Dialogic DSI SPCI Network Interface Boards - Manual (Page 46)

6 Message Reference
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Bit 13 is set to 1 to cause the board to drive the CT_NETREF1 clocks on the
CT bus. The highest priority in-sync line interface is used as a clock source. If
this bit is set to zero then CT_NETREF1 clock is not driven.
All other bits are reserved and must be set to zero.
l2_flags - level 2 flags
Bit 1 is set to 1 for ANSI operation or zero for ITU-T operation.
Bit 3 is set to 1 for ANSI operation or zero for ITU-T operation.
Bit 5 is set to 1 to cause Link Status Signal Units (LSSU) to have a two octet
status field. Usually this bit is set to zero, and LSSUs have a single octet
status field.
All other bits are reserved for future use and must be set to zero.
max_sif_len - maximum Signaling Information Field length
The maximum Signaling Information Field length in octets that is permitted
over the signaling link. Usually set to 272 although it may be set to 62 for
inter-working with switches that do not support 272 octet messages.
l3_flags - level 3 flags
Bit 0 is set to 1 to disable the level 3 discrimination function (allowing the
signaling point to receive all messages irrespective of the destination point
code contained in the message) or zero to allow the discrimination function to
function normally.
Bit 1 is set to 1 to disable sub-service field (SSF) discrimination. If this bit is
set to zero, received MSUs whose ssf values do not match the configured ssf
value are discarded.
Bit 8 is set to 1 to select ANSI operation or zero for ITU-T operation.
Bit 9 is set to 1 to select ANSI style 24 bit point codes in the MTP routing
label or zero to select ITU-T style 14 bit point codes. This bit must be set to 1
if ANSI operation is selected.
Bit 10 is set to 1 for ANSI operation or zero for ITU-T operation.
Bit 11 is set to 1 for ANSI operation or zero for ITU-T operation.
All other bits are reserved for future use and must be set to zero.
Note: For ANSI operation bits 8, 9, 10, and 11 must all be set to 1.
pc - point code
The pure binary representation of this signaling point code. Must be in the
range 0 to 16383 for 14 bit point code operation, or 0 to 16777215 for 24 bit
point code operation.
ssf - sub-service field
The value used in the sub-service field of all messages generated by level 3.
Must be in the range 0 to 15. For ANSI operation, the 2 least significant bits
must be set to 1.