Mike's PBX Cookbook

E1 PRI PBX tie-link

How to Configure a PRI tie-link between two PBX's. There are applications where this is useful, for example when there's no network path between sites. Combining DID and TIE trunks on the same PRI solves many of the problems associated with this kind of setup.

Significant prompts (Rel. 7.5) are indicated, terminal input is bold, notes are in blue.


1Add a PRI Loop: change in LD 17, print in LD 22.

LD 17 - Add a PRI2 loop

REQ   chg      
TYPE  cequ          change common Equipment
:
PRI2    200         2Mb/s PRI loop number
MG_CARD 0 0 1       physical card slot
:
LD 73 - Add a PRI2 clock (if required)

REQ  chg
TYPE pri2
FEAT syti
MGCLK 0 0 1         physical card slot
PREF 1
SREF
MGCLK

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


2D-channels: nominate one PBX side NET, the other USR.

LD 17 -  DCH on PBX A (NET side)

REQ  chg
TYPE adan
ADAN new dch 200
CTYP msdl
MG_CARD 0 0 1
PORT 1              always port 1 (MG card)
DES  TIE_2_B
USR  pri
IFC  sl1            Meridian SL-1 protocol
DCHL 200
PRI2
OTBF
SIDE net            node type: NET
RLS  25
RCAP nd2 nwi tat    name display, anti-trombon
RCAP
OVLR
OVLS
MBGA
NASA yes            network attendant
TIMR
LAPD
LD 17 -  DCH on PBX B (USR side)

REQ  chg
TYPE adan
ADAN new dch 200
CTYP msdl
MG_CARD 0 0 1
PORT 1
DES  TIE_2_A
USR  pri
IFC  sl1
DCHL 200
PRI2
OTBF
SIDE usr            node type: USR
RLS  25
RCAP nd2 nwi tat
RCAP
OVLR
OVLS
MBGA
NASA yes
TIMR
LAPD


3Routes: build two routes, one for the DID trunks, one for the TIE trunks.

LD 16 - DID Route

REQ  new
TYPE rdb
CUST 0
ROUT 18             route number
DES  DID_2_A
TKTP did            trunk type = DID
M911_ANI
SAT
RCLS
DTRK yes            digital trunk route
DGTP pri2           type = 2.0 Mb/s PRI
ISDN YES
MODE pra            Primary Rate Access
IFC  sl1            Meridian SL-1 protocol
PNI  1
NCNA yes            Network Calling Name
NCRD yes            Network Call Redirection
TRO  yes            Trunk Route Optimization
ISAR
DAPC
MBXR
MBXOT
MBXT
DSEL
PTYP
CNDP
AUTO
DNIS
DCDR
IANI
ICOG iao            in and outbound
RANX
SRCH
TRMB
STEP
ACOD 580018         direct access code
CLEN
TCPP
PII
AUXP
TARG 0              not blocked
BILN
SGRP
OABS
INST
CNTL
DRNG
CDR
VRAT
MUS
EQAR
OHQ
OHQT
TTBL
ATAN
PLEV
MCTS
ALRM
ARDN
CTBL
LD 16 - TIE Route

REQ  new
TYPE rdb
CUST 0
ROUT 19
DES  TIE_2_A
TKTP tie            trunk type = TIE
M911P
ESN
CNVT
SAT
RCLS
VTRK
DTRK yes
BRIP
DGTP pri2
ISDN YES
MODE pra
IFC  sl1
PNI  1
NCNA yes
NCRD yes
TRO  yes
CTYP
INAC
ISAR
DAPC
MBXR
MBXOT
MBXT
DSEL
PTYP
CNDP
AUTO
DNIS
DCDR
IANI
ICOG iao
SRCH
TRMB
STEP
ACOD 580019
CLEN
TCPP
PII
AUXP
TARG 0
BILN
SGRP
OABS
INST
ANTK
SIGO
CNTL
DRNG
CDR
VRAT
MUS
OHQ
OHQT
CBQ
AUTH
TTBL
ATAN
PLEV
ALRM
ARDN
CTBL

4Trunks: build 15 DID, and 15 TIE trunks.

LD 14 - DID Trunks

REQ  new 15
TYPE did            trunk type = DID
TN  200 1
DES  DID_2_A
PDCA
PCML a              companding
CUST 0
NCOS 7
RTMB 18 1           DID route, member

B-CHANNEL SIGNALING
INC
NITE
AST
CLS  unr dtn
TKID

NEW TRK    TN  200 01     RT  18     MB  1
:
:
LD 14 - TIE Trunks

REQ  new 15
TYPE tie            trunk type = TIE
TN  200 16
DES  TIE_2_A
PDCA
PCML a
CUST 0
NCOS 7
RTMB 19 1           TIE route, member

B-CHANNEL SIGNALING
INC
MNDN
TGAR 0
AST
CLS  unr dtn
TKID

NEW TRK    TN  200 16     RT  19     MB  1
:

5Route List Block & Steering codes: First choice DID, second choice TIE.

- Incoming PTT DID calls will not connect to DID trunks, and will reroute to the TIE trunks. Caller ID is preserved.
LD 86 - Route List Block

REQ  new
CUST 0
FEAT rlb
RLI  18
ENTR 0
LTER 
ROUT 18             first choice use DID route
TOD  
CNV  
EXP  
FRL  
DMI  
FCI  
FSNI 
SBOC rra            reroute all
COPT 2              alternate routing option
IDBB
IOHQ 
OHQ  
CBQ  
ENTR 1
LTER 
ROUT 19             on reroute use TIE route
TOD  
CNV  
EXP  
FRL  
DMI  
FCI  
FSNI 
SBOC nrr            no reroute for this entry
IDBB
IOHQ 
OHQ  
CBQ  
ENTR 
ISET 2              two entries for this RLI
NALT 
MFRL 
OVLL 

LD 87 - PBX A (200X)

REQ  new
CUST 0
FEAT cdp
TYPE dsc
DSC
DSC  21
FLEN 4              calls to 21XX
DSP
RLI  18             are sent to RLI 18
NPA
NXX
LD 87 - PBX B (210X)

REQ  new
CUST 0
FEAT cdp
TYPE dsc
DSC
DSC  20
FLEN 4              calls to 20XX
DSP
RLI  18             are sent to RLI 18
NPA
NXX
LD 73 - Enable CRC

REQ  chg
TYPE pri2          2.0 Mb PRI
FEAT lpti          loop timers
LOOP 200
MFF  crc           set CRC mode for loop
ACRC

6Bring into service:

>ld 48
LNK000
.enl msdl 0 0 1 fdl

OVL021 IDLE
..........................................................................................
DOWNLOADING DCH
REASON: FORCED
..........................................................................................
OK
.****

>ld 96
.stat dch
DCH 200 : SDCH       RST         AUTO         DES : TIE2_A
.
DCH054 DCH: 200 EST CONFIRM TIME: 14:57:38   7/02/2017
****
OVL000
>ld 60
DTI000
.enl cc 0 0
OK
.enll 200

OK
.stat 200

PRI2 LOOP 200 - ENBL
REF CLK: ENBL
TRACKING
SERVICE RESTORE: YES
ALARM STATUS: ACCEPTABLE
CH 01 - IDLE DID   VOD  *           CH 02 - IDLE DID   VOD  *
CH 03 - IDLE DID   VOD  *           CH 04 - IDLE DID   VOD  *
CH 05 - IDLE DID   VOD  *           CH 06 - IDLE DID   VOD  *
CH 07 - IDLE DID   VOD  *           CH 08 - IDLE DID   VOD  *
CH 09 - IDLE DID   VOD  *           CH 10 - IDLE DID   VOD  *
CH 11 - IDLE DID   VOD  *           CH 12 - IDLE DID   VOD  *
CH 13 - IDLE DID   VOD  *           CH 14 - IDLE DID   VOD  *
CH 15 - IDLE DID   VOD  *           CH 16 - IDLE TIE   VOD  *
CH 17 - IDLE TIE   VOD  *           CH 18 - IDLE TIE   VOD  *
CH 19 - IDLE TIE   VOD  *           CH 20 - IDLE TIE   VOD  *
CH 21 - IDLE TIE   VOD  *           CH 22 - IDLE TIE   VOD  *
CH 23 - IDLE TIE   VOD  *           CH 24 - IDLE TIE   VOD  *
CH 25 - IDLE TIE   VOD  *           CH 26 - IDLE TIE   VOD  *
CH 27 - IDLE TIE   VOD  *           CH 28 - IDLE TIE   VOD  *
CH 29 - IDLE TIE   VOD  *           CH 30 - IDLE TIE   VOD  *
CH 31 - DCH 200
.ssck 0 0
ENBL
CLOCK ACTIVE
CLOCK CONTROLLER -  LOCKED TO SLOT 1
PREF - 1
SREF -
AUTO SWREF CLK - ENBL
.
Home » Meridian » Install » E1pbxtie