1
Scope
2 Normative references
3 Definitions
4 Abbreviations
5 Introduction
6 Communication between gateways
6.1 Internet protocol – TCP or UDP
6.2 Gateway facsimile data transfer functions
7 IFT protocol definition and procedures
7.1 General
7.2 IFP packet format
7.3 TYPE definitions
7.4 The IFP DATA element
8 IFP message flow for facsimile modulations up to V.17
8.1 Data rate management method 1
8.2 Data rate management method 2
9 IFT over UDP transport
9.1 IFT over UDP transport using UDPTL protocol: IFT/UDPTL/UDP
9.2 IFT over UDP transport using RTP protocol: IFT/RTP/UDP
10 Message flow for
V.8 signals and Annex F/V.34 facsimile
10.1 V.8 negotiation
10.2 V.34 data rate management
10.3 Facsimile mode
10.4 Compatibility with equipment conforming to prior versions of this
Recommendation
Annex A – ASN.1 notation
A.1 T.38 (2002) ASN.1 notation
A.2 T.38 (1998) ASN.1 notation
Annex B – H.323 call establishment procedures
B.1 Introduction
B.2 Communication between facsimile terminal and gateway
B.3 Communication between gateways
Annex C – The optional forward error correction scheme
for UDPTL
C.1 Overview of the optional forward error correction mechanism
C.2 Parity encode/decode scheme operation and characteristics
Annex D – SIP/SDP call establishment procedures
D.1 Introduction
D.2 Communication between gateways
Annex E – H.248.1 call establishment procedures
E.1 Introduction
E.2 Communication between gateways
Annex F – Interworking procedures: T.38 and V.150.1 in
the same gateway
F.1 Introduction
F.2 SSE reason identifier codes for T.38 transition
F.3 External signalling
Annex G – H.245 Capability Definition for T.38 over
RTP
Appendix I – Session examples
I.1 Session
examples
I.2 IAF device
Appendix II
– Examples of call establishment
procedures described in Annex B/T.38
II.1 Sequence examples of call
establishment procedures
II.2 Protocol data used in call establishment procedures
Appendix III – H.248 call establishment procedure
examples for facsimile-capable media gateways
III.1 Introduction
III.2 Examples of call setup
Appendix IV – V.34
session examples
IV.1 V.34 session examples
Appendix V – T.38
Implementation Guidelines
V.1 General issue
V.2 IAF issue
V.3 Call-setup issue