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Multimedia mail meeting notes (RFC0807) Disclosure Number: IPCOM000003856D
Original Publication Date: 1982-Feb-01
Included in the Prior Art Database: 2019-Feb-14
Document File: 6 page(s) / 8K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

J. Postel: AUTHOR

Related Documents

10.17487/RFC0807: DOI


This RFC consists of notes from a meeting held at USC Information Sciences Institute on the 12th of January to discuss common interests in multimedia computer mail issues and to agree on some specific initial experiments.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 32% of the total text.

Network Working Group J. Postel Request for Comments: 807 ISI 9 February 1982

Multimedia Mail Meeting Notes


A meeting was held at USC Information Sciences Institute on the 12th of January 1982 to discuss multimedia mail issues and experiments. The list of attendees is at the end of this memo.


This meeting was called to discuss common interests in multi-media computer mail experiments, and to agree on some specific initial experiments.

Review of Status:

Review current status of multimedia efforts at CMU, ISI, MIT, COMSAT, BBN, UCL, SRI.


Using PERQ, Quip for fax, LPCM vocoder from LL, will get NEC board (3 chips) to replace vocoder. Will have a stand alone voice I/O device that operates at 2400 baud (not packetized). Not working on IP/TCP. Will use the IP and TCP from the BBN project. Already using the BBN Jericho developed Pascal IP and CFTP. Interested in word recognition of LPC digitized voice data. Planning to package a synthesiser, an analyzer, and a pitch tracker on one board.


Using TOPS20 (code in BLISS10), and starting to use PERQ (code in Pascal), RAPICOM 450 for fax. Main interest is in the data structuring and message transport protocols.


Using Apollos, will program in MDL. Use of Apollos still limited due to (1) MDL not completely implemented, (2) network interface not yet available (waiting on multibus to then interface to Ethernet). Will get NEC CCITT fax machine. Looking into VAX+BBN BitGraph for future. Main work to date in design for sharing message data in a conceptualy centralized filing system. Emphasis

Postel [Page 1]

Multi-Media Mail Meeting Notes 9 February 1982

on efficient storage and manipulation of multirecipient messages, enclosures, citations, etc.


Using small 11s, Rapicom 450 and 500 fax machines, also have some LPC vocoders. Substantial work has been done on encoding and decoding both Rapicom 450 and CCITT T.4 fax data, and also on manipulation of bitmap data (See RFC 803).


Using Jericho (code in Pascal). Will be building a prototype system with the aim of investigating problems of data distribution and privacy. Trying to produce portable software currently in Pascal but may switch to ADA in the distant future. Have IP and CFTP running, working on TCP. CFTP is a file transfer built directly on IP.


Using LSI-11, Rapicom 450 fax machine, Grinell bitmap display. May get PERQs (produced by ICL) in future. Have done quite a lot of work on encoding/decoding for the Rapicom 450, and in bitmap manipulations (e.g., cleanup of noise, scaling, cut and paste). Interests in the relation of other types of display protocols to multimedia effort e.g., VIDEOTEXT and TELETEXT.


There are three multimedia mail projects at SRI,sponsored by DCEC, ARPA, and NAVELEX. SRI is a subcontractor (with Sytek and DTI) to SDC in the DCEC program to produce protocol specifications for the DoD. SRI has written service specifications for a mail system similar to RFC759+767 with security features...