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Data Creation in Local Exchange (LE)

There are basically different type of technologies used as local exchange. An RAX has been tested successfully with technologies like EWSD,OCB,5ESS and C-DOT. To facilitate the BSNL staff for connecting AN-RAX with above mentioned LEs, following are the commands and their parameters used in corresponding LE.

• C-DOT AS LOCAL EXCHANGE: Procedure for equipping VU and creating AN-Interface at C-DOT MAX If the VU has not been equipped then first equip VU by following process. The software version should be either 2_2_1_3 or 2_2_1_4 (all patches). It is not supported in the 2_1_1_1 link.
  • Equip the VU frame by using the command EQUIP-FRAME with the following parameters;

MOD-NO = BM number

RACK-NO =

FRAME NO = Depending on the frame to be equipped.

TIC-ID = TIC ID of the frame to be equipped.

FRAME TYPE = VU

• Equip PHCs in the slots in which SHM cards are Physically Present.
  Use the command EQUIP-TRML-CARD with the following parameters;

HW-TYP = PHC

VER –NO = 1

CARD-SLOT = BM-rack-frame-slot,

where slot=7/8/9/10 and 17/18/19/20

Depending on the slot position of phc

Note: The command will be rejected if VU is not already equipped in the switch.

• Initialize VU
  Use the command PUT-SWU-INS with the following parameters;

MOD-NO = BM Number in which VU is equipped

UNIT –ID =TIC ID of the VU

With the corresponding TIC becoming INS-ACT, the VU gets the path to the APC, critical alarm will now be raised for VU on the ADP. After successful code and patch loading VU comes up and unit status of VPC, VMU-0, VMU-1 is shown as IN SERVICE and VPC-1 as INS-SBY in DISPL-SYS-ALL command of the BM

• Equip DTS card in DTU frame by the command equip-trml-card, using following parameters

HW-TYP = DTK-CCS

VER-NO = 1

CARD-SLOT = BM-rack-frame-slot, depending on the slot

where a card is to be Equipped.

• Now Create Access Network Interface (AI ) by using command cre-ai with following parameters;

AI-NUM * = AN Interface Number (1-100)

AI-NAME = Interface Name

AI-TYP = V5.2

VAR-ID * = (Maximum value 127)

AI-CTG = 1

ST-L3ADR = 0

AI-LNK = (PCM-ID1)-0 & (PCM-ID2)-1

PRI-LNK = 0

SEC-LNK = 1

PROT-INF = 4 (ACCL-PORT-ALIGN)

Note :-

* The value should be same as defined at AN side ST-L3ADR preferred

to be defined as 0

• Creation of Subscriber is to be done by using command cre-sub using following parameters:

DIRNO :

[TEN] : NONE

[AISUB-ID] * : (AI-NUM)-(L3ADR ) eg : 1-0

[CHNL-NO] : NONE

[LIN-TYP] : ORD-LIN

[INS-TYP] : DECAD

[SUB-PRI] : 1

[CAL-MOD] : NO-INT

[ORG-REG] : NO-ORG

[TRM-REG] : NO-TRM

[MTR-CLS] : NRM-MTR

[DET-BLG] : ORD-BLG

[ACC-BAR] : INCMNG_NOT_BAR-OG_UPTO_LCLALL_

BS

[LIN-CAT] : 1

[SUB-CTG] : 1

[CAB-ID] : 1-1-1

[OPR-ACC] :

[BS] : BS12

[B-SELECT] : SEQ

[CHNL-BS] : 1-ALL_BS

[CALL-BS] : 1-ALL_BS

[ACS-OPT] : NRML

Note: All the parameters are to be defined the same as in case of ordinary

subscriber.

accept AI-SUBID

TEN= None

• The status of AN subscribers, AI channels and PHC terminals can be seen by using DISPL-TRM-STATUS command by using the following

parameters.

[STAT-TRM] : ALL

TML-TYP :

[TEN] :

[DIRNO] :

Note: Ten value is to be given when TML-TYP = AICHNL/PHC and DIRNO

is to be given for TML-TYP = ANSUB.

• EWSD AS LOCAL EXCHANGE
  Testing of AN-RAX done with EWSD as LE at Karol Bagh exchange, New Delhi. The following are the commands and their details that are used in EWSD exchange. The patch used for V11 version is CJ144 and version V13 is CJ145.
  • CREATION OF INTERFACE :

>CR V5IF

V5IF = interface number

V5IFID = interface ID

IFTYPE = V52

PROVAR = this should be same as variant ID at AN side

V5PORTS = total number of ports

• CREATION OF V5 LINKS

>CRV5LINK

V5IF = interface number

V5LINK =0-13-0 ( first zero is sort of BM no. 13 is LTG no., and last zero

is PCM no.)

V5LINKID =it is a logical number given to the PCM (say 0)

This command has to be given for standby link also. It is to be noted that the standby link cannot be of the same LTG (13 in this case). In one LTG maximum of four PCM can be configured.

• MODIFICATION OF TIME SLOT

>MODV5TS

V5IF = interface number

V5LINKID =0

V5TS =16

USAG =CCH

PROTGRP =1

(PROTECTION GROUP=2 is used when TS15 Is used as a communication

channel.)

this command is given for both the links

• CREATION OF V5 COMMUNICATION CHANNEL

>CRV5CMCHAN

V5IF = interface number

V5LINKID =0 (only primary link)

V5TS =16

V5CHANID =0

• CREATION OF V5 COMMUNICATION PATH

>CRV5CMPATH

V5IF = interface number

V5CHANID =0

V5PATHID =0

PATHTYPE =CNT

Now this command is given four times for all the protocols as the pathtype

That is V5PATHID=1 : PATHTYPE =LCNT

V5PATHID=2 : PATHTYPE =BCC

V5PATHID=3 : PATHTYPE =PSTN

This means that all the protocol of V5 will travel on TS 16 of V5CHANID 0,

physically on 0-13-0.

• PARAMETER TO DISABLE CRC:

>ENTER PDCCHR

The parameter FORMAT in this command should be set as STDFRM to

disable the CRC.

• CONFIGURATION OF V5 LINK
  After the creation of V5link, its status has to be made active by this command.

>CONFV5LINK

V5IF =interface number

V5LINKID =0

STATUS =MBL, ACT;

That means status is first made MBL (like OOS) and then ACT. This

the command is run for both the link, forV5LINKID=1 also.

• DISPLAY/STATUS COMMANDS
  DISPV5IF = displays the data created for interface

DISPV5PORTS = displays the data created for the subscriber

STATLTG = status of the line trunk group is shown

STATV5PORT = status of the subscriber is shown

DISPV5TS =data created for v5 time slot

STATV5LINK = status of v5 link is given (ACT, MBL, NAC, UNA)

EWSD STATUS EQUIVALENT CDOT STATUS

ACT INS-NRM

MBL OOS-OPR

NAC OOS-SUS

UNA OOS-SE

• CREATION OF AN SUBSCRIBER

>CRSUB

LAC = local area code

DN = directory number

EQN* = equipment no.(10-0-0-1)

COSDAT = V5ACCID-1

CAT = category

LNATT

ORIG1

ORIG2

The fields of equipment no (EQN):

First field = 10 (V5IFID)

Second field =0 (fixed)

Third field = two bits

Fourth field = two bits (0-99)

If the fourth bit is 0 then start L3ADDR at AN side will be 0.the range of fourth bit goes up to 99.if L3ADDR is200 then EQN no. will be 10-0-2-00. if L3ADDR is 489 then its EQN no. will be 10-0-4-89. Also, note that the second field of parameter COSDAT should be the same as L3ADDR of equipment no. if EQN no is 10-0-5-43 then its COSDAT will be V5ACCID-543. Also, note that whenever a subscriber is created its status goes to PLA. This status has to be changed by the following command.

CONFV5PORT

By this command, the status of the subscriber is changed to MBL and then to ACT. Check the status of the port which is made active by command STATV5PORT. Its status should be DIDLE.

• 5ESS AS LOCAL EXCHANGE
  The testing of AN RAX is done with 5ESS having software version 13.1 and patch S48.
  • CREATION OF AN INTERFACE
    Form 4.5 is used for the creation of V5.2 interface. The command used to display the parameters of the interface is “ rddb-v5itf:v5identifier=100: “ here 100 is set as interface ID in AN-RAX.

V5 IDENTIFIER: 00100

V5 EXTERNAL IDENTIFIER: 100

V5 VERSION : V5.2

V5 PROFILE NAME : CDOT-AN

V5 ACTIVE VARIANT : 0

V5 NEXT VARIANT : 0

PSIG LCC : 0

BC USAGE : 00000000000000000000000000000000000000000

L1 RECOVERY MODE : DELAYED

REMARKS : CDOT-AN

NEW SUB PROV CADN : Y

MAXIMUM ALRM LEVEL : CRITICAL

LINKS

HOST FACILITY ID TYP C1LSCN C1LCC C2LCN C2LCC C3LCN C3LCC

1. D 011000190 0 P 000120 0 ——– —- —— ——
2. D 011000191 1 S 000124 —– —— —– —— —–

NOTE :

V5 IDENTIFIER parameter set above should be the same as the interface ID set at AN. V5 ACTIVE VARIANT and V5 NEXT VARIANT should be the same as variant ID at AN side. FACILITY = 011000190, here 11 is SM number, 0 is DLTU, 19 is DFY, 0 is facility number. The ID set as 0 and 1 for primary (P) and secondary (S) respectively, should be the same as logical ID set at AN side for the primary and secondary link. In the above example ID for the primary link is 0 and for the secondry link is 1.

• CREATION OF V5 LINK
  Form 9.2 is used for data creation of V5 links. The name of this form is EPDLT, parameters for the same are as follows :

SM : 11

DLTU : 0

DFY : 19

FAC IND : 3

TYPE : V5

FACO MODE : CCS

Note: CRC should be deactivated at the LE side. It can be achieved by Modifying the parameters “ESCM=CMFAS” in form 9.10. Make sure that this Parameter should not be CMCRC.

• MAINTANANCE COMMANDS FOR V5 LINKS

♦To check the status of links :

< 1124,0,11

here 0 is the dltu number and 11 is the SM number.

♦To check the links used in V5 interface:

<oplst-v5lk:v5id=100;

LINK ID LINKTYPE FACILITY STATUS

0 PRIM FAS=11-0-19-0 IS

Chapter 9.

122 C-DOT AN-RAX

1 SEC FAS=11-0-19-1 IS

♦To check the status of interface:

<lst-v5cc:v5id=100;

LINKID CC ACTIVE/STANDBY LCC TIME SLOT STATUS

0 C1 STANDBY DEN=11-0-19-16 OPERATIONAL

1 C1 ACTIVE 0 DEN=11-0-19-48 OPERATIONAL

♦To make the link out of service:

<rmv-fac:11-0-19-0;

♦To make the link inservice:

<rst-fac:11-0-19-0;

♦To check the status of interface:

<opst-v5if:id=100;

♦To check the datacreation for subscriber;

• CREATION OF AN SUBSCRIBER

<rddb-sbldn:dirnr=7911133

DIR NR : 7911133

QUANTITY :……….

LN EQ NR : V 00100P00000

(In case of 5ESS start L3 Addr = 1)

Here, in LN EQ NR ,100 is interface ID and 00000 is the L3 ADDR. The LN EQ NR for next L3 ADDR will be V 00100P00001. All other parametrs of this command will be as per LE requirement. To check the status of AN subscriber :

• MAINTENANCE COMMANDS FOR AN SUBSCRIBER

<opst-sub:7911133;

The normal status is “ IS AUTO “

To make the subscriber out of service :

<rmv-sub:7911133;

To make the subscriber in service:

<rst-sub:7911133;

• OCB AS LOCAL EXCHANGE
  The testing of AN interface has been done with OCB exchange having software version R23 and R24.
  • V52 UR Creation

Command: V52CR

Parameters: AFUR, AF, ID, VERS, VAR, TYPM, SEEF

♦AFUR – Functional address for V52 connection unit (internal logical

identification) [used ‘200’ Jabalpur]

♦AF – Functional address of AN (ANAi/ANBi)

♦*ID – Interface identifier between 0 & 16777215) [INTERFACE ID]

♦VERS: AN version (0 to 255). This is to adapt the management of a

V5.2 interface, in the OCB283, to the AN network. [Recommended

value for C-DOT is ‘4’, default is ‘0’]

♦*VAR: VAR: Interface variant, defined jointly, which characterizes the

interface configuration. (0 to 127, Default is 0). [VARIENT ID.]

♦TYPM: Type (capacity) of AN.

♦TYPM=’V52AN01′- 1024 subscribers [FOR AN-RAX]

♦TYPM=’V52AN02′ – 4096 subscribers

♦TYPM=’V52AN03′ – 8192 subscribers

SEEF: Call completion ratio threshold for alarm generation [PUT ’25’]

AT IDGAH OCB-283 VER R24

AFUR=052; AF=ANA01; TYPM=V52AN01; ID=3; VAR=0; VERS=4; SEEF25

• PCM Creation

Command: MICCR

Parameters: AFLR, AMET, ID, TYMIC

♦AFLR: Functional address in the form UR-PCM.

♦AMET: Physical address of the PCM in the SMT

♦TYMIC: MIC2G (Default value) for SMT2G.

AT IDGAH OCB-283 VER R24

FOR PCM’0′ AFLR-52-0; AMET=2-5-3; ID=0; TYMIC=MIC2G

FOR PCM’1′ AFLR=52-1; AMET=1-18-1; ID=1; TYMIC=MIC2G

Note: The CRC should be deactivated. This can be checked by displaying the

parameter correction “CRC” through command “Q2MCMIL”.

AFLR = <>

CRC = NACT

• Creation of Communication Channel

Command: CCHCR

Parameters: AFCC, AFVT, GP, ACT.

♦*AFCC: Communication Channel number in the form of UR no-CC no.

♦*AFVT: UR no.-LR no.-TS no. (Value=say, 100-0-16)

♦*GP: Protection group number. (1 or 2)

♦*ACT: Type of CC (YES or NO)

AT IDGAH OCB-283 VER R24

FOR PCM’0′ ACT=YES; AFCC=52-0; AFVT=52-0-16; GP=1

FOR PCM’1′ ACT=NO; AFCC=52-1; AFVT=52-1-16; GP=1

• Creation of Communication Path

Command: CPHCR

Parameters: CP, AFCC, TYCP

♦*CP: Communication path number. (0 and 127)

♦*AFCC: Number of the associated CC.

♦TYCP: Type of CP. (PSTN for analog lines and ISDNS for digital lines.)

(UR can be made in service by TELEMO at the end of this creation).

AT IDGAH OCB-283 VER R24

AFCC=52-0;CP=0; TYCP=PSTN

• Creation of Subscriber

Command: ABOCR

Parameters: ND, NE, TY, CAT, NAP, CP

♦*ND: Directory Number

♦NE: Equipment no. in the form of UR-REG-BRO.

♦TY: Type of line. value V52 is mandatory.

♦CAT: Category of the line.

♦*NAP: Number of access port defined jointly in the LE and the AN.

The value is in the range from 0 to 8175 for ISDN lines and 0 to 32767

for analog lines.

♦*CP: CP to which the line is attached. (digital accesses only).

AT IDGAH OCB-283 VER R24

ND=3592000; TY=V52+KLA+SR1; CAT=IAI; AFUR=52; NAP=0

ND=3592001; TY=V52+KLA+SR1; CAT=IAI; AFUR=52; NAP=1

126 C-DOT AN-RAX

 

Appendix – A

Glossary

AN : Access Network

CAS : Channel Associated Signalling

CCS : Common Channel Signalling

CEPT : European Conference of Posts and Telecommunications

Administration

CP : Call Processing

DLE : Data Link Entity

DMA : Direct Memory Access

DTMF : Dual Tone Multi-Frequency

FSM : Finite State Machine

HDLC : High level Data Link Control

LE : Local Exchange

LTE : Line Termination Equipment

MAX : Main Automatic Exchange

ARC : AN-RAX Controller Card

ARI : AN-RAX Interface Card

MDF : Main Distribution Frame

LCC/CCM/

CCB

: Subscriber Line Card

MMI : Man Machine Interface

PSU : Power Supply Unit

RTC : RAX Terminal Tester Card

PCM : Pulse Code Modulation

POTS : Plain Old Telephone Services

PSTN : Public Switched Telephone Network

AN-RAX : Access Network – RAX

RSU : Remote Switch Unit

V5 : Standard interface between LE and AN