Mobile Switching Centre-SDX MSC-II

7/23/2019 Mobile Switching Centre-SDX MSC-II

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SDX-MSC IISDX-MSC IIHardware Architecture

By

Syed Muhammad Munavvar

Hussain


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MSC Specifications

Capacity

Telephony Specifications


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Hardware Architecture

The SDX-MSC II consists of followingsubsystems:

Access Switching Subsystem (ASS)Centralized Control Subsystem (CCS)

Interconnection Network Subsystem (INS)

Location Registration Subsystem (LRS)


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Access Switching Subsystem(ASS)


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Access Switching Subsystem(ASS)

The ASS consists of following functionblocks:Digital Trunk Interface (DTI)

Time Switch & Link (TSL)Digital Service Circuit (DSC)

Signaling system No.7 protocol Handler (S7H)

Mobile Voice Quality Test (MVQT)

Access Switching Processor/Access SwitchPeripheralProcessor (ASP/ASPP)


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DTI & TSL Cards

The DTI block consists of:

Digital Trunk Back Panel Assembly (DTBPA)

CEPT Digital Trunk Interface board Assembly (CDTIA)

The TSL block consists of:

Time Switch Back Panel Assembly (TSBPA)

Sub-highway Multiplex & De-multiplex Assembly(SMDXA)

Time Switch Control & Maintenance Assembly (TSCMA)

Local optic Transceiver Interface Assembly (LTRIA)

Optic Transceiver Module Assembly (OTRMA)


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DSC & S7H Cards

The DSC block consists of: Digital Service circuit Back Panel Assembly (DSBPA) Digital Service circuit for Voice Message Assembly

(DSVMA)

Digital Service circuit for Call Mixer Assembly (DSCMA) Digital Service circuit for Multi-frequency Signaling

Assembly (DSMSA)

S7H Block consists of: The S7H block consists of: SS7 Protocol Handler Back Panel Assembly (SPBPA) Signaling System No.7 Handler Assembly (SSPHA)


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MVQT & ASSP Cards

The MVQT block consists of: Digital Service circuit Back Panel (DSBPA) Mobile Voice Quality Test Assembly (MVQTA)

ASS Processor block consists of: Main Processor Back Panel Assembly (MPBPA) Main Processor Duplication Manager Assembly

(MPDMA)

Telephony Device Control Master Assembly (TDCMA)


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Interconnection Network Subsystem

(INS)


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Interconnection Network Subsystem

(INS)

The INS consists of:Space Switch & Link (SSL)

Communication Inter-working Network (CIN)

Network Synchronization (NES)

Interconnection Network Processor (INP)

Inter Network Peripheral Processor (INPP)


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SSL & CIN Cards

The SSL block consists of: Space Switch Back Panel Assembly (SSBPA) Central Optic Transfer & Receiver Interface Assembly

(CTRIA)

Clock Distribution & Processor Interface Assembly(CDPIA) Space Switch Matrix Assembly (SSMXA) Optic Transceiver Module Assembly (OTRMA)

The CIN block consists of: CI Back Panel Assembly (CIBPA) CI Node Interface Assembly (CINIA) CI Node Maintenance Assembly (CINMA)


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NES & INP Cards

NES block consists of:

Network Synchronization Back Panel Assembly (NSBPA)

Network Synchronization Clock Generation Assembly(NSCGA)

Network Synchronization Clock Maintenance Assembly(NSCMA)

INP consists of:

Main Processor Back Panel Assembly (MPBPA) Main Processor Duplication Manager Assembly

(MPDMA)


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Centralized Control Subsystem(CCS)


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Centralized Control Subsystem(CCS)

The CCS consists of the followingblocks :

Alarm Panel Control (APC)Operation & Maintenance Processor

(OMP)

Central Control Peripheral Processor(CCPP)


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APC & OMP Cards

APC Block consists of:

Remote Control Back Panel Assembly (RCBPA)

Alarm Panel Control Interface Assembly (APCIA)

OMP consists of:

Operation & Maintenance processor Back Panel(OMBPA)

Main Processor SCSI-bus Interface (MSBIA) Main Processor Duplication Manager (MPDMA)


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CCPP Cards

CCPP consists of following boards:

Telephony Device Control Master Back Panel(TMBPA)

Telephony Device Control Master (TDCMA)


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Location Registration Subsystem(LRS)


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Location Registration Subsystem(LRS)

performs the VLR functions

&

consists of following function block:Location Register Processor (LRP)


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LRP Cards

LRP block consists of following:

Main Processor Back Panel (MPBPA)

Main Processor Duplication Manager(MPDMA)


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Processor Structure

The SDX-MSC II Processors are

classified as follows depending uponthe functions :

Main Processor (MP)

Peripheral Processor (PP)


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Thank You..!

Mobile Switching Centre-SDX MSC-II

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