ltg
TRANSCRIPT
08/04/23 1
LTG
INTRODUCTION
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.
08/04/23 2
LTG
OMT PRINTER
SN
DLU LTG(B)
LTG(C)
CCNC
CPMB
CCG
SYP
LINES
TRUNKS
MTD MDD
08/04/23 3
LTG
1
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• WITH PRIMARY RATE ACCESS (PA) :• • FOR MEDIUM-SIZE AND LARGE ISDN PBXS (ISDN SUBSCRIBERS WITH
PA) OPERATING AT TRANSFER RATE OF 2048
CONFIGURATION OPTIONS
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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 FOR INTERPROCESSOR COMMUNICATION IN THE EWSD SYSTEM.
OTHER DETAILS
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LTGLTG TYPES
FUNCTIONAL LTG TYPE LTG HW TYPE
TYPE B:-DLU-PBX (ISDN-PA)-V5.2 ACCESS NETWORK(ONLY TO LTG M/N/P)CAN BE EQUIPPED WITH OCANEQ,COU, MDTOG
LTG G/M/N/P
TYPE C:-TRUNKS WITH CAS SIGNALING-TRUNKS WITH CCS7 SIGNALING- CCS7 SIGNALING CHANNEL
LTG G/M/N/P
TYPE D: INTERNATIONAL TRUNKS LTG D
TYPE H: X25 DATA PACKETS FROM ISDN SUBS.
LTG H
08/04/23 6
LTGLTG FUNCTIONS
(a) CALL 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 (GP)
- -SENDING/ RECEIVING ORDERS TO/FROM CCNC
- -CONTROLLING THE SIGNALS TO DLU, PA
- -ADAPTING THE LINE CONDITIONS TO THE 8 MBPS INTERFACE TO THE
SN
- -THROUGH-CONNECTION OF MESSAGES AND USER INFORMATION
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LTGLTG FUNCTIONS
(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
- -EVALUATING ERRORS TO DETERMINE PENETRATION RANGE
- -INITIATING MEASURES CORRESPONDING TO THE PENETRATION
RANGE
- -EXCHANGING ROUTINE TEST MESSAGES WITH THE CP SO THAT CP
CAN DETECT A FAULTY LTG
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LTGLTG FUNCTIONS
( 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
-ATE:T INTEGRATED IN EWSD AND THE ATE:TM
--INDICATING IMPORTANT INFORMATION
(E.G. CHANNEL ASSIGNMENTS) TO THE FUNCTIONAL UNITS
--CREATING, BLOCKING, RELEASING DEVICES VIA MML COMMANDS
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LTG
SUBSCRIBER CONNECTION (SN0 ACTIVE)
CP
nSDCSDC
SDC 1SDC
SN1
ZZ
n
1
SN0
ZZ
n
1SDC 1
SDC
LTG1LIU x
x
Time slot
xx
GP
A-side
MB0
IOP
MB1
IOP
SDC n
SDC
LTGnLIU y
y
Time slot
yy
GP
B-side
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LTG
LTG No. Active MCH. via
LTG No. Active MCH. via
X-12 SN-1X-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
STANDARD DISTRIBUTION OF ACTIVE MESSAGE CHANNELS
OF LTGS IN SN-HALVES
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LTG
EXCHANGE OF MESSAGES BETWEEN LTG AND CP, LTG AND LTG (SN WITH 63 LTGS)
CP
63
1
SN1
63
1
SN0
63
1 1
00
Time slot
00
MB0
IOP
MB1
IOP
63
00
Time slot
00
xx
xx
126 2*
2* 126
126*
2
2
126*LTG63LIU
GP
LTG1LIU
GP
-- Message channel LTG-SN/SN-LTG through connected, but not active *) Message channel SN-MB/MB-SN through connected, but not active
yy
yy
08/04/23 12
LTG
STRUCTURE OF THE LTGG
FUNCTIONAL UNITS IN THE LINE/TRUNK UNIT (LTU) FUNCTIONAL UNITS IN THE SIGNALING UNIT (SU) GROUP SWITCH AND LINK INTERFACE UNIT (GSL) GROUP PROCESSOR (GP)
FUNCTIONAL UNITS OF LTGG
08/04/23 13
LTG
Add. signals
SIHOSIHI
SPHO
SPHI
LTU
DIU30
LTU
COUB
LTU
CR
LTUATE:T
LTU
OCANEQ
TO/FROM SU
to/from SN
GSL
GP
FUNCTIONAL UNITS OF THE LINE/TRUNK UNIT (LTU)
DIU:LDIB
ATE:TM
ETEAE
08/04/23 14
LTG
FUNCTIONAL UNITS IN THE SIGNALING UNIT (SU)
SU
TOGRM:CTC
LTU
ADDR. SIGNAL
SIHO
SIHI
SPHO (2 Mb/s)
SPHO (2 Mb/s)
to/from SN
GSL
GP
SPHO (2 Mb/s)
CRPCRM
LTU
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LTG
Functional Unit ‘Group switch and interface unit (GSL)’ for LTGG
SPHO/I2 Mb/s
0,10/1*
2
DATI0
DATO0
SU
GSL
GP
GS part LIU part
LTU0
LTU4/SU*
To/fromSILCB(GP)
SYNI MCHO/I
*) SPHO/I1 for LTGG with C-function (SU instead of LTU4)
SN0SN1
SN0SN1
6/1*
DATI1
DATO1
CDIM/CDAM SPHO/I 11
08/04/23 16
LTG
Note: SILCB(_ _ _) ONLY FOR LTG WITH DLU/PA
Functional unit “Group processor (GP)
DATO/I
DATO/I
CGSM
MCH 0/1
GP
GSL
GS
partLIU
part
LTU
SM PARTADDRESS SIGNALS
CG PART
MCH PART
PMU
SILCB
RESET SYNI
SIB O/I
SIHO to LTU/SU
SIHI from LTU/SU to/
fromSN
LTU
CLOCK TO PMUetc
TO/
FROM
SN
08/04/23 17
LTG
CR
(a) RM:CTC if CCS is used F:LTGG(b) COUB is used for conference calls
LTGG (C-FUNCTION) FRAME LAYOUT
(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)
LTGG (B-FUNCTION) FRAME LAYOUT
LTU0......LTU3
DCC
DIU30
b
DIU30
b
DIU30
b
DIU30
b
GP
CGSM
PMU
SU SU
CR
LTU0......LTU3
DIU30
b
DIU30
b
DIU30
b
DIU30
b
CR
a
PMU
SU
CR
a
TOG
TOG
GP
CGSM
DCC
SU
CR
a
LTU0…......LTU4 LTU0…......LTU4SU SUSUSU
DIU30
bc
DIU30
bc
DIU30
b
DIU30
b
DIU30
bc
DIU30
bc
DIU30
b
DIU30
b
CR
CR
TOG
TOG
GSGP GP
CGSM
CGSM
PMU
PMU
SILCB
SILCB
CR
a
DCC
DCC
GS
GSL
GSL
GS GS
GSL
GSL
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LTG
FUSE BAR F:LTGG
LTGG LTGG
F:LTGG
LTGG LTGG
F:LTGG LTGG
LTGG
F:LTGG LTGG
LTGG
F:LTGG
LTGG
LTGG
LAYOUT OF LTGG RACK
08/04/23 19
LTGTSG0.x or
SSG0.x or SN0
FUSE PANEL
F:LTG3
F:LTG2
F:LTG1
F:LTG0
TSG1x or SSG1x or SN1
*)
FUSE PANEL
F:LTG3
F:LTG2
F:LTG1
F:LTG0
*)TSG1x or
SSG1x or SN1
TSG0.x or SSG0.x or SN0
RACK FOR SWITCHING NETWORK B AND LINE/TRUNK GROUP (R:SN(B)/LTG) WITH CABLE LEAD-IN FROM
TOP AND FROM BOTTOM
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LTG
STRUCTURE OF THE LTGM
THE LTGM IS USED FOR ALL TASKS EXCEPT CONNECTION OF OCANEQ.
ONLY THREE MODULES ARE NECESSARY FOR A COMPLETE LTGM WITH FOUR PCM SYSTEMS CONNECTED.
FOR SPECIAL FUNCTION ,FOURTH MODULE CAN BE INSERTED IN LTG (FN.-B)
08/04/23 21
LTGDETAILS OF MODULES OF LTGM
DIU 120A OR DIU: LDIM: - DIU120A:THE 4 PCMS ARE COMBINED TOGETHER WITH THE CURRENT CONVERTER ON THIS MODULE. LOGICALLY, THIS MODULE IS TREATED AS LTU0 TO LTU3 WITH ORDINARY DIU30 MODULES. - DIU:LDIM:OPTIONALLY, THIS MODULE CAN BE USED TO CONNECT A DLU VIA A 4MBPS LOCAL DLU INTERFACE
THE GPL MODULE (GROUP PROCESSOR FOR LTGM): IT HOLDS THE PMU AND, IF REQUIRED, THE SILC FUNCTIONALITY. TWO DIFFERENT MODULES ARE USED:
-GPL: GROUP PROCESSOR FOR LTGM WITHOUT SILC FUNCTION-GPLS: GROUP PROCESSOR FOR LTGM WITH SILC FUNCTION
08/04/23 22
LTGDETAILS OF MODULES OF LTGM
The GSM (group switch for LTGM) : - It is a combination of GSL, TOG, RM : CTC, CR and
GCG. Depending on the available on board components, different GSM modules are used.
- The last three digits of the GSMabc modules define the module type. The 4th character (called a) designated by Y the PCM30, by Z PCM24 . For the 5th and 6th character the following table applies:
08/04/23 23
LTGDETAIL OF MODULES OF LTGM
b c
A Eight CRPC Circuits
Yes Yes
C Eight CRMR2 Circuits
Yes Yes
D Four RM:CTC Circuits
Yes -
Example: GSMYAA and GSMYCC holds 16 CRPC and CRMR2 circuits. respectively whereas GSMYDC holds 8 CRMR2 plus 4 RM:CTC circuits.DETAILS OF GSM MODULES IN
LTGM
08/04/23 24
LTG
DETAIL OF MODULES OF LTGM4th module in LTGM (LTU:S)
A PHMA can be installed to connect an Access Network AN via V5.2 interface.
An MDTOG can be installed to support the feature CLIP for analog subscribers. This module is used to deliver the A-party number to analog wired subscribers of the exchange. The used method is called Frequency Shift Key FSK. A MDTOG can be connected via SN to any analog DLU port of the EWSD exchange (pool solution).
A COUC can be installed to support large conferences. The new COUC module has 32 ports, which can be used in any combination (e.g. one conference with 14 subscribers and two with 9 subscribers. compensation.
An MCT can be installed to support the mid call trigger function.
An ATE : N can be installed as automatic test equipment.
08/04/23 25
LTG
LTU
with DIU 120 A or DIU : LDIM*
LTU : S with
COUC or PHMA or MDTOG or MCT or ATE : N
GS, LIU, TOG , RM: CTC, CR, GCG
GSM
GPLPMU, SILC*
STRUCTURE OF THE LTGM
8 Mbps SDC to SN 0/1
*2 x 4 Mbps link forLocal DLU interface
08/04/23 26
LTG
DIU
120
A,
DIU
:LD
IM
LTGMO LTGM3LTGM1 LTGM2 LTGM4
D
I
U
1
2
0
A
/
D
I
U
L
D
I
M
D
I
U
1
2
0
A
/
D
I
U
L
D
I
M
D
I
U
1
2
0
A
/
D
I
U
L
D
I
M
D
I
U
1
2
0
A
/
D
I
U
L
D
I
M
LTU:S
LTU:S
LTU:S
LTU:S
GSM
GSM
GSM
GSM
GSM
LTU:S
GPL /GPLS
G P L / G P L S
G P L / G P L S
G P L / G P L S
G P L / G P L S
D
I
U
1
2
0
A
/
D
I
U
L
D
I
M
FRAME FOR LTGM, F:LTGM ( A) (LTU:S ONLY FOR LTGM IN B FUNCTION )
08/04/23 27
LTGFRAME, RACK FOR LTGM
LTGM HAS ONLY THREE MODULES (FOUR WITH THE OPTIONAL LTU : S)
FIVE LTGS CAN BE ACCOMODATED IN ONE FRAME
UP TO 30 LTGMS CAN BE INSTALLED IN ONE RACK.
EACH LTG HAS ITS OWN CURRENT CONVERTER, LOCATED ON THE DIU120A OR DIU:LDIM MODULE.
IN CASE OF SN(B) VERSION OF SWITCHING NETWORK, SN IS HOUSED IN A COMPOSITE RACK R:SN(B)/LTGM.
HERE TSG(B)/SSG(B) OCCUPYING TWO FRAMES WILL BE HOUSED ALONGWITH 20 LTGMS IN FOUR F:LTGM.
08/04/23 28
LTGSTRUCTURE OF LTGN
THE LTGN IS THE NEWEST RELEASE OF THE LTG. ONLY ONE MODULE MAKES UP A COMPLETE
LTGN FOR THE BASIC TASKS THE LTGN HARDWARE COMBINES EVERY
POSSIBLE FUNCTIONAL UNIT ON THIS SINGLE MODULE, E.G. DIFFERENT CODE RECEIVERS IN LOGICAL LTU AND SU POSITIONS.
FOR SPECIAL FUNCTIONS A SECOND MODULE E.G. PHMA,MDTOG,COUC,MCT AND ATE:N BEING USED.FUNCTIONS ALREADY COVERED IN LTGM.
ANOTHER MODULE NAMELY OCEN IS USED FOR OCANEQ FUNCTIONS.
08/04/23 29
LTGSTRUCTURE OF LTGN
DEPENDING ON THE APPLICATION, DIFFERENT MODULE TYPES ARE USED AND GIVEN IN FOLLOWING TABLE:
NAME TYPE MEMORY SILC
GPNLE LOCAL DLU INTERFACE
64 Mbyte YES
GPNLD LOCAL DLU INTERFACE
32 Mbyte YES
GPNYE PCM30 64 Mbyte YES
GPNYD PCM30 32 Mbyte YES
GPNYC PCM30 16 Mbyte NO
08/04/23 30
LTG
DIU part GCG part CR part
SILC part
GS, LIU, TOG part
GP part
LTU:S(optional)
GPN
IOP Part
4 x PCM30 or2xLDI (4Mbps)
STRUCTURE OF THE LTGN
COUCMDTOGPHMAMCTATE:N
8Mbps
SDC to
SN 0/1
08/04/23 31
LTGFRAME/RACKS FOR LTGN
THERE ARE TWO DIFFERENT FRAME TYPES FOR THE LTGN. IF THE LTU : S FUNCTION IS NOT NEEDED , 16 LTGNS CAN
BE INSTALLED IN ONE FRAME (F:LTGN(A)). UP TO 64 LTG CAN BE INSTALLED IN A RACK. WHEN THE LTU: S IS NECESSARY (E.G. PHMA OR COUC),
ONLY EIGHT LTGS ARE POSSIBLE (F:LTGN(B)). IN CASE OF SN(B) , SN IS HOUSED IN A COMPOSITE RACK
R:SN(B)/LTGN. HERE TSG(B)/SSG(B) OCCUPYING TWO FRAMES WILL BE HOUSED ALONGWITH LTGNS IN THREE F:LTGN.
ANOTHER TYPE OF COMPOSITE RACK PROVIDES TWO FRAMES FOR TSG(B)/SSG(B), TWO FRAMES FOR MB/CCG(B) AND MAXIMUM OF ONE FRAME FOR LTGN.
EACH LTGN HAS ITS OWN ON-BOARD CURRENT CONVERTER. ALL LTGNS OF ONE FRAME ARE CONNECTED TO ONE PAIR OF FUSES.
08/04/23 32
LTG
FRAME FOR LTGN, F:LTGN ( A)
GP
N
LTGN0-LTGN15
G P N
GPN
GPN
GPN
GPN
GPN
GPN
GPN
GPN
GPN
GPN
GPN
GPN
GPN
GPN
GPN
FRAME FOR LTGN, F:LTGN ( B)
GP
N
LTGN0-LTGN15
LTU:S
GPN
LTU:S
GPN
LTU:S
GPN
LTU:S
GPN
LTU:S
GPN
LTU:S
GPN
LTU:S
GPN
LTU:S
GPN
08/04/23 33
LTGFRAME/RACK FOR LTGN
CR, CAN, DISP COMMANDS
CR LTG CAN LTG DISP LTG
CR LTU CAN LTU DISP LTU
CR CRMOD CAN CRMOD DISP CRMOD
STAT,CONF,DIAG COMMANDS
STAT LTG CONF LTG DIAG LTG
STAT DIU CONF DIU DIAG DIU
STAT CR CONF CR DIAG CR
STAT COU CONF COU DIAG COU
STAT OCANEQ
CONF OCANEQ
DIAG OCANEQ
STAT MDTOG
CONF MDTOG
DIAG MDTOG
08/04/23 34
LTGSTATUS COMMANDS
STAT LTG : LTG = tsg-ltg;
NO. LTG CH0 CH1 NO. LTG CH0 CH1
0-1 ACT STB ACT 0-2 ACT ACT STB
0-3 ACT STB ACT 0-4 ACT STB ACT
0-5 ACT ACT STB 0-6 ACT STB ACT
0-7 ACT ACT STB 0-8 ACT ACT STB
. . . . . . . .
. . . . . . . .0-60 ACT STB ACT 0-61 ACT ACT STB
0-62 ACT STB ACT 0-63 ACT ACT STB
1-1 ACT STB ACT 1-2 ACT ACT STB
08/04/23 35
LTGSTATUS COMMANDS
STAT DIU : LTG = tsg-ltg;
LTG DIU DIUTYP APPLIC OST LTG OST DIU OST PCM0-1 0 D30 CCSLDI ACT ACT
ACT0-1 1 D30 CCSDLU ACT ACT ACT0-1 2 D30 EXTLDI ACT ACT ACT
08/04/23 36
LTGSTATUS COMMANDS
STAT CR: LTG=TSG-LTG;LTG LCPOS CRPOS CRTYP OST LTG OST CR0-1 4-0-0 CRPC ACT ACT0-1 4-0-1 CRPC ACT ACT0-1 4-0-2 CRPC ACT ACT0-1 4-0-3 CRPC ACT ACT0-1 4-1-0 CRPC ACT ACT0-1 4-1-1 CRPC ACT ACT0-1 4-1-2 CRPC ACT ACT0-1 4-1-3 CRPC ACT ACT
0-1 0-0 CRPC ACT ACT0-1 0-1 CRPC ACT ACT0-1 0-2 CRPC ACT ACT0-1 0-3 CRPC ACT ACT0-1 1-0 CRPC ACT ACT0-1 1-1 CRPC ACT ACT0-1 1-2 CRPC ACT ACT0-1 1-3 CRPC ACT ACT
08/04/23 37
LTGSTATUS COMMANDS
STAT COU: LTG=TSG-LTG;
LTG COU COUTY OST LTG OST COU 0-8 3 Y22 ACT ACT
08/04/23 38
LTGCONFIGURATIONS
• The unit to be diagnosed must be MBL for fault clearance. If the Unit to be cleared is not MBL, it must be configured to MBL before fault clearance. If the unit is in ACT, it should be configured first to CBL and then to MBL. When the unit has been successfully cleared of faults it should be configured back to ACT.
• In case of Digital Interface Units (DIU) which are connected to Digital Line Units (DLU), the CONF DIU command will not work. For configuring them to some desired status, the side of the DLU to which the said DIU is connected can be configured by command CONF DLU.
CONF LTG: LTG = tst-ltg, OST = CBL;This command blocks the LTG for call processing, i.e. new seizures are no longer possible.
GENERAL PRINCIPLE:
08/04/23 39
LTGDIAGNOSTICS
LTG DIAGNOSTICS
•THE LTG MAY BE DIAGNOSED ONLY IN MBL STATUS.
DIAG LTG: LTG=tsg-ltg, TA=ALL;
•DIAGONOSID OF SUB UNITS OF LTG•The prerequisite for carrying diagnostics on any of the above subunits is : LTG = ACT or CBL
DIU/CR/COU/OCANEQ = MBL
•The command is DIAG DIU/CR/COU/OCANEQ
08/04/23 40
LTGCREATION OF LTG
CR LTG: LTG = 0-1, Type = LTGB, LDPARP = 12 ;
CR LTG: LTG = 0-2, Type = LTGB, LDPARP = 52;
( for V5.2 interface)
CR LTG: LTG = 0-3, Type = LTGC, LDPARP = 13 ;
CR LTG: LTG = 0-4, Type = LTGH, LDPARP = 60 ;
08/04/23 41
LTG
CREATION OF LTU
To create a module in a LTU, two variants are distinguished:
-With application (for DIU modules) -Without application (for everything else)
VALUES FOR PARAMETER :TYPE
D30 DIU30 for PCM30 systemU07 OCANEQ equipment (OCE:SPM, OCE:SPC, OCE:MUP)Y25 COUC for multiparty service (conference) in LTGM/N COUB for multiparty service (conference) in LTGGV15 MDTOG for CLIP for analog wired subscribersPMA PHMA for LTGM/N to connect an AN via V5.2 interfaceATE TEM:LE for testingATM ATE:TM for testing
08/04/23 42
LTG
CREATION OF LTU
VALUES FOR PARAMETER :TYPE
V01 8 code receivers for MFC:R2 signaling, TETPCPRT &TPCPRT ports
V02 8 code receivers for pushbutton dialing, TETPCPRT &TPCPRT ports
V03 8 code receivers for pushbutton dialing, TLFB & TESTNO
V04 ETEAE, TETPCPRT & TPCPRT ports
V08 TECONF ports
V09 8 code receivers for pushbutton dialing, TLF, RBS & TESTNO ports
V10 DIUPORTs, Alarm call ports
V11 TETPCPRT & TPCPRT ports
08/04/23 43
LTG
CREATION OF LTU
VALUES FOR PARAMETER : APPLICATIONCCSCCS Trunk with Common Channel Signaling No. 7
CASCAS Trunk with Channel associated signaling
CCSDLU PDC from DLU with CCS
EXTDLU PDC from DLU without CCS
CCSLDI PDC from Local DLU with CCS
EXTLDI PDC from Local DLU without CCS
CASRCA Channel Associated Signaling for recorded announcement machines
CCSPA Signaling for Primary Access (large PABX)
V52IF Connection of AN on v5.2 interface
08/04/23 44
LTGCREATION OF LTU
(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; CR LTU: LTG= 0-5, LTU = 3, Type = D30, APPLIC = EXTDLU;
(c) Creation of DIU 30 interface for trunks or DASCR LTU: LTG =0-3, LTU =0,Type=D30, APPLIC = CASRCA ; CR LTU: LTG =0-3, LTU =1,Type=D30, APPLIC = CASCAS ; CR LTU: LTG =0-3, LTU = 2,Type=D30, APPLIC = CCSCCS ;
08/04/23 45
LTGCREATION OF LTU
(d) Creation of LTU other than connecting PDCs
Creation of code receivers for DTMF dialing in LTUCR LTU : LTG= 0-1, LTU=4, Type=V03;Note: LTU 4 should be used for LTGG whereas LTU 6 should be used for LTGM or LTGN
Creation of Conference UnitCR LTU : LTG=0-7, LTU=3, Type=Y22 ;
Creation of LTU for ETEAECR LTU : LTG=0-6, LTU=3, Type=V04, MODVAR=1-0;
Creation of LTU for test conference (TECONF) portsCRLTU : LTG=0-1, LTU=6, Type=V08;
Creation of LTU for translation function (TLF), ring back service (RBS) and test numbers (TESTNO) ports CRLTU: LTG=0-1, LTU=5, Type=V09, MODVAR=0-0 & 1-0;
08/04/23 46
LTGCREATION OF LTU
Creation of LTU for test phone control (TPCPRT & TETPCPRT) ports of workstation
CRLTU : LTG=0-1, LTU=7, Type=V11; Creation of LTU for alarm call ports
CRLTU : LTG=0-3, LTU=4, Type=V10, MODVAR=0-3;
(d) Creation of LTU other than connecting PDC
08/04/23 47
LTGCREATION OF LTU
(e) Creation of LTU for further modules in LTGM/N
Creation of MDTOG located in LTU:S CR LTU: LTG =0-5 , LTU=5, TYPE=V15 ; Creation of LTU for PHMA CR LTU: LTG=0-2 , LTU=5, TYPE=PMA;
08/04/23 48
LTGCREATION OF CODE RECEIVERS IN SU
CRPC IN LTG 0-1, RMCTC/CRMR2 in LTG 0-3 & CRMR2 in LTG 0-8:
CR CRMOD: LTG = 0-1, CRMOD=0,TYPE= CRPC;
CR CRMOD: LTG= 0-1, CRMOD=1, TYPE= CRPC;
CR CRMOD: LTG = 0-3, CRMOD = 0, TYPE =RMCTC;
CR CRMOD: LTG = 0-3, CRMOD = 4, TYPE = CRMR2;
CR CRMOD: LTG = 0-3, CRMOD = 5, TYPE = CRMR2;
CR CRMOD: LTG = 0-8, CRMOD = 0, TYPE =CRMR2;
CR CRMOD: LTG = 0-8, CRMOD = 1, TYPE = CRMR2;
CR CRMOD: LTG = 0-8, CRMOD = 4, TYPE = CRMR2;
CR CRMOD: LTG = 0-8, CRMOD = 5, TYPE = CRMR2;
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LTGTo display existing LTGs/LTUs/CRs
DISP LTG : LTG = 0-x;LTG TYPE LDPARP0-1 LTGB 120-2 LTGB 520-3 LTGC 130-4 LTGH 60
DISP CRMOD : LTG = 0-1 ;
LTG CRMOD TYPE
0-1 0 CRPC
0-1 1 CRPC
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LTGTo display existing LTGs/LTUs/CRs
DISPLTU: LTG=0-1;
LTG LTU TYPE
APPLIC MOD VAR
0-1 0 D30 CCSLDI 0-1& 1-1& 2-1& 3-1& 4-1& 5-1& 6-1
0-1 1 D30 CCSDLU
0-1& 1-1& 2-1& 3-1& 4-1& 5-1& 6-1
0-1 2 D30 EXTLDI 0-1& 1-1& 2-1& 3-1& 4-1& 5-1& 6-1
0-1 3 V04 0-1& 1-0& 2-1& 3-1& 4-1& 5-1& 6-1
0-1 4 V09 0-1& 1-1& 2-1& 3-1& 4-1& 5-1& 6-1
0-1 5 V03 0-0& 1-0& 2-1& 3-1& 4-1& 5-1& 6-1
0-1 6 V08 0-1& 1-1& 2-1& 3-1& 4-1& 5-1& 6-1
0-1 7 V10 0-3& 1-1& 2-1& 3-1& 4-1& 5-1& 6-1
08/04/23 51
LTGLINE TRUNK GROUP
THANK YOU