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6 Message Reference
• seconds_fraction
Binary fractions of a second.
6.4.4 API_MSG_TX_REQ – MTP2 Transmission Request
Synopsis
Message issued to the board by MTP3, containing an SS7 Message Signal Unit (MSU) for transmission on the
specified link.
Format
Description
Message issued to the board by MTP3 containing an SS7 Message Signal Unit (MSU) for transmission on the
specified link.
Parameters
The API_MSG_TX_REQ message includes the following parameters:
• Signaling Unit Data
The Signaling Unit data in binary format, excluding the Flags and Checksum, commencing with the SIO.
MESSAGE HEADER
FIELD NAME MEANING
type API_MSG_TX_REQ (0xcf00)
id l2_llid
src Sending module ID
dst MTP2 module ID
rsp_req Sending layers bit set if response is required.
hclass 0
status 0
err_info 0
len Number of octets in the Signaling Unit.
PARAMETER AREA
OFFSET SIZE NAME
0 len Signaling Unit (SU) data in binary format commencing with the SIO.