Ltg

 

INTRODUCTION

LTG

THE LTG FORMS THE INTERFACE BETWEEN THE DIGITAL ENVIRONMENT OF AN EWSD EXCHANGE AND THE SWITCHING NETWORK (SN).  THE LTG PERFORM NON-CENTRAL CONTROL FUNCTIONS AND THUS RELIEVE THE COORDINATION PROCESSOR (CP) OF ROUTINE WORK.  SEVERAL LTG TYPES ARE AVAILABLE FOR OPTIMAL IMPLEMENTATION OF THE VARIOUS LINE TYPES AND SIGNALING METHODS. THEY HAVE THE SAME BASIC STRUCTURE AND OPERATE ACCORDING TO THE SAME PRINCIPLES. THEY DIFFER IN FEW HW UNITS AND SPECIFIC APPLICATION PROGRAMS  IN ITS MAXIMUM CONFIGURATION, THE EWSD SWITCHING SYSTEM CAN CONNECT UP TO 504 LTGS.

20/09/09

1

DLU

LINES

LTG(B)

LTG(C)

TRUNKS

LTG

SN

CCNC

MB CP

SYP

CCG

OMT MDD 20/09/09

PRINTER

MTD 2

CONFIGURATION OPTIONS

LTG

WITH DIGITAL TRANSMISSION LINK (PRIMARY DIGITAL CARRIER, PDC) -

DLUs OPERATING AT TRANSFER RATE OF 2048 KBIT/S. V5.2 ACCESS NETWORK FOR DIGITAL TRUNKS WITH TRANSFER RATE OF 2048 KBIT/S.

WITH DIGITAL TRANSMISSION LINK FOR LOCAL OPERATION OF DLUs) AT TRANSFER RATES OF 4096 KBIT/S WITH20/09/09 PRIMARY RATE ACCESS (PA) :

3

OTHER DETAILS

LTG

OTHER DETAILS: -TRANSFER RATE ON THE SDC:LTG FROM THE LTG TO THE SN AND VICE VERSA IS 8192 KBIT/S ( 8 MBPS). -EACH OF THESE SDCS HAS 128 TIME SLOTS ,OUT OF WHICH 127 TIME-SLOTS ARE USED FOR USER INFORMATION AND ONE TIME SLOT FOR MESSAGES. -USER INFORMATION IS THE INFORMATION RELEVANT TO THE COMMUNICATION PARTNERS (VOICE, TEXT, DATA, IMAGES). -MESSAGES ARE USED COMMUNICATION IN THE EWSD SYSTEM. 20/09/09

FOR

INTERPROCESSOR 4

LTG

LTG TYPES FUN CTIO NAL LTG TYPE

LTG HW TYP E

TYP E B: -DLU -PBX (I SDN-PA) -V5.2 AC CES S NE TWORK (ON LY TO LTG M/N/P ) CA TYPNEBE C: EQU IP PED WITH OCA NE Q,COU , MDTOG -TRUN KS WITH CA S SIGN AL ING -TRUN KS WITH CC S7 SIG NAL ING - CC S7 SIGNA LING CHA NN EL

LTG G/M /N/P

TYP E D: IN TERN AT IONAL TRUN KS

LTG D

TYP E H: X25 DATA PACK ET S FRO M IS DN SUBS .

LTG H

20/09/09

LTG G/M /N/P

5

LTG FUNCTIONS

LTG

ALL PROCESSING FUNCTIONS  :

   -RECEIVING AND EVALUATING SIGNALS FROM TRUNK AND THE SUBS -SENDING SIGNALS & AUDIBLE TONES -SENDING MESSAGES TO THE CP AND RECEIVING COMMANDS FROM CP -SENDING/RECEIVING REPORTS TO/FROM THE GROUP PROCESSORS

20/09/09

6

LTG FUNCTIONS

LTG

(b) SAFEGUARDING FUNCTIONS :

-DETECTING ERRORS IN THE LTG -DETECTING ERRORS ON THE CONNECTION PATHS WITHIN THE EXCHANGE VIA CROSS-OFFICE CHECKS AND BIT ERROR RATIO COUNTING (BERC) -TRANSFERRING ERROR MESSAGES TO THE CP 20/09/09

7

LTG FUNCTIONS

LTG

( c ) ADMINISTRATIVE FUNCTIONS :

-SENDING MESSAGES TO THE CP FOR TRAFFIC MEASUREMENTS AND TRAFFIC OBSERVATION -SWITCHING OF TEST CONNECTIONS TESTING OF TRUNKS AND PORT-SPECIFIC AREAS OF THE LTG USING THE 20/09/09

8

LTG1 LIU A-side

Time slot x x x SDC x SDC

Z

LTG

n

Z

Z

SDC SDC

y y SDC y y SDC

Z

1

1

Time slot

B-side

1

1

SN0

GP

LTGn LIU

SN1

SDC SDC

n

n

n

GP MB0

MB1

IOP

IOP

P

SUBSCRIBER CONNECTION (SN0 ACTIVE) 20/09/09

9

STAN DARD DIST RIB UTIO N OF AC TIVE MESSAG E CH AN NELS OF LTGS IN SN-HAL VE S LTG No.

Act ive MCH. via

LTG No. X- 12

Act ive MCH. via SN-1

X- 1

SN-1

X- 13

SN-0

X- 2

SN-0

X- 14

SN-1

X- 3

SN-1

X- 15

SN-0

X- 4

SN-1

X- 5

SN-0

X- 6

SN-1

X- 7

SN-0

X- 8

SN-0

X- 60

SN-1

X- 9

SN-1

X- 61

SN-0

X- 10

SN-0

X- 62

SN-1

X- 11

SN-1

X- 63

SN-0

20/09/09

LTG

10

LTG1 LIU

Time slot

SN1

0 0 0 0

              1

                1

GP

x 1

LTG

SN0 x x

y

1

y

x

y

126

2*

2*

126

y

Time slot LTG63 LIU

0 0 0 0

2

2

126*

63

63

             63

126*

63

GP

- Message channel LTG-SN/SN-LTG through

MB0

MB1

IOP

IOP

connected, but not active ) Message channel SN-MB/MB-SN through

CP

connected, but not active

20/09/09

EXCHANGE OF MESSAGES BETWEEN LTG AND CP, LTG AND LTG (SN WITH 63 LTGS)

11

STRU CT UR E OF TH E LTGG LTG

FU NCT ION AL UNITS OF LTGG •

• • •

FUN CT IONAL UNI TS IN THE LIN E/TRUNK UNIT (LT U) FUN CT IONAL UNI TS IN THE SIG NALIN G UN IT (S U) GRO UP S WITCH AND LIN K IN TE RF ACE UN IT (G S GRO UP PRO CE SSO R (G P)

20/09/09

12

LTU

GSL TO/FROM SU

DIU30 DIU:LDIB

LTG

LTU COUB

SPHI SPHO

to/ from SN

SIHI SIHO

LTU CR

Add. signals

LTU

ATE:T ATE:TM ETEAE

LTU OCANEQ

GP 20/09/09

FUNCTIONAL UNITS OF THE LINE/TRUNK UNIT

(LTU)

13

SU

SPHO (2 Mb/s) GSL

SPHO (2 Mb/s) CRM

CRP

RM:CTC

TOG

LTG

SPHO (2 Mb/s) SIHI SIHO

to/ from SN

ADDR. SIGNAL

LTU

LTU

GP 20/09/09

FUNCTIONAL UNITS IN THE SIGNALING UNIT (SU)

14

SU

SPHO/I 2 Mb/s 0,1 0/1*

LTU0

GS part

GSL

LIU part

LTG

2 DATO0

LTU4/ SU*

DATO1

6/1*

SN0 SN1

DATI0 SN0 DATI1 SN1

To/from SILCB (GP)

CDIM/CDAM SPHO/I 11

SYNI

MCHO/I

GP

*) SPHO/I1 for LTGG with C-function (SU instead of LTU4) 20/09/09 Functional

Unit ‘Group switch and interface unit (GSL)’ for LTGG

15

LTU

SIHO to LTU/SU

LIU part

GS part

SIHI from LTU/SU

DATO/I

TO/ o/

LTU

LTG

FROM rom N SN

DATO/I

CGSM  

SILCB M PART ADDRESS SIGNALSSYNI MCH 0/1

RESET

 

20/09/09

PMU

SIB O/I

CLOCK    TO PMUetc

GP

CG PART

MCH PART 16

  GS

LTU0......LTU3   SU

D C C

D I U 3 0 b

D I U 3 0 b

D I U 3 0

b

D I U 3 0 b

C R

T G O S G L

 

SU

GP

LTU0......LTU3

D I U 3 0

C R

C P G M S U M

 

a

b

D I U 3 0

D I U 3 0

D I U 3

b

b

b

C R

SU

GS GP

SU

G O S G L T

C P G M S U M

C LTGR

D C C

0

a

(a) RM:CTC if CCS is used (b) COUB is used for conference calls

F:LTGG

LTGG (C-FUNCTION) FRAME LAYOUT   D C C

D I U 3 0 b c

LTU0…......LTU4

D I U 3 0

D I U 3 0

D I U 3 0

b c

b

b

C R

SU T O G

GS G S L

GP C P G M S U M

 

S I L C B

SU

C R

a

 

LTU0…......LTU4

D I U 3 0

D I U 3 0

D I U 3 0

D I U 3 0

b c

b c

b

b

C R

SU GS

T O G

G S L

GP C P G M S U M

 

S I L C B

(a) RM:CTC if CCS is used F:LTGG (b) COUB is used for conference calls (c) DIU:LDIB instead of DIU30 in LTU0 and 1 when local DLUs are connected (location corresponding to LTU2 and 3 are left vacant) 20/09/09 17

SU

D C C R C

a

FUSE BAR F:LTGG LTGG

LTG

LTGG

F:LTGG LTGG

LTGG

F:LTGG LTGG

LTGG

F:LTGG LTGG

LTGG F:LTGG

20/09/09

LAYOUT OF LTGG RACK

18

FUSE PANEL

FUSE PANEL

TSG0.x or SSG0.x or SN0

F:LTG0

LTG

*)

TSG1x or SSG1x or SN1

F:LTG1

F:LTG0

F:LTG2

F:LTG1

F:LTG3

F:LTG2

F:LTG3

20/09/09

TSG0.x or SSG0.x or SN0 TSG1x or SSG1x or SN1

RACK FOR SWITCHING NETWORK B AND LINE/TRUNK GROUP (R:SN(B)/LTG) WITH CABLE LEAD-IN FROM TOP AND FROM BOTTOM

*)

19

STRUC TU RE OF THE LT GM LTG







THE LTGM IS US ED FOR ALL CO NNECT ION O F OCAN EQ.

TAS KS EX CE PT

ONLY THREE MODULES ARE NECE SSAR Y FOR A CO MPLE TE LT GM WI TH FOUR PCM SY STE MS CO NNECT ED. FOR SPECIAL FUN CT ION ,FOURTH MODULE CAN BE IN SERT ED I N LT G (F N. -B)

20/09/09

20

DET AILS OF MO DU LES OF LT GM

LTG

       DI U 120A OR DIU : LDI M : - DIU120A :T HE 4 PCMS ARE COMBI NE D TOGE THER WITH

THE CURR EN T CONV ERT ER ON THIS MO DUL E. LOG ICA LLY, THI S MO DULE IS TREA TED AS LTU0 TO LT U3 WIT H ORD IN ARY DIU3 0 MODULES. - DI U:LD IM: OPTIO NAL LY, THI S MOD ULE CAN BE US ED TO CO NNECT A DLU VIA A 4M BP S LOC AL DLU INTER FAC E



THE GPL LTGM ):

MODULE

(GRO UP

PROCE SSO R

FOR

IT HO LDS THE PMU AN D, IF RE QUI RED , THE SIL C FUN CTIO NAL ITY. TWO DIFFE REN T MODUL ES ARE USED :

-G PL :

GRO UP PROC ES SOR FO R LTGM WITHO UT SILC FUN CTIO N - GPLS : GR OU P PRO CES SOR FO R LTGM WITH SILC FUN CTION 20/09/09

21

DET AILS OF MO DU LES OF LT GM

• -

-

LTG

The GS M (g rou p swi tch f or LTGM ) : It is a comb inati on of GSL, TOG, RM : CTC, CR and GCG . Depen di ng on the avail able on boa rd comp onen ts , dif ferent GSM mod ules are used. The las t th re e dig its of the GSMa bc mod ul es def in e th e mod ul e ty pe. Th e 4th characte r (cal led a) desig nated by Y the PCM 30, by Z PCM24 . For the 5th and 6th ch aracte r the f ol lowin g ta ble app lies :

20/09/09

22

DET AIL OF M OD ULES OF LTGM

b

c

A

Eig ht CRPC Circ uit s

Yes

Yes

C

Eig ht CRM R2 Circ uit s

Yes

Yes

D

Fou r R M:CTC Circ uit s

Yes

-

LTG

Examp le: GSM YAA and G SMY CC hol ds 16 CRPC and CRM R2 cir cuit s. resp ectively whe re as GS MYDC h old s 8 CRM R2 p lus 4 RM :CTC circ uits. 20/09/09

DETAI LS OF GSM MODU LES IN LTG M

23

DET AIL OF M OD ULES OF LTGM 4 th mod ule in LT GM (LT U:S)

LTG

A PHM A ca n be ins tal led to conn ect an Acce ss Netw ork AN vi a V5.2 i nt erf ace.  An MDTOG can be insta lled to sup port the featu re CL IP for analo g subsc rib ers . This mod ule is use d to deliver th e A-p arty num ber to an alog wire d subscri bers of th e exc hang e. Th e used meth od is call ed Frequ ency Shift Key FSK. A MDTOG can be conn ec ted via SN to any an alog DLU port of th e EW SD exchang e (p ool sol ution ).  A CO UC can be in stall ed to supp or t larg e conf erences . The new CO UC mod ul e has 32 ports , whi ch ca n be used in any co mbi nati on (e.g . on e conf erence with 14 subsc rib ers and two with 9 subscri bers. comp ens ati on.  An MCT can be insta lled to sup port the mi d ca ll tri gger fun ctio n.  ATE : N can be insta lled as automatic tes 20/09/09An 24 t 

    LTU 

    with

DIU 120 A or DIU : LDIM*

LTG

  

LTU : S  with

COUC or PHMA or MDTOG or

    

GS, LIU, TOG , RM: CTC, CR, GCG

     

MCT or ATE : N

GSM *2

x 4 Mbps link for Local DLU interface

PMU, SILC*

20/09/09

8 Mbps SDC to SN 0/1

    

GPL

STRUCTURE OF THE LTGM

25

LTGMO D I U 1 2 0

L T U : S

LTGM1 G S M

G P L / G P L S

D I U 1 2 0

L T U : S

G S M

LTGM2 G P L / G P L S

D I U 1 2 0

L T U : S

G S M

LTGM4

LTGM3 G P L / G P L S

D I U 1 2 0

L T U : S

G S M

G P L / G P L S

D I U 1 2 0

A

A

A

A

A

/

/

/

/

/

D

D

D

D

D

I

I

I

I

I

U

U

U

U

U

L

L

L

L

L

D

D

D

D

D

I

I

I

I

I

M

M

M

M

M

L T U : S

G S M

G P L LTG / G P L S

FRAME FOR LTGM, F:LTGM ( A) (LTU:S ONLY FOR LTGM IN B FUNCTION ) 20/09/09

26

FRAME, RACK FOR LT GM













20/09/09

LT GM HAS ONLY THREE MOD ULES (FO UR W IT H T HE OP TIO NAL L TU : S ) FIVE LTGS CAN BE ACCOMOD AT ED IN ONE F RAME UP TO 30 LTGMS CAN BE INS TAL LED IN ONE R ACK. EACH LTG HAS ITS OW N CU RR ENT CONVE RTE R, LOCAT ED ON THE DIU120A OR D IU:LD IM MOD ULE. IN CASE OF SN(B) VER SION OF SW ITCH ING NET WOR K, SN IS HOU SED IN A COMP OS IT E R ACK R :S N( B)/L TGM. HER E TSG (B)/S SG(B) OCCUP YING TWO FRAME S WIL L BE HO USED ALONG WI TH 20 L TGMS IN FOU R F :LTGM.

LTG

27

ST RUCT URE OF LT GN

 







LTG

THE LTGN IS THE NEWEST REL EASE OF THE LTG. ONLY ONE MO DUL E MAKE S UP A CO MPLE TE LTGN F OR THE BASIC TASKS THE LTGN HARDWARE CO MBI NES EVE RY PO SSI BLE FUNCTIO NAL UN IT ON THIS SIN GLE MODULE, E. G. DI FFERENT CO DE RE CEIVE RS IN LO GICAL LTU AND SU PO SITIO NS. FOR SPECIAL FUN CT IONS A SECO ND MODULE E.G. PHMA, MDTO G,CO UC, MCT AND ATE :N BEIN G US ED. FUN CT IONS ALRE AD Y CO VERE D I N LT GM. AN OTHE R MODULE NAM EL Y OCEN IS US ED FOR OCAN EQ F UN CT IONS .

20/09/09

28

ST RUCT URE OF LT GN



LTG

DEPEN DIN G ON TH E AP PL ICA TIO N, DIFFEREN T MO DUL E TYPES ARE USED AND GIVEN IN FO LLOWI NG TAB LE:

20/09/09

NAME

TYP E

ME MORY

SIL C

GPNLE

LO CAL DLU INTE RF ACE

64 Mb yte

YES

GPNLD

LO CAL DLU INTE RF ACE

32 Mb yte

YES

GPNYE

PCM 30

64 Mb yte

YES

GPNYD

PCM 30

32 Mb yte

YES

GPNYC

PCM 30

16 Mb yte

NO 29

GPN 4 x PCM30 or 2xLDI (4Mbps)

   DIU

part 

        SILC

LTU:S (optional) COUC MDTOG PHMA MCT ATE:N

CR part

GCG part

LTG

part  IOP Part 8Mbps GS, LIU, TOG part

SDC to SN 0/1

GP part

20/09/09

STRUCTURE OF THE LTGN

30

FRA ME/RA CK S FOR LT GN  

 







LTG

THER E AR E TWO DIF FERE NT FRA ME TYP ES FO R THE LTGN. IF THE LTU : S FUN CTIO N IS NOT NE ED ED , 16 LTGN S CAN BE INSTAL LE D IN ONE FRA ME (F:L TGN( A)). UP TO 64 LTG CA N BE INSTALL ED IN A RAC K. WHEN THE LT U: S IS NE CES SARY (E.G. PHM A OR CO UC ), ONL Y EI GHT LT GS ARE POSSIBL E (F: LT GN (B)). IN CASE OF SN(B ) , SN IS HO US ED IN A CO MPOSIT E RA CK R:S N(B )/LT GN. HER E TSG(B)/S SG(B) OCC UP YI NG TWO FRA MES WILL BE HOU SED ALO NGWI TH LTGN S IN THREE F:L TGN. ANO THER TYPE OF COM POS IT E RA CK PRO VID ES TWO FRA MES FOR TSG(B)/S SG(B), TWO FRA MES FO R MB/CC G(B) AND MAX IM UM OF ONE FRA ME FO R LTGN. EA CH LTGN HA S ITS OW N ON-BOARD CURR EN T CON VERT ER. AL L LTGNS OF ON E FRAM E AR E CON NEC TED TO ONE PAIR OF FUS ES.

20/09/09

31

LTGN0-LTGN15 G P N

G P N

GPN

G P N

G P N

G P N

G P N

G P N

G P N

G P N

G P N

G P N

G P N

G P N

G P N

G P N

G LTG P N

L T U : S

G P N

L T U : S

G P N

FRAME FOR LTGN, F:LTGN ( A) LTGN0-LTGN15 G P N

20/09/09

L T U : S

GPN

L T U : S

G P N

L T U : S

G P N

L T U : S

G P N

L T U : S

G P N

L T U : S

G P N

FRAME FOR LTGN, F:LTGN ( B)

32

FRAME/ RACK FOR L TGN

LTG

CR, CAN , DISP C OMM AN DS CR L TG

CAN LTG

DISP LTG

CR L TU

CAN LTU

DISP LTU

CR C RMOD

CAN CRM OD

DISP CR MOD

STAT ,C ON F,D IA G C OMM AN DS ST AT LTG

CO NF L TG

DIAG L TG

ST AT DI U

CO NF D IU

DIAG D IU

ST AT CR

CO NF C R

DIAG C R

ST AT CO U

CO NF C OU

DIAG C OU

ST AT OCAN ST AT EQ MDTOG

CO NF OCAN CO NF EQ MDTO G

DIAG OCAN DIAG EQ MDTO G

20/09/09

33

ST AT US COMM ANDS 

LTG

STAT LTG : LT G = t sg -ltg ;

NO .

LTG

CH0

CH1

NO .

LTG

CH0

CH1

0-1

ACT

STB

ACT

0-2

AC T

ACT

STB

0-3

ACT

STB

ACT

0-4

AC T

STB

ACT

0-5

ACT

AC T

STB

0-6

AC T

STB

ACT

0-7

ACT

AC T

STB

0-8

AC T

ACT

STB

. .

. .

. .

. .

. .

. .

. .

. .

0-60

ACT

STB

ACT

0-61

AC T

ACT

STB

0-62

ACT

STB

ACT

0-63

AC T

ACT

STB

1-1

ACT

STB

ACT

1-2

AC T

ACT

STB

20/09/09

34

ST AT US COMM ANDS



LTG PCM 0-1 0-1 0-1

LTG

STA T DIU : LTG = ts g- ltg;

DIU

DIUT YP AP PLI C

OST LTG

OST DIU

0 1 2

D30 D30 D30

AC T AC T AC T

AC T AC T AC T

20/09/09

CC SLD I CC SDLU EXT LD I

OST AC T AC T AC T

35

ST AT US COMM ANDS



LTG

STAT CR: LTG= TSG-LTG;

20/09/09

LTG 0-1 0-1 0-1 0-1 0-1 0-1 0-1 0-1 0-1 0-1 0-1 0-1 0-1 0-1 0-1 0-1

LCPO S 4-0-0 4-0-1 4-0-2 4-0-3 4-1-0 4-1-1 4-1-2 4-1-3

CR POS

0-0 0-1 0-2 0-3 1-0 1-1 1-2 1-3

CR TYP CR PC CR PC CR PC CR PC CR PC CR PC CR PC CR PC CR PC CR PC CR PC CR PC CR PC CR PC CR PC CR PC

OST LT G ACT ACT ACT ACT ACT ACT ACT ACT ACT ACT ACT ACT ACT ACT ACT ACT

O ST CR ACT ACT ACT ACT ACT ACT ACT ACT ACT ACT ACT ACT ACT ACT ACT ACT

36

ST AT US COMM ANDS



LTG

STA T COU: LTG=TSG-LTG;

LTG

CO U

CO UTY

OST LTG

OST COU

0-8

3

Y2 2

AC T

AC T

20/09/09

37

CONFIGU RAT IONS

LTG

GENER AL PRI NCI PLE : • The unit to be dia gn os ed must be MBL for fault clea ra nce . If the Unit to be cl ea red is not MB L, it must be con figu red to MB L be fore fault cle ara nce. If the unit is in AC T, it shou ld be con figu re d fir st to CB L and then to MBL . Wh en the unit has been succe ssf ully cle are d of faults it should be con figu re d ba ck to AC T. • In ca se of Digi ta l Inter face Un it s (D IU) whic h are connect ed to Dig it al Lin e Un it s (D LU) , the CO NF DIU com mand will not work . For con figu ri ng them to som e de sir ed status, th e side of the DLU to wh ich th e said DIU is con nect ed ca n be configu red by com mand CO NF DLU.

CO NF L TG : LTG = tst-ltg , OST = CB L;

This com mand bloc ks the LT G for call pr oces sin g, i.e. new sei zures are no lon ge r pos sibl e. 20/09/09

38

DIAGNOST ICS



LTG

LTG DIAG NOSTI CS •THE LT G MAY BE DIAG NO SED ONL Y IN MBL STATUS.

DIAG L TG :

LTG=ts g-l tg , TA=ALL ;

•DIAG ON OSID OF SU B UNITS OF LTG •The prer eq uis ite for carr yi ng dia gnos tic s on any of th e abo ve subunits is : LTG = ACT or CBL DIU/C R/CO U/O CAN EQ = MBL •The comm and is

20/09/09

DIAG DIU/CR/COU /OCA NEQ

39

CREAT ION O F LT G

LTG

CR LTG: LTG = 0-1, Typ e = LTGB, LD PAR P = 12 ; CR LTG: LTG = 0-2, Typ e = LTGB, LD PAR P = 52; ( f or V5.2 in terface ) CR L TG : LTG = 0-3, Ty pe = LTG C, LD PAR P = 13 ; CR L TG : LTG = 0-4, Ty pe = LTG H, LDPAR P = 60 ;

20/09/09

40

CREAT ION OF L TU LTG



To cre ate a mod ule in a LT U, two variant s ar e dis ting uishe d: -W ith ap pl icatio n (f or DI U mod ules ) -W ithou t applicat ion ( for ev eryth in g else)

VA LUES FO R PARA METER :TYP E D30 DIU3 0 for PCM 30 syste m U0 7 OCAN EQ eq uip me nt (O CE :S PM, OCE :S PC, OCE :MU P) Y2 5 CO UC for mu lt ipa rt y serv ic e (con fer en ce) in LTGM /N COUB for multipa rt y serv ice (con fere nce) in LT GG V15 MD TOG for CL IP for analog wire d subsc ri ber s PMA PHM A for LTGM/N to con nect an AN via V5.2 in ter face ATE TEM :L E for te stin g ATM AT E:T M for te stin g 20/09/09

41

CREAT ION OF L TU LTG



VAL UES FO R PA RAMET ER :TY PE V01

8 code rec ei ve rs for MFC :R2 sign ali ng, TETPCPRT &TPCPRT ports

V02

8 code rec ei ve rs for pu shbutton dia lin g, TETPCPRT &TPCPRT ports

V03

8 cod e rec ei ve rs for pu shbutton di alin g, TLFB & TESTNO

V04

ET EA E, TET PCP RT & TPCPRT por ts

V08

TECO NF port s

V09

8 cod e rece iv er s for pu shbu tt on dia lin g, TLF, RBS & TESTNO port s

V10

DIUP ORT s, Ala rm ca ll por ts

V11 20/09/09

TETPCPRT & TPCPRT port s

42

CREAT ION OF L TU LTG



VA LUES FO R PARA METER : AP PL ICA TIO N

CC SCC S

Tru nk with Comm on Ch annel Si gn ali ng No. 7

CA SCA S

Tru nk with Ch annel as so ci ated sign aling

CC SDLU

PD C from DLU wit h CCS

EX TDL U

PD C from DLU wit hou t C CS

CC SLDI

PD C from Loca l DL U with CC S

EX TLD I

PD C from Loca l DL U withou t CCS

CA SRCA

Ch ann el Associate d Sig nalin g ann ou nceme nt mac hin es

CC SPA

Sig nalin g for Pri mary Acces s (l arge PABX)

V52I F

Con nection of AN on v5.2 interf ace

20/09/09

for

re cord ed

43

CREAT ION OF L TU

LTG

(a) Creation of Local DLU interface CR LTU: LTG = 0-1, LTU = 0, Type = D30, APPLIC CCSLDI; CR LTU: LTG = 0-1, LTU = 1, Type = D30, APPLIC CCSLDI; CR LTU: LTG = 0-1, LTU = 2, Type = D30, APPLIC EXTLDI; CR LTU: LTG = 0-1, LTU = 3, Type = D30, APPLIC EXTLDI; (b) Creation of Remote DLU interface CR LTU: LTG= 0-5, LTU = 0, Type = D30, APPLIC CCSDLU; CR LTU: LTG= 0-5, LTU = 1, Type = D30, APPLIC CCSDLU; CR LTU: LTG= 0-5, LTU = 2, Type = D30, APPLIC EXTDLU; 20/09/09 CR LTU: LTG= 0-5, LTU = 3, Type = D30, APPLIC = 44

= = = =

= = =

CREAT ION OF L TU (d)

LTG

Creat ion o f LTU oth er th an conn ecti ng PDC s

• Crea ti on • • • •

of code re ce ive rs for DTMF dia li ng in LTU CR LT U : LT G= 0-1, LT U=4 , Typ e=V 03; Not e: LT U 4 shou ld be use d for LTGG wher ea s LT U 6 shou ld be used for LT GM or LTGN Cr ea tion of Con fere nce Un it CR LT U : LT G=0 -7, LT U=3 , Typ e=Y2 2 ; Cr ea tion of LT U for ET EA E CR LT U : LT G=0 -6, LT U=3 , Typ e=V 04, MO DVAR =1 -0; Cr ea tion of LT U for tes t con fere nce (T EC ONF ) port s CR LT U : LT G=0 -1, LT U=6 , Typ e=V 08; Cr ea ti on of LTU for tra nsla ti on functi on (T LF), ri ng ba ck ser vic e (R BS ) and tes t numb ers (T ESTNO) port s CR LT U: LT G=0 -1, LT U=5 , Typ e=V 09, MO DVAR =0 -0 & 1-0;

20/09/09

45

CREAT ION OF L TU

LTG

(d ) Cre at ion of LT U ot he r than conn ec ting PDC 



Cr eati on of L TU for tes t phon e con trol (TPCPRT & TET PCPR T) ports of work sta ti on CRLTU : L TG =0 -1, LTU= 7, Ty pe=V 11; Cr eatio n of LTU for alarm call p orts CRLTU : L TG =0 -3, LTU= 4, Typ e=V 10, MOD VAR=0-3;

20/09/09

46

CREAT ION OF L TU

LTG

(e) Cr eat io n of LTU for furthe r modu les in LTGM/N Creation of CR L Creation of CR L

20/09/09

MDTOG TU : LTU for TU :

loc ated i n LTU:S LTG =0-5 , LTU=5 , TYP E=V 15 ; PH MA LTG=0-2 , L TU =5, TYP E=PM A;

47

CR EAT ION OF COD E RECEIVERS 

IN SULTG

CR PC IN LTG 0- 1, RMCTC/CRM R2 in LTG 0- 3 & CR MR2 in LT G 0- 8:

CR CRM OD :

LTG = 0-1, CRM OD=0 ,T YP E= CRP C;

CR CRM OD :

LTG=

CR CRM OD :

LTG = 0-3, CRM OD = 0, TYPE =R MC TC;

CR CRM OD :

LTG = 0-3, CRM OD = 4, TYPE = CRM R2 ;

CR CRM OD :

LTG = 0-3, CRM OD = 5, TYPE = CRM R2 ;

CR CRM OD :

LTG = 0-8, CRM OD = 0, TYPE =C RM R2 ;

CR CRM OD :

LTG = 0-8, CRM OD = 1, TYPE = CRM R2 ;

CR CRM OD :

LTG = 0-8, CRM OD = 4, TYPE = CRM R2 ;

CR CRM OD :

LTG = 0-8, CRM OD = 5, TYPE = CRM R2 ;

20/09/09

0-1, CRM OD=1 , TYP E= CRP C;

48

To d is pl ay ex ist ing LT Gs /LT Us/ CRs DI SP LTG : LTG TYPE 0-1 0-2 0-3 0-4

LTGB LTGB LTGC LTGH

DISP CR MOD : LTG

20/09/09

LTG

LTG = 0-x ; LDPARP 12 52 13 60 LTG = 0-1 ; CRM OD

TYP E

0-1

0

CRP C

0-1

1

CRP C

49

To d is pl ay ex ist ing LT Gs /LT Us/ CRs LTG 

DIS PLTU: LTG= 0-1;

LTG

LTU

APPLI C

MOD VAR

0

T YPE D30

0-1

CC SLDI

0-1

1

D30

0-1

2

D30

CC SDL U EX TLD I

0-1& 1-1& 1 0-1& 1-1& 1 0-1& 1-1&

0-1

3

V04

0-1

4

V09

0-1

5

V03

0-1

6

V08

0-1

7

V10

20/09/09

2-1& 3-1& 4-1& 5-1& 62-1& 3-1& 4-1& 5-1& 62-1& 3-1& 4-1& 5-1& 6-

1 0-1& 1-0 & 2-1& 3-1& 4-1& 1 0-1& 1-1& 2-1& 3-1& 4-1& 1 0-0& 1-0 & 2-1& 3-1& 4-1& 1 0-1& 1-1& 2-1& 3-1& 4-1&

5-1& 65-1& 65-1& 65-1& 6-

1 0-3 & 1-1& 2-1& 3-1& 4 -1& 5-1& 61 50

LINE T RUNK GROU P



20/09/09

LTG

THANK YOU

51