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INTERNATIONAL TELECOMMUNICATION UNION
ITU-T RECOMMENDATION SUMMARY
Rec. No. : X.39
Title : Procedures for the exchange of control information and user
data between a facsimile packet assembly/disassembly (FPAD)
facility and a packet mode data terminal equipment (DTE) or
another FPAD
Study Group : VII - Data Communications Network
Version : New
Date of adoption : 1992
Notes :
The establishment in various countries of public data networks
providing packet-switched data transmission services creates a need to
produce standards to facilitate international interworking.
Recommendation X.39 defines:
a) the procedures for the exchange of FPAD control
information and user data;
b) the manner in which user data is tranderred;
c) the procedure for the control of the FPAD via FPAD
messages;
d) the formats of data fields which are transferable on a
virtual call.
The Recommendation X.39 procedures shall apply to the
Recommendation X.25 interface between the DCE and the packet mode DTE.
To order the complete text of this Recommendation, please use the
Order Form for ITU-T Recommendations. An electronic version of this
form is available on ITUDOC (Winword 2.0: UPI=ITU-5265; ASCII: UPI=ITU-2488).