UDT E1 PRI Example
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 dowload) 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.