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RFC 4666, "Signaling System 7 (SS7) Message Transfer Part 3 (MTP3) - User Adaptation Layer (M3UA)", September 2006

Source of RFC: sigtran (rai)

Errata ID: 2518
Status: Rejected
Type: Technical
Publication Format(s) : TEXT

Reported By: Suyash Karmarkar
Date Reported: 2010-09-14
Rejected by: Robert Sparks
Date Rejected: 2010-09-14

Section 3.2. says:

3.2. Variable-Length Parameter Format

M3UA-Specific parameters. These TLV parameters are specific to the
M3UA protocol:

Registration Result                               0x0208
Deregistration Result                             0x0209
Local Routing Key Identifier                      0x020a

It should say:

3.2. Variable-Length Parameter Format

Common Parameters. These TLV parameters are common across the
different adaptation layers:

Registration Result                 0x0014,
Deregistration Result               0x0015,
Local Routing Key Identifier        0x0018,


As the above three parameters mentioned are used for the same purpose in RFC 3868 and in RFC 4666. So the above parameters in RFC 4666 Section 3.2, the M3UA-Specific parameters can be considered to move them into the common parameters section 3.2 of RFC 4666 with the above sepecified values.

The advantage could be, for one who implements both SUA & M3UA can use the same encoding and decoding mechanisms/code for both the implementations.
Per discussion on the SIGTRAN list, this is a fundamental and non-interoperable change to the protocol.

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