PNR is used for routing of outgoing external private network calls i.e. calls terminating in the own private network. The function is the same as with basic routing, but PNR enables a lot more destinations to be stated as entry to routing.
In addition to this, PNR enables each destination to have two route choices with enhanced number translation. One route choice can have a PRE of maximum 10 digits, and the other a PRE of maximum 16 digits. This is often sufficient for routing through the public network.
This means that the system is able to handle much bigger numbering plans by using PNR.
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PNR structure
PNR is basically a preprocessor to the existing basic routing software. The pre-process consists of two tables where the dialled number leads to a prefix, which in turn addresses a Route Choice Table (RCT).
Basic routing uses the dialled number directly to address an RCT.
An RCT is all the route choices for a (fictitious) destination. Each route choice uses one destination data record. The route choices are initiated with the command RODDI .
The first PNR table is the PNR Destination Number Table (PR DNT). This is a table with 1500 entries where an entered destination (parameter ENTRY) will result in an index (parameter FRCT) to the next table, the fictitious RCT.
Also the enhanced number translation data are stored in the PR DNT, two sets per destination.
The prefix stored in the fictitious RCT is used to address an RCT. The prefix is used by itself as a destination, it is not used for prefixing.
The purpose of the fictitious RCT is to restrict the addressing of the RCTs.
The purpose with restricting the addressing of the RCTs is that RCTs are taken from the common pool of 2500 destination data records that PNR shares with LCR and basic routing. An RCT may consist of up to 8 linked route choices, where each route choice uses one destination data record ( RODDI

EST=,CHO=).
With PNR, one RCT may be used by many entries in the PR DNT. Because of this possibility of efficient utilization of the RCTs there should be enough destination data records for all (PNR, LCR and basic routing) if the PNR-configuration (and LCR-configuration) is well planned. This will be shown in the examples below.
The PNR data tables are administered by the command group LC and data is set, deleted or printed using the LCDDI /E/P commands where the parameter TAB is set to either PNR or RCT.
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Prerequisites
Initiate the external destination number series using the command NANSI :
NANSI :NUMTYP=ED,NUMSE=85024;
NANSI :NUMTYP=ED,NUMSE=85040;
These external destination numbers will be used to address the PNR access code in the PR DNT.
If the market dependent parameter (MDP) NONADESTCHECK is set to Check is made, the prefix in the fictitious RCT must be initiated as an external destination number. This MDP states if the destination is to be checked in the number analysis or not.
NANSI :NUMTYP=ED,NUMSE=0123;
This external destination number is used by PNR to address an RCT. It is necessary to initiate it in the number analysis in order to be able to initiate it as a destination in the external analysis.
Initiate the external destination number series for PSTN access using the command NANSI :
NANSI :NUMTYP=ED,NUMSE=00;
This external destination is required for overflow to the PSTN, when the dialled number is translated into a public number.
Outgoing routes must be assigned.
In the following examples ROU=50 is a tie line route and ROU=20/30 are public external line routes.
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Execution
Example 1, initiation of a tie line route
Initiate a route between the location Karlskrona (KA) and the locations Bollmora (BO) and Sundbyberg (SG).
(HF is Huvudfabriken, a transit exchange near BO/SG.)
The route in this example is a single tie line route.
Initiate the PNR access code for BO and SG. The same FRCT may be used for both BO and SG as they are both reached using the same route. Using the same FRCT means that they will share the same RCT.
FRCT may be assigned any value between 1 and 64, X is used in this example.
LCDDI :TAB=PNR,ENTRY=85024,FRCT=X;
LCDDI :TAB=PNR,ENTRY=85040,FRCT=X;
Result:
Table 7-1 PR DNT - PNR Destination Number Table ENTRY PRE TRC PRE TRC FRCT
85024 X
85040 X
Initiate the data in position X in the fictitious route choice table for PNR.
The digits 0123 are used as prefix (external destination).
Note: RCT in the LCDDI command is only used as a parameter to distinguish this table from the other tables handled by the LCDDI command.
LCDDI :TAB=RCT,FRCT=X,PRE=0123;
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Result:
Initiate the RCT in the external analysis.
RODDI

EST=0123,ROU=50,SRT=5;
The SRT value depends on how the numbering plan in the network is set up. If the composed number is passing a transit exchange, the whole number may be sent, and the decision of the further routing is made in that same transit exchange.
Result:
Now the single tie line route between KA and BO/SG is initiated. If the user dials 85024 or 85040 followed by the extension number, the system will select route 50 for the completion of the call. The digits sent to the co-operating exchange will be either 24xxx or 40xxx.
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Example 2, initiation of an alternative route
Add a public alternative to the single tie line route between the location Karlskrona (KA) and the locations Bollmora (BO) and Sundbyberg (SG).
In this case the private numbers 85024 and 85040 will be translated individually.
The national public directory number for Bollmora is 08-682xxxx and for Sundbyberg 08-764xxx, where 08 is the area code and the following digits is the subscriber number (location code + directory number).
Add an alternative RCT.
No editing information (PRE/TRC) is assigned with RODDI , instead a flag in the route choice indicates that this information will be found in the PNR destination table, under the PNR access code that was used to address the present RCT. The flag is: D 16 is set to 1 in the ADC parameter. The 1 also refers to set 1 in the PR DNT.
RODDI

EST=0123,ROU=50,SRT=5; (initiated earlier)
RODDI

EST=0123,ROU=30,SRT=3,CHO=1,ADC=000000000000025100000;
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Result:
Update the PNR access code with the individual number translation information (set 1) for the BO and SG locations.
LCDDI :TAB=PNR,ENTRY=85024,FRCT=X,TRC=3,PRE=000868;
LCDDI :TAB=PNR,ENTRY=85040,FRCT=X,TRC=3,PRE=000876;
Result:
PR DNT - PNR Destination Number Table ENTRY PRE TRC PRE TRC FRCT
85024 000868 3 X
85040 000876 3 X
Now the public choice is initiated. With alternative routing the route 30 is selected. The number translation information is found in the PR DNT (set 1) as indicated by D 16 in the ADC parameter.
If the user dials 85024/85040 followed by an extension directory number, and meet congestion at the ordinary choice, the system selects route 30 for completion of the call. The digits sent out to the co-operating exchange will be either 08682xxxx or 08764xxxx as indicated by set 1 of individual number translation information.
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Example 3, initiation of a second alternative route
Add a second alternative to the single tie line route between the location Karlskrona (KA) and the locations Bollmora (BO) and Sundbyberg (SG).
In this example a second set of individual number translation data is assigned to the private numbers 85024 and 85040. As there is no second network between KA and BO/SG in real life, the symbolic national PDN NNNNNN is used in this example.
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Add a second alternative RCT.
No editing information (TRC/PRE) is assigned with RODDI , instead a flag in the route choice indicates that this information will be found in the PNR destination table, under the PNR access code that was used to address the present RCT.
The flag is: D 16 is set to 2 in the ADC parameter. The 2 also refers to set 2 in the PR DNT.
RODDI

EST=0123,ROU=50,SRT=5; (initiated earlier)
RODDI

EST=0123,ROU=30,SRT=3,CHO=1,ADC=xxxxxxxxxxxxx251xxxxx; (initiated earlier)
RODDI

EST=0123,ROU=20,SRT=3,CHO=2,ADC=xxxxxxxxxxxxx252xxxxx;
Result:
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Update the PNR access code with the individual number translation information (set 2) for the BO and SG locations.
LCDDI :TAB=PNR,ENTRY=85024,FRCT=X,TRC=3,PRE=000868,TRC1=N,PRE1=NNNNNN;
LCDDI :TAB=PNR,ENTRY=85040,FRCT=X,TRC=3,PRE=000876,TRC1=N,PRE1=NNNNNN;
Result:
PR DNT - PNR Destination Number Table ENTRY PRE TRC PRE TRC FRCT
85024 000868 3 N X
85040 000876 3 N X
Now the second choice is initiated. With alternative routing the route 20 is selected. The number translation information is found in the PR DNT (set 2) as indicated by D 16 in the ADC parameter.
If the user dials 85024/85040 followed by an extension directory number, and meet congestion at both the ordinary choice and the first alternative choice, the system selects route 20 for completion of the call. The digits sent out to the co-operating exchange will be either NNNNNNxxxx or NNNNNNxxxx as indicated by set 2 of individual number translation information.
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I wish this could help you, sorry i was out for a training
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