Frank, Paul,

Mode is defined in H.245 as:

Mode: A mode is a set of elementary streams that a terminal is transmitting, intends to transmit, or would like to receive.

and elementary stream is defined as:

Elementary Stream: Elementary Stream is a generic term for a coded video, coded audio or other coded bitstream.

Best regards

Mike

-------------------- Mike Nilsson Advanced Video Services B81 Room 102 pp14 BT Advanced Communications Technology Centre Adastral Park, Martlesham Heath, Ipswich, IP5 3RE, UK Tel: +44 1473 645413 Mobile: +44 7808 635412 Fax: +44 1473 646589 Email: mike.nilsson@bt.com

-----Original Message----- From: Frank Derks [SMTP:frank.derks@PHILIPS.COM] Sent: Friday, January 26, 2001 1:04 PM To: ITU-SG16@MAILBAG.INTEL.COM Subject: Re: The meaning of "mode" in the H.323 Recommendation?

Paul,

the sections I was referring to are the following:

• 6.2.8.1, 5th paragraph: "The transmitting terminal assigns each

individual mode ..."

• 6.2.8.1, 6th paragraph: "... audio modes ..."
• 6.2.8.1, 7th paragraph: "... indicates a set of modes ..."
• 6.2.8.1, 1st paragraph after the notes: "... dependencies between

operating modes ...", "...different sets of modes ..."

• 6.2.8.2, 3rd paragraph: "... certain symmetrical modes ...", " ...

using a particular mode ..."

Undoubtedly it appears in more places.

Something else that struck as strange, was section 6.2.8.6. It mentions H.225.0 logical signalling procedures and H.225.0 logical channels. I would assume that these should read "H.245".

Frank

paulej@PACKETIZER.COM@SMTP@MAILBAG.INTEL.COM on 26-01-2001 11:03:30 Please respond to paulej@PACKETIZER.COM@SMTP Sent by: ITU-SG16@MAILBAG.INTEL.COM To: ITU-SG16@MAILBAG.INTEL.COM@SMTP cc: Subject: Re: The meaning of "mode" in the H.323 Recommendation? Classification:

Frank,

I would need to look at the particular section of text or sections :-), but I if it isn't clear, I'd agree that it should be clarified. Unfortunately, it's too late to get such text into H.323 version 4.

If it is a short list of sections, post them here and I suspect folks will be able to get an answer to you before I get back into the office (I'm currently on the road). If the list is lengthy, just send it to me and I'll look at the sections when I get a chance. Do you think this is something that needs clarification in the implementers guide or something to try to get into v5?

Paul

----- Original Message ----- From: "Frank Derks" frank.derks@PHILIPS.COM To: ITU-SG16@mailbag.cps.intel.com Sent: Tuesday, January 23, 2001 7:33 AM Subject: The meaning of "mode" in the H.323 Recommendation?

...

Paul,

as I was reading through the latest draft of H.323v4, I came across

something that has

...

been in the recommendation for a long time, but that I never quite

grasped: "mode".

...

The recommendation talks about "mode" and there is a (H.245) message to

request

...

a terminal to use a certain "mode" (requestMode), but there is no

explanation of what

...

"mode" actually means. Shouldn't there be a definition of "mode" in the

Definitions

...

section?

Regards,

Frank

---

Frank Derks |Tel +31 35 6893238 | Advanced Development |Fax +31 35 6891030 | Philips Business Communications|P.O. Box 32 | |1200 JD Hilversum | |The Netherlands | ----------------------------------------------------| E-mail: mailto:frank.derks@philips.com | WWW: http://www.sopho.philips.com |

---

For help on this mail list, send "HELP ITU-SG16" in a message to
listserv@mailbag.intel.com

For help on this mail list, send "HELP ITU-SG16" in a message to
listserv@mailbag.intel.com

For help on this mail list, send "HELP ITU-SG16" in a message to listserv@mailbag.intel.com

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ For help on this mail list, send "HELP ITU-SG16" in a message to listserv@mailbag.intel.com