0AX001103 SoftX3000 Signaling and Protocol Processing ISSUE2.0

ISSUEISSUE

Fixed Network Curriculum

Development Section

Fixed Network Curriculum

Development Section

OAX001103 Signaling and Protocol Processing

OAX001103 Signaling and Protocol Processing

2.02.0

Confidential Information of Huawei. No Spreading without Permission.

Security Level: Internal

2

ReferencesReferences

U-SYS SoftX3000 Architecture & Principle(V3.06)



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ObjectivesObjectives

Understand the signaling processing

path

Upon completion of this course, you will be able to:



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Course ContentsCourse Contents

Chapter 1 Processing Path for Signaling over IP

Chapter 2 Processing Path for Signaling over TDM



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Protocol stack of FCCU/FCSU/BSGI/MSGIProtocol stack of FCCU/FCSU/BSGI/MSGI

SCCP

ISUP

MSGI

FCCU

TCAP

M2UA

M3UA

SCTP UDP TCP

INAP MGCP H.248 H.323SIP

IUA

DSS1

IP

MTP3

MTP2

MTP1 UDP

IP

FCSU

BSGI

EPII V5UA

V5.2

H.323 RAS H.323 CALLMGCPStack

H.248Stack

IUA

V5UA

M3UA

R2

SIP Stack



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Signaling over IPSignaling over IP

ISUP/INAP over MTP3/M2UA

ISUP/INAP over M3UA

DSS1 over IUA

V5.2 over V5UA

MGCP/H.248 over UDP

H.323 over IP

SIP over UDP



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Signaling Processing Path for ISUP/INAP/DSS1/V5.2

Signaling Processing Path for ISUP/INAP/DSS1/V5.2

SMUI

SIUI

HSCI

BFII

SIUI

BFII

IFMI

SMUI

IFMI

HSCI

Ethernet bus

Shared resource bus

Core LAN Switch Core LAN Switch

FE FE

Frame A

BSGI

BSGI

FCCU

FCCU

FEFE



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Signaling Processing for ISUP/INAP/DSS1/V5.2

Signaling Processing for ISUP/INAP/DSS1/V5.2

1. The BFII provides an IP interface to receive IP packets, processes physical-layer

messages, and transfers the packets to an IFMI through a fixed connection.

2. The IFMI processes the MAC messages, and subsequently dispatches them to a

designated BSGI through the Ethernet bus for further processing. That is level-1

message dispatch, also called bearer signaling message dispatch.

3. The BSGI processes IP, UDP, SCTP, M2UA, M3UA and V5UA messages, then

sends the messages to FCCU/FCSU through Ethernet bus. That is level-2

message dispatch.

4. FCCU/FCSU processes the service messages.



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Signaling Processing for MGCP/H248-UPSignaling Processing for MGCP/H248-UP

SMUI

SIUI

HSCI

BFII

SIUI

BFII

IFMI

SMUI

IFMI

HSCI

Ethernet bus

Shared resource bus


FE FE

Frame A

BSGI

FCCU

FCCU

BSGI

FEFE

CDBI

CDBI



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Signaling Processing for MGCP/H248_DOWNSignaling Processing for MGCP/H248_DOWN

S

M

U

I

S

I

U

I

H

S

C

I

B

FI

I

S

I

U

I

B

F

I

I

I

F

M

I

S

M

U

I

I

F

M

I

H

S

C

I

Ethernet bus

Shared resource bus


FE FE

Frame A

B

S

G

I

B

S

G

I

F

C

C

U

F

C

C

U

IPIP



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Signaling Processing for MGCP/H248Signaling Processing for MGCP/H248

1. The BFII provides an external IP interface to receive IP packets communicated

with media gateways, processes physical-layer messages, and transfers the

packets to an IFMI through a fixed connection.

2. The IFMI processes MAC messages, and subsequently dispatches them to a

BSGI through the Ethernet bus according to BSGI function configuration and

load-sharing principle.

3. The BSGI processes MGCP/H.248 lower-layer protocol messages, and

subsequently dispatches them to a CDBI capable of dispatching MGCP/H.248

messages.

4. CDBI queries the correspondence table between media gateway domain name

and pertaining FCCU/FCSU module number, and subsequently transfers

messages to the FCCU/FCSU module responsible for managing the gateway or

termination.

5. The FCCU/FCSU processes the MGCP/H.248 messages.



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Signaling Processing Path for H.323/SIPSignaling Processing Path for H.323/SIP



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1. The BFII provides an IP interface to receive IP packets, processes

physical-layer messages, and transfers the packets to an IFMI

through a fixed connection.

2. The IFMI processes the MAC messages, and subsequently

dispatches them to a designated MSGI through the Ethernet bus

for further processing. That is level-1 message dispatch, also

called bearer signaling message dispatch.

3. The MSGI processes IP, UDP, TCP, H.323 RAS, H.323 CALL and

SIP messages, then sends the messages to FCCU/FCSU through

Ethernet bus. That is level-2 message dispatch.

4. FCCU/FCSU processes the service messages.

Signaling Processing for H.323/SIPSignaling Processing for H.323/SIP



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Course ContentsCourse Contents

Chapter 1 Processing Path for Signaling over IP

Chapter 2 Processing Path for Signaling over TDM



15

Protocol stack of FCCU/FCSU/BSGI/MSGIProtocol stack of FCCU/FCSU/BSGI/MSGI

SCCP

ISUP

MSGI

FCCU

TCAP

M2UA

M3UA

SCTP UDP TCP

INAP MGCP H.248 H.323SIP

IUA

DSS1

IP

MTP3

MTP2

MTP1 UDP

IP

FCSU

BSGI

EPII V5UA

V5.2

H.323 RAS H.323 CALLMGCPStack

H.248Stack

IUA

V5UA

M3UA

R2

SIP Stack



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Normal processing path for signaling over TDMNormal processing path for signaling over TDM



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Normal processing for signaling over TDMNormal processing for signaling over TDM

1. The E1 interface of an EPII provides a TDM PCM interface to

access standard 64-kbit/s or 2-Mbit/s SS7 signaling links. T

he EPII processes MTP1 messages, extracts signaling time

slots, and transmits them to the FCSU through internal HWs.

2. The FCSU processes both MTP2 and MTP3 messages, then

transfers the user layer messages to a designated FCCU/FC

SU for further processing.

3. FCCU/FCSU processes the user layer messages.



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Standby processing path for signaling over TDMStandby processing path for signaling over TDM



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0AX001103 SoftX3000 Signaling and Protocol Processing ISSUE2.0

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