Section 5.28.5.1. Heterogeneous Network

5.28.5.1. Heterogeneous Network

The heterogeneous network consists of a total of four closed-number nodes (that is, an area) with a node that does not support route optimization (1-89-400).

Route a: Standard route after call transfer Route b: Alternative route after call transfer

Figure 63. Heterogeneous network with Route Optimization

Subscriber A in the public exchange calls user B in the ROPT-compliant network. The later makes a consultation call to user C and transfers the call to C.

If the prerequisites for route optimization are satisfied (that is, route permitted for route optimization and circuit with parameter ROPT), the standard route (route a) is switched to the alternative route (route b) at the moment of call transfer.

To ensure smooth switchover of the call, so-called "broadcasting" is performed in the transition phases: the "old" and "new" circuits receive the user's call data at the same time.

IMPORTANT:

Only commands important for the Route Optimization feature are listed. Information on adding boards, trunk groups and CO accesses is not shown here because no ROPT-specific settings are necessary. Only the ROPT-specific parameters should be specified as a change in the AMO TDCSU.

Commands for PNNO 2-89-100:

Assign a home physical node code and area code in the AMO WABE as follows:
```
ADD-WABE:CD=828901&89,DAR=OWNNODE;
```
Assign remote node codes on the TIE DAR in the AMO WABE as follows:
```
ADD-WABE:CD=828902&828903,DAR=TIE; 
```
Set a home physical node number and node code for route optimization as follows:
```
CHA-ZAND:TYPE=ALLDATA,PNNO=2-89-100,PNODECD=828901; 
```
Only configure first path for route optimization, (ROUTOPTP=NO is default):
```
CHANGE-ZAND:TYPE=ALLDATA,ROUTOPTP=YES; 
```
Allow a route optimization request for all physical nodes:
```
CHANGE-ZAND:TYPE=ALLDATA,ROUTOPTD=NO;
```
Define class of trunk for lines to adjoining nodes with route optimization capability:
```
ADD-COT:COTNO=0,PAR=ROPT;
```
Define class of trunk for line:
```
ADD-COT:COTNO=20,PAR=LWNC;
```
You can define the class of trunk for the line to the CO without the COT parameter ROPT.

Assign circuits to adjoining nodes with route optimization capability as follows:

CHANGE-TDCSU:PEN=1-2-25-0,COTNO=0,PROTVAR=ECMA2,SEGMENT=8,DEV=S2CONN;

Assign circuit to node (without NODENO transmission):

CHANGE-TDCSU:PEN=1-2-25-1,COTNO=20,PROTVAR=CORNV33,
SEGMENT=1,DEV=S2CONN,SNNO=1-89-400;

Assign LCR routes for route optimization with closed numbering as follows:
From physical node 2-89-100 to physical node 2-89-200:
```
ADD-RICHT:MODE=LRTENEW,LRTE=902,NAME="ROUTEOPT",
TGRP=20,DNNO=1-89-200,ROUTOPT=YES,INFO="ROUTEOPT TO 200",
PDNNO=2-89-200;
```
Define an outdial rule with the AMO LODR:
```
ADD-LODR:ODR=1,CMD=ECHO,FIELD=1;

ADD-LODR:ODR=1,CMD=END;

ADD-LODR:ODR=1,INFO="CLOSED NUMBERING ROPT";
```
Define a routing element with the AMO LDAT:
```
ADD-LDAT:LROUTE=902,LVAL=1,TGRP=20,ODR=1,LAUTH=1;
```
Add a digit pattern with the AMO LDPLN:
```
ADD-LDPLN:LDP=828902-T,LROUTE=902,LAUTH=1;
```

From physical node 2-89-100 to physical node 2-89-300:

ADD-RICHT:MODE=LRTENEW,LRTE=903,NAME="ROUTEOPT",
TGRP=30,DNNO=1-89-300,ROUTOPT=YES,INFO="ROUTEOPT TO 300",
PDNNO=2-89-300;

Define an outdial rule with the AMO LODR:

ADD-LODR:ODR=1,CMD=ECHO,FIELD=1;

ADD-LODR:ODR=1,CMD=END;

ADD-LODR:ODR=1,INFO="CLOSED NUMBERING ROPT";

Define a routing element with the AMO LDAT:

ADD-LDAT:LROUTE=903,LVAL=1,TGRP=30,ODR=1,LAUTH=1;

Add a digit pattern with the AMO LDPLN:

ADD-LDPLN:LDP=828903-T,LROUTE=903,LAUTH=1;

Assign routes for closed numbering, ROUTOPT=NO is default:

ADD-RICHT:MODE=CD,LRTE=400,CD=40,CPS=0,SVC=ALL,
NAME="TO NODE 400  ",TGRP1=40,DESTNO=40,DNNO=1-89-400,
ROUTOPT=NO,PDNNO=1-89-400;

Commands for PNNO 2-89-200:

Assign own node code and area code in the AMO WABE:
```
ADD-WABE:CD=828902&89,DAR=OWNNODE; 
```
Assign remote node codes in DPLN (DAR TIE):
```
ADD-WABE:CD=828901&828903,DAR=TIE; 
```
Assign user B locally in dial plan:
```
ADD-WABE:CD=7200,DAR=STN,DESTNO=0; 
```
Set a home physical node number and node code for route optimization as follows:
```
CHA-ZAND:TYPE=ALLDATA,PNNO=2-89-200,PNODECD=828902;
```
Only configure first path for route optimization, (ROUTOPTP=NO is default):
```
CHANGE-ZAND:TYPE=ALLDATA,ROUTOPTP=YES; 
```
Allow a route optimization request for all physical nodes:
```
CHANGE-ZAND:TYPE=ALLDATA,ROUTOPTD=NO;
```
Define class of trunk for lines to adjoining nodes with ROPT capability:
```
ADD-COT:COTNO=0,PAR=ROPT; 
```

Assign circuits to adjoining nodes with ROPT capability as follows:

CHANGE-TDCSU:PEN=1-2-79-0,COTNO=0,PROTVAR=ECMA2,

SEGMENT=8,DEV=S2CONN;

Assign LCR routes for route optimization with closed numbering as follows:

From physical node 2-89-200 to physical node 2-89-100:

ADD-RICHT:MODE=LRTENEW,LRTE=901,NAME="ROUTEOPT",
TGRP=10,DNNO=1-89-100,ROUTOPT=YES,INFO="ROUTEOPT TO 100",
PDNNO=2-89-100;

Define an outdial rule with the AMO LODR:

ADD-LODR:ODR=1,CMD=ECHO,FIELD=1;

ADD-LODR:ODR=1,CMD=END;

ADD-LODR:ODR=1,INFO="CLOSED NUMBERING ROPT";

Define a routing element with the AMO LDAT:

ADD-LDAT:LROUTE=901,LVAL=1,TGRP=10,ODR=1,LAUTH=1;

Add a digit pattern with the AMO LDPLN:

ADD-LDPLN:LDP=828901-T,LROUTE=901,LAUTH=1;

From physical node 2-89-200 to physical node 2-89-300:

ADD-RICHT:MODE=LRTENEW,LRTE=903,NAME="ROUTEOPT",
TGRP=30,DNNO=1-89-300,ROUTOPT=YES,INFO="ROUTEOPT TO 300",
PDNNO=2-89-300;

Define an outdial rule with the AMO LODR:

ADD-LODR:ODR=1,CMD=ECHO,FIELD=1;

ADD-LODR:ODR=1,CMD=END;

ADD-LODR:ODR=1,INFO="CLOSED NUMBERING ROPT";

Define a routing element with the AMO LDAT:

ADD-LDAT:LROUTE=903,LVAL=1,TGRP=30,ODR=1,LAUTH=1;

Add a digit pattern with the AMO LDPLN:

ADD-LDPLN:LDP=828903-T,LROUTE=903,LAUTH=1;

Commands for PNNO 2-89-300:

Assign own node code and area code in the AMO WABE:
```
ADD-WABE:CD=828903&89,DAR=OWNNODE; 
```
Assign remote node codes in DPLN (DAR TIE):
```
ADD-WABE:CD=828901&828902,DAR=TIE; 
```
Assign user C locally in dial plan:
```
ADD-WABE:CD=7300,DAR=STN,DESTNO=0; 
```
Set a home physical node number and node code for route optimization as follows:
```
CHA-ZAND:TYPE=ALLDATA,PNNO=2-89-300,PNODECD=828903;
```
Only configure first path for route optimization, (ROUTOPTP=NO is default):
```
CHANGE-ZAND:TYPE=ALLDATA,ROUTOPTP=YES; 
```
Allow a route optimization request for all physical nodes:
```
CHANGE-ZAND:TYPE=ALLDATA,ROUTOPTD=NO;
```
Define class of trunk for lines to adjoining nodes with ROPT capability:
```
ADD-COT:COTNO=0,PAR=ROPT; 
```

Assign circuits to adjoining nodes with ROPT capability as follows:

CHANGE-TDCSU:PEN=1-2-79-0,COTNO=0,PROTVAR=ECMA2,

SEGMENT=8,DEV=S2CONN;

Assign LCR routes for route optimization with closed numbering as follows:
From node 300 to node 100:

From physical node 2-89-300 to physical node 2-89-100:
```
ADD-RICHT:MODE=LRTENEW,LRTE=901,NAME="ROUTEOPT",
TGRP=10,DNNO=1-89-100,ROUTOPT=YES,INFO="ROUTEOPT TO 100",
PDNNO=2-89-100;
```
Define an outdial rule with the AMO LODR:
```
ADD-LODR:ODR=1,CMD=ECHO,FIELD=1;

ADD-LODR:ODR=1,CMD=END;

ADD-LODR:ODR=1,INFO="CLOSED NUMBERING ROPT";
```
Define a routing element with the AMO LDAT:
```
ADD-LDAT:LROUTE=901,LVAL=1,TGRP=10,ODR=1,LAUTH=1;
```
Add a digit pattern with the AMO LDPLN:
```
ADD-LDPLN:LDP=828901-T,LROUTE=901,LAUTH=1;
```
From physical node 2-89-300 to physical node 2-89-200:
```
ADD-RICHT:MODE=LRTENEW,LRTE=902,NAME="ROUTEOPT",
TGRP=10,DNNO=1-89-200,ROUTOPT=YES,INFO="ROUTEOPT TO 200",
PDNNO=2-89-200;
```
Define an outdial rule with the AMO LODR:
```
ADD-LODR:ODR=1,CMD=ECHO,FIELD=1;

ADD-LODR:ODR=1,CMD=END;

ADD-LODR:ODR=1,INFO="CLOSED NUMBERING ROPT";
```
Define a routing element with the AMO LDAT:
```
ADD-LDAT:LROUTE=902,LVAL=1,TGRP=20,ODR=1,LAUTH=1;
```
Add a digit pattern with the AMO LDPLN:
```
ADD-LDPLN:LDP=828902-T,LROUTE=902,LAUTH=1;
```
Assign a route for closed numbering, ROUTOPT=NO is default:
```
ADD-RICHT:MODE=CD,LRTE=400,CD=40,CPS=0,SVC=ALL,
NAME="TO NODE 400  ",TGRP1=40,DESTNO=40,DNNO=1-89-400,
ROUTOPT=NO,PDNNO=1-89-400;
```
IMPORTANT:

Since the Hicom 300 V3.2 node does not recognize route optimization, it is not specifically configured for this function. All lines to this node must be marked as non-ROPT-capable (AMO COT, AMO TDCSU and AMO RICHT) to ensure that no attempt is made to send ROPT-specific messages to the node.

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