UDT E1 PRI Example

Configure the UDT card first! - Set DIP switch S1 ON for E1 mode.
TTY into the card and TURN ON CRC (default is OFF), as CRC is usually required.
Always Force DownLoad the MSDL when enabling the circuit for the first time.

1PRI Loop configuration: (if not already defined). Common Equipment, change in LD 17, print in LD 22.

At the PRI2 and MG_CARD prompts, the card must be physically installed, otherwise there will be an error!

REQ   chg          Change existing data
TYPE  cequ         Common Equipment
CEQU  yes          Changes to Common Equipment

PRI2    xx         The PRI digital loop number
MG_CARD l s c      The physical card slot for the PRI loop in the media gateway (IPMG)

MODE  pri          Mode of operation
TMDI  no           Must be configured as NO

Print the CEQU in LD 22 to see which PRI loop is associated with which media gateway card.

Having defined the PRI loop, continue with circuit programming...

Note: If the Media Gateway already has a clock card, there is no need to fit another. Otherwise refer to UDT E1 T1 clocks.

2The D (DCH) channel: ADAN (Action Device and Number), build in LD 17, print in LD 22.

CTYP = MSDL - same as a NTBK51
MG_CARD = Loop Shelf Card - the physical UDT card location.
PORT = 1 - port must be set to 1

ADAN     DCH 211

  CTYP MSDL
  MG_CARD  000  0  01
  PORT 1
  DES  DCH211_PRI211
  USR  PRI
  DCHL 211
  OTBF 32
  PARM RS422  DTE
  DRAT 64KC
  CLOK EXT
  IFC  E403
  CNTY ETSI
    PINX_CUST 0
    ISDN_MCNT 300
  CLID OPT1
  PROG NCHG
  CO_TYPE  STD
  SIDE USR
  CNEG 1
  RLS  ID  **
  RCAP COLP
  MBGA NO
  OVLR NO
  OVLS NO
  T310 120
  INC_T306 6
  OUT_T306 6
  T200 3
  T203 10
  N200 3
  N201 260
  K    7

3The Route: Route Data Block, build in LD 16, print in LD 21

TYPE RDB
CUST 00
ROUT 1
DES  24
TKTP DID
M911_ANI  NO
M911_TONE  NO
NPID_TBL_NUM   0
SAT  NO
RCLS EXT
VTRK NO
DTRK YES
BRIP NO
DGTP PRI2
ISDN YES
    MODE PRA
    IFC  EURO
    CNTY ETSI
    SBN  NO
    PNI  00000
    NCNA NO
    NCRD NO
    ISAR NO
    CPFXS YES
    DAPC NO
    INTC NO
MBXR NO
MBXOT NPA
MBXT 0
DSEL VOD
PTYP DCO
CNDP UKWN
AUTO NO
DNIS NO
DCDR NO
ICOG IAO
RANX NO
SRCH RRB
TRMB YES
STEP
ACOD 48001
TCPP NO
PII NO
AUXP NO
TARG 01 02 03 04 06 07 08 09
CLEN 1
BILN NO
OABS
INST
IDC  NO
DCNO 0 *
NDNO 0
DEXT NO
ICIS YES
TIMR ICF  512
     OGF  512
     EOD  13952
     NRD  10112
     DDL  70
     ODT  4096
     RGV  640
     FLH  510
     GRD  896
     SFB  3
     NBS  2048
     NBL  4096
     IENB  5
     VSS  0
     VGD  6
DRNG NO
CDR  YES
INC  YES
LAST NO
TTA  NO
QREC NO
OAL  YES
AIA  NO
OAN  YES
OPD  NO
CDRX NO
NATL YES
VRAT NO
MUS  YES
MRT  21
MR   NO
EQAR NO
FRL  0 0
FRL  1 0
FRL  2 0
FRL  3 0
FRL  4 0
FRL  5 0
FRL  6 0
FRL  7 0
OHQ  NO
OHQT 00
TTBL 0
ATAN NO
PLEV 2
MCTS NO
ALRM NO
ART  0
SGRP 0
ARDN NO
CTBL 0
AACR NO

4Trunks: Trunk Data Block, build in LD 14, print in LD 20

DES  PRI_DID_CKT
TN   211 01  VIRTUAL
TYPE DID
CDEN SD
CUST 0
TRK  PRI2
PDCA 1
PCML A
NCOS 5
RTMB 1 1
B-CHANNEL SIGNALING
NITE
AST  NO
IAPG 0
CLS  UNR DTN CND ECD WTA LPR APN THFD SPCD
     P10 VNL
TKID
AACR NO

Enabling the PRI

In LD 96, enable the MSDL and force download; enable the DCH and force download (first time only).
Then goto LD 60 and enable the loop, which also automatically enables the associated D channel.

MSDL commands:

LD 96	Description
DIS MSDL x	Disable device MSDL x
ENL MSDL x (FDL)	Enable MSDL x, force download software
SLFT MSDL x	Reset and invoke self tests for MSDL x
STAT MSDL (x)	Get status of one or all MSDL's

D-channel commands:

LD 96	Description
DIS DCH x	Disable DCH x
ENL AUTO DCH x	Enable automatic recovery for DCH x
ENL DCH x (FDL)	Enable DCH x and attempt to establish the link, force MSDL download
STAT DCH (x)	Get status of one or all D-channels

PRI loop commands:

LD 60	Description
DISL loop	Disable network and DTI/PRI cards of loop
ENLL loop	Enable network and DTI/PRI cards of loop
STAT loop	Get status of DTI/PRI loop
RCNT loop	Reset alarm counter of DTI/PRI loop (LCNT to list alarm counters)

Notes:

Use RST MSDL x or SLFT MSDL x to reset a troublesome device!
The FDL (force download) dots should stream smoothly with no errors.

CRC and Companding:

If when you enable the circuit, the D channel won't establish (eg, the PRI Card is green but with no activity), check if CRC is on.
CRC is enabled in LD 73. At the MFF prompt, enter CRC (default: AFF). Note that this must also be set on the UDT card itself:

REQ  chg
TYPE pri2       2.0 Mb PRI
FEAT lpti       Loop timers
LOOP 200        Loop number of PRI card
MFF  crc        CRC multiframe mode, or AFF alternate mode (default)
ACRC

If the circuit establishes, but sounds terrible, try changing the trunk Pulse Code Modulation Law: PCML = MU or A.
MU-law (μ-law) is used in North America and Japan, A-law is used in Europe and the rest of the world.