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4 api_msg_tx_req, Api_msg_tx_req, Mtp2 transmission request – Dialogic DSI SS7MD User Manual

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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.