in softswitch control fax e.g. ctyp, fax and ipfax are
published in ITU-T Rec. H.248.2.

 

With regards,

Deepak Bissa


  _____  


From: [email protected] [mailto:[email protected]] On Behalf Of
Gary Li
Sent: Wednesday, August 26, 2009 7:23 AM
To: [email protected]
Subject: [Megaco] About fax control mode

 

Hi,

 

About fax mode, there are four control mode.

1. non-control 

2. RTCP control 

3. softswitch control

4. Auto VBD(gateway self-negociate)

 

Can any one help me clarify the means of above fax mode?

And what the MGC behaviour when choose the mode?

 

PS: I can't find it at any IETF or ITU document. If anyone knows, pls tell
me.

Any information will be appreciated!

Thanks

 

Regards,

Gary

 


  _____  


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