Dear Mr. OKUBO Sakae and all: I appreciate that Mr. OKUBO Sakae have given us the comments to draft F.dl and F.avod. I modified the draft F.dl and F.avod based on his comments. Attached is the new version of draft F.dl. The reply to Mr. OKUBO Sakaea's comments is as follows: You comments to the reversion of F.dl and comments to the reply are solicited. I will send the new version of Draft F.avod soon. Thank all of you for your comments in advance. Best Regard. Nie xiuying F.DL ^^^^ 1/ Table of Contents Why ex Section 8 Requirements has been dropped in this draft? It should be an essential part as shown in the title and scope. Add Ex Section 8 requirments to new document, delete 8.2 and 8.3 of last version. In my opinion, 8.2 and 8.3 have similar means to ex section 8. 2/ Section 1 I cannot understand the meaning of "responsive application solution" and the intention of including the "when applicable ITU-T Recommendations are not yet available" part. The latter looks contradictory if this documents is intended as an ITU-T Recommendation. I derived this setence from ITU- T REc. F.701. I think it refers to special application requirments and technical architecture and framwork. I delete the sentence from the new version document if it does not define anything. 3/ Section 2 We need to check if we can include IEEE standards as part of the normative references. I have checkITU-T releted document about it. the answer to it is "yes". 4/ Section 3, Distance Learning I do not understand what "sometimes connectedness" means. It means "through telecommunication networks"., because using post ( or mail) to send learning material is also a kind of "distance learning". 5/ Section 6, last paragraph The same comment as 1/. 6/ Section 7.1.1, Case 2, Stage 1 It is implied that DLSP provides instant messaging. Videophone and telephone look separate from DLSP. Is that the intention? It only refers to that individual instruct can also be achieved using videophone or telephone. It may or may not within DLSP. For this draft scope, I delete them from this document to limite distance learning to multimedia services. 7/ Section 7.3, 1st paragraph I would suggest to itemize listed applications as bullets. I modify the document based on this suggestion. 8/ Section 7.3, 2nd paragraph "conferences" and "files distribution applications" look too generic for this document addressing distance learning service. I delete them. 9/ Section 8.2 I would suggest to itemize listed applications under the sentence: The following are desirable adjuncts to the distance learning application: I delte this section, because I add ex section 8 requirments to this document. F.avod ^^^^^^ 1/ Section 5, 2nd paragraph I wonder if the scope of this document is limited to the use of "current carriers networks." I believe it should also take into account other type of networks like corporate, private ones. Chang it to telecommunications networks to include other networks. 2/ Section 6.1, 2nd paragraph This description doe not match Figure 1. "Control and management system" is a part of the "service provider" there. Change the description to " .. is made of content providers, service providers and end users " 3/ Section 6.1, after Figure 1, 2nd bullet, 2nd sentence It is hard to capture the structure of this sentence. Please rephrase it. 4/ Section 6.1 "value-added services" is too generic. We need some examples in the context of avod. Give some examples . such as audivisual on demand service prsented, gaming, per-order audiovisual on demand services. 5/ Section 7.1, 1st paragraph, 3rd sentence I cannot understand what "integrating centralized or distributed methods" means. Delete them form document. It refers to CDN based method and peer to peer delivery method. 6/ Section 7.2, 1st paragraph, 4th sentence starting with "Some current affairs, ..." This sentence is incomplete. delete this sentence. 7/ Section 7.3, Stage 5, 2nd last sentence It is not clear to me how "due to he has passed the authentication before" related to other part of the sentence. delete " after he passes authentication". 8/ Section 8.3, 3rd sentence This sentence is incomplete. change "." to ","to make two sentences into one sentence. 9/ Section 8.6, after the three bullets What is "start time"? Response time to the request of an audiovisual content? yes, it is. 10/ Section 9, 2) Add some more descriptions, "control" is necessary in any type of avod applications as far as "on demand" is involved. Change " control" to " monitoring". 11/ Section 11.2, 1st sentence It looks we are comparing the two different categories; provider (SP stands for Service Provider) and system (videoconference system). It is not a surprise if they are quite different in functions.　 Delete the first paragraph.　 _____ ========= _____