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bits:
4.7.3.10.4.4.2 The coding of the cleating cause which
a) bit 1: facilities field present; and may be generated by the SSNDPX shall be as given in
Table 4-16.
b) bit 2: NSAP address present.
4.7.3.10.3.2.2 These bits shall be set to 1 if the cor- 4.7-3-10.4.5 Diagnostic 'Odefield
responding fields are present; otherwise, they shall be set to 0.
The octet following the clearing cause field shall be the
4.7.3.10.3.3 Called-NSAP address peld diagnostic code field. It shall contain additional information on
the reason for the release of the connection. The coding of the
diagnostic code field shall be dependent on the clearing cause
When indicated by the NSAP address present indicator bit, the
octets following the logical channel number field shall consist a in Table 4-16- The diagmslic code field sodings when
of the called-NSAP address.
connection release has been initiated by the SSNDPX shall be
as defined in Table 4- 17.
4.7.3.1 0.3.4 Facility length field
4.7.3.10.4.6 Clear user data field
When indicated by the facilities fie'ld present indicator bit, the
next octet shall contain the length of the facilities field in Thc field following the diagnostic code field shall be the user
octets. The facility length indicator shall be binary-coded, data field. If present, this field shall contain not more than 128
where bit 1 shall be the low-order bit of the field. octets of user data
2/11/00
No. 75
Annex 10 - Aemnuuticul Telecommunicutibns Volume 111
4.7.3.10.5 CONNECTION RELEASE 4.7.3.10.9.3 Diagnostic code
COMPLETE SNPD u
4.7.3.10.9.3.1 Octet 4 shall be the diagnostic code field
Thc connection release complete SNPDU format shall be as and shall contain additional information on the reason for the
defined in Figure 4- 17. reset. The coding of the diagnostic code field shall be
dependent on the resetting cause as given in Table 4-16. The
diagnostic code field codings when the reset has been initiated
4.7.3.10.6 DATA SNPDU by the SSNDPX shall be as defmed in Table 4-17.
4.7.3.10.6.1 The data SNPDU format shall be as defmed 4.7.3.10.9.3.2 If the resetting cause field indicates "IWF
in Figure 4-1 8. originated", the diagnostic code field shall have been passed
unchanged from the IWF as a result of its having initiated a
4.7.3.10.6.2 M-bit resetting procedure.
The M-bit shall be set to 1 if the SNPDU is not the last in an
M-bit sequence of data SNPDUs; otherwise, it shall be set 4.7.3.10.10 RESET CONFIRM SNPDu
4.7.3.10.6.3 SNPDU numberJield
Octet 3 shall contain the 8-bit SNPDU number.
The reset confirm SNPDU format shall be as defined in
Figure 4-22.
4.7.3.10.11 FLOW CONTROL (SUSPEND) SNPDU
4.7.3.10.6.4 User data field 4.7.3.10.1 1.1 The flow control (suspend) SNPDU format
shall be as defined in Figure 4-23.
The iield following the SNPDU number field shall contain
the user data. This field shall contain up to a maximum of 4.7.3.10.11.2 fllo,,, reasonfield
503 octets.
Octet 3 shall contain the flow control reason field. This field
shall be set to 1 1001001 (suspend).
4.7.3.10.7 INTERRUPT DATA SNmU
4.7.3.10.1 1.3 SNPDU numberfield
4.7.3.1.0.7.1 The interrupt data SNPDU format shall be as
defined in Hgure 4- 19. Octet 4 shall contain the 8-bit SNPDU number of the last
in-sequence received and accepted data SNPDU.
4.7.3.10.7.2 Interrupt user data field
The field following the logical channel number field shall be 4.7.3.10.12 c a(RESU~ME) SW~DU
the interrupt user data field. This field shall contain up to a
maximum of 32 octets. 4.7.3.10.12.1 The flow control (resume) SNPDU format
shall be as defined in Figure 4-24.
4.7.3.10.8 INTERRUPT CONFIRM S w D u 4.7.3.10.12.2 How conttwl Jield
'Ihe SNPDU be as defined in Octet 3 shall contain the flow control reason field. This field
Figure 4-20. shall be set to 1100101 1 (resume) to resume transmission from
the peer.
4.7.3.10.9 RESET SNPDU
4.7.3.10.9.1 The reset SNPDU format shall be as defined
in Figure 4-21.
4.7.3.10.9.2 Resetting cause
Octet 3 shall be the resetting cause field and shall contain the
reason for the reset. When the reset has been initiated by the
SSNDPX, the coding of the resetting cause field in a reset
SNPDU shall be as given in Table 4-16.
4.7.3.10.13 CONNECTIORNEQ UEST/CONFIRM
SNPDU FACIU'rIES FlELD
4.7.3.10.13.1 The facilities field shall be present only
when the facility field present indicator bit is set to one in the
connection request, and connection confirm SNPDUs.
4.7.3.10.13.2 The facilities field shall contain one facility
element for each facility or group of facilities requested. The
first ockt of each facility element shall be the facility code
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