MK5027(2003) 查看數據表（PDF） - STMicroelectronics

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MK5027
(Rev.:2003)

SS7 SIGNALLING LINK CONTROLLER

STMicroelectronics 

SIGNALLING UNIT REPERTOIRE

The signal unit repertoire of the MK5027 is shown

in Table 1. This set conforms to the 1988 CCITT

specification for level 2 of Signalling System #7.

The definitions for the symbols for the frame

types are:

Table 1: MK5027 Signal Unit Repertoire.

MK5027

Name

F

FSN

BSN

FIB

BIB

LI

X

SIO

SIF

SF

FCS

Definition

Flag Sequence

Forward Sequence Number

Backward Sequences Number

Forward Indicator Bit

Backward Indicator Bit

Lenght Indicator

Programmed As Zeroes

Signalling Information Octet

Service Information Field

Satus Field

Frame Check Sequence

9/19

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