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GSM SIM Server GSM SIM Server Low Level Protocol Scheme AddPac Technology www.addpac.com 2013, Sales and Marketing

Low Level Protocol Scheme Overview for Remote SIM … SIM and Remote SIM FlowLocal SIM and Remote SIM Flow AddPac GSM VoIP Gateway AddPac GSM SIM Server GSM Mdl Local Remote GSM VoIP

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Page 1: Low Level Protocol Scheme Overview for Remote SIM … SIM and Remote SIM FlowLocal SIM and Remote SIM Flow AddPac GSM VoIP Gateway AddPac GSM SIM Server GSM Mdl Local Remote GSM VoIP

GSM SIM ServerGSM SIM Server Low Level Protocol Scheme

AddPac Technology

www.addpac.com

2013, Sales and Marketing

Page 2: Low Level Protocol Scheme Overview for Remote SIM … SIM and Remote SIM FlowLocal SIM and Remote SIM Flow AddPac GSM VoIP Gateway AddPac GSM SIM Server GSM Mdl Local Remote GSM VoIP

ContentsContents

• General GSM SIM Server Service Diagram• Dynamic IP Address Environment (example)

GSM V IP G H d A hi ( l )• GSM VoIP Gateway Hardware Architecture(example)• GSM SIM Server Hardware Architecture(example)

L l SIM d R t SIM Fl• Local SIM and Remote SIM Flow• Remote SIM Initialize Scheme• AddPac Remote SIM Data Link Protocol• AddPac Remote SIM Data Link Protocol

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Page 3: Low Level Protocol Scheme Overview for Remote SIM … SIM and Remote SIM FlowLocal SIM and Remote SIM Flow AddPac GSM VoIP Gateway AddPac GSM SIM Server GSM Mdl Local Remote GSM VoIP

General GSM SIM Server Service DiagramGeneral GSM SIM Server Service Diagram

GK

EMS

Media Gateway

Gate Keeper

MGNew York Moskva

MGMGMG

PSTN IP Network(WAN)

BS

Elementary ManagementSystem

Billing Server

PSTNSIP Proxy Server

Billing Server

LAN

LANAP-GSS5000GSM SIM Server

Remote SIM

GSMNetwork

GSMNetwork

AddPac GSM Gateways for SIM Client

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GSM TerminalGSM Terminal

Page 4: Low Level Protocol Scheme Overview for Remote SIM … SIM and Remote SIM FlowLocal SIM and Remote SIM Flow AddPac GSM VoIP Gateway AddPac GSM SIM Server GSM Mdl Local Remote GSM VoIP

Dynamic IP Address Environment y

Dynamic DNS

DNS Update

DNS Query(gethostbyname)

InternetSIM Client

(Ex : AP-GS916) 3G/WiMaxData Modem(PPP or DHCP)

p

3G/4GData

GSM SIM Server(E AP GSS5000)3G/WiMax Data ModemSIM Client

xDSL Modem(PPP or DHCP)

Data

(Ex : AP-GSS5000)(PPP or DHCP)

DNS Connection

SIM Client(Ex : AP-GS916)

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DNS Connection

SIM Data Connection

Page 5: Low Level Protocol Scheme Overview for Remote SIM … SIM and Remote SIM FlowLocal SIM and Remote SIM Flow AddPac GSM VoIP Gateway AddPac GSM SIM Server GSM Mdl Local Remote GSM VoIP

GSM VoIP Gateway H/W Architecture

AP-GS916 16-Port GSM VoIP Gateway

(Ex : AP-GS916) AP GS916 16 Port GSM VoIP Gateway

Internal H/W Block Diagram

GSMModuleAntenna DSP

0

UARTAntenna

Antenna

GSMModuleGSM

Module DSP

DSP

MemoryGSM

Network

Call Manager

RISC

AntennaGSM

Module

DSP Memory

InternetRJ45MACAntenna

Antenna

GSMModuleGSM

M d l

DSPLAN

GSM Phones

Antenna

Antenna

Antenna

ModuleGSM

ModuleGSM

M d l

UART

DSP15

www.addpac.com 5IP Phone

IP Phone to GSM Phone

Antenna Module

Page 6: Low Level Protocol Scheme Overview for Remote SIM … SIM and Remote SIM FlowLocal SIM and Remote SIM Flow AddPac GSM VoIP Gateway AddPac GSM SIM Server GSM Mdl Local Remote GSM VoIP

GSM SIM Server H/W Architecture

GSM SIM Server

(Ex : AP-GSS3000)

64ch x 16 Slot = 1024ch Service Diagram

AP-GSC640

FPGA Memory GSM VoIP Gateway

RISCCPU64ch SIM Card Module

Remote SIM Call Manager

RJ45MACAP-GSC64

Internet

15FPGA

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Page 7: Low Level Protocol Scheme Overview for Remote SIM … SIM and Remote SIM FlowLocal SIM and Remote SIM Flow AddPac GSM VoIP Gateway AddPac GSM SIM Server GSM Mdl Local Remote GSM VoIP

Local SIM and Remote SIM FlowLocal SIM and Remote SIM Flow

AddPac GSM VoIP Gateway AddPac GSM SIM Server

GSMM d l

Local Remote

AddPac GSM VoIP Gateway (SIM Client)

AddPac GSM SIM Server

Module

DSP

SIM

GSMAP-GSC32

Remote SIMSIM

RemoteSIM

UART

S

M

Module

SIM

GSMFPGA

0

RISC

DSPMemoryModule

SIM

GSM RISC

Memory

SIM Card Module

RJ45MAC

LAN

GSMModule

SIMInternet RJ45

MAC

LAN

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Page 8: Low Level Protocol Scheme Overview for Remote SIM … SIM and Remote SIM FlowLocal SIM and Remote SIM Flow AddPac GSM VoIP Gateway AddPac GSM SIM Server GSM Mdl Local Remote GSM VoIP

R t SIM I iti li S hRemote SIM Initialize Scheme

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Page 9: Low Level Protocol Scheme Overview for Remote SIM … SIM and Remote SIM FlowLocal SIM and Remote SIM Flow AddPac GSM VoIP Gateway AddPac GSM SIM Server GSM Mdl Local Remote GSM VoIP

Remote SIM Initialize (example)Remote SIM Initialize (example)

SIM data request

SIM serverSIM client (GSM VoIP Gateway)

SIM init startq

SIM data response Round trip delayAvg. 770 ~ 890 msMax. 1220 ~ 2420 ms

Message count about 446 (370 ~ 425 sec)

SIM data request

SIM data responseSIM init doneSIM init done

SIM data request (status)SIM data response

Status query (20 sec)

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Page 10: Low Level Protocol Scheme Overview for Remote SIM … SIM and Remote SIM FlowLocal SIM and Remote SIM Flow AddPac GSM VoIP Gateway AddPac GSM SIM Server GSM Mdl Local Remote GSM VoIP

SIM Service Connection

GSM SIM Client GSM SIM Server

Queue

GSMModule

Queue(SIM Data)

Queue(D t Li k)

Queue(D t Li k)

SIM Card

SIM C d

Queue(SIM Data)

Data Link Connection

GSMModule

GSMModule

(Data Link) (Data Link)

FPGA

Card

SIM Card

SIM C d

Modem(PPP or DHCP)

Modem(PPP or DHCP)

Network Connection

Module Card

SIM Card

Wireless(3G, WiMax, etc)

Ph i l C ti

GSMModule

SIM Card

e ess(3G, a , e c)Wired(xDSL)

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Physical Connection

Page 11: Low Level Protocol Scheme Overview for Remote SIM … SIM and Remote SIM FlowLocal SIM and Remote SIM Flow AddPac GSM VoIP Gateway AddPac GSM SIM Server GSM Mdl Local Remote GSM VoIP

D t Li k S hData Link Scheme

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Page 12: Low Level Protocol Scheme Overview for Remote SIM … SIM and Remote SIM FlowLocal SIM and Remote SIM Flow AddPac GSM VoIP Gateway AddPac GSM SIM Server GSM Mdl Local Remote GSM VoIP

Technical Issues

• Access Network Environment for SIM Client– 3G Data, WiMAX, etc Wireless Modem– “GSM VoIP Service + SIM Data Exchange” is occurred concurrently – Characteristic : High Delay Frequent Packet LossCharacteristic : High Delay, Frequent Packet Loss,

Frequent Packet Sequence Change, Best Effort QoS, Abrupt IP Address ChangeAbrupt IP Address Change,Unstable Power Supply

– High Performance & Reliable Data Link Protocol must be used

AddP D l d M difi d LAPD P t l i d f• AddPac Developed Modified LAPD Protocol is used for Remote SIM Data Link Protocol

• This Modified LAPD Protocol is very strong in wireless env• This Modified LAPD Protocol is very strong in wireless env. like as 3G network, WiMax.

• LAPD protocol is originally ISDN D-Channel Data Link

www.addpac.com 12Rick Graziani [email protected] 12

p g yProtocol

Page 13: Low Level Protocol Scheme Overview for Remote SIM … SIM and Remote SIM FlowLocal SIM and Remote SIM Flow AddPac GSM VoIP Gateway AddPac GSM SIM Server GSM Mdl Local Remote GSM VoIP

ISDN LAPD Protocol FrameISDN LAPD Protocol Frame

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Page 14: Low Level Protocol Scheme Overview for Remote SIM … SIM and Remote SIM FlowLocal SIM and Remote SIM Flow AddPac GSM VoIP Gateway AddPac GSM SIM Server GSM Mdl Local Remote GSM VoIP

ISDN LAPD Protocol Frame

Th LAPD fl d t l fi ld id ti l t th f HDLC

ISDN LAPD Protocol Frame

• The LAPD flag and control fields are identical to those of HDLC. • The LAPD address field is 2 bytes long. • Service access point identifier (SAPI), which identifies the portal at which

LAPD ser ices are pro ided to La er 3LAPD services are provided to Layer 3. • The command/response bit (C/R), indicates whether the frame contains a

command or a response. The second byte contains the terminal endpoint identifier (TEI)• The second byte contains the terminal endpoint identifier (TEI).– Each piece of terminal equipment on the customer premises needs a

unique identifier. The TEI may be statically assigned at installation or the switch may– The TEI may be statically assigned at installation, or the switch may dynamically assign it when the equipment is started up.

– Statically assigned TEIs range from 0 to 63. Dynamically assigned TEIs range from 64 to 126– Dynamically assigned TEIs range from 64 to 126.

– A TEI of 127, or all 1s, indicates a broadcast.

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Page 15: Low Level Protocol Scheme Overview for Remote SIM … SIM and Remote SIM FlowLocal SIM and Remote SIM Flow AddPac GSM VoIP Gateway AddPac GSM SIM Server GSM Mdl Local Remote GSM VoIP

Thank you!AddPac Technology Co., Ltd.

Sales and MarketingSales and Marketing

Phone +82.2.568.3848 (KOREA)FAX +82.2.568.3847 (KOREA)

E-mail [email protected]

www.addpac.com 15