Section 5.14.2. Announcement Unit

5.14.2. Announcement Unit

Announcement unit for a node without exchange trunks

Seizure from all nodes is possible.

Figure 22. Announcement unit throughout the network, also via CO

For station users who want to access the announcement unit via incoming calls from the exchange, the announcement code must be additionally assigned for the "SAT" DAR in the DPLN (of the node with the trunks). For external stations, the route to the announcement unit must be formed with the announcement unit code, the CPS 3&6 and the same group as for internal announcement.

In the COT of the S2 circuits, with which the node with the announcement unit is seized via the exchange, the RCLS parameter must be set. Thus, CPS=6 (incoming trunk) is generated for the CO seizure type, which is required for controlling the TCOM (first greeting text, then announcement text).

Commands in node 1 (for example in above diagram)
- Assign the code for DAR=NETRTE as follows:
```
AD-WABE:CO=002,DAR=NETRTE;
```
- Assign announcement code for external stations
```
AD-WABE:CD=73,DAR=SAT;
```
- Assign announcement code for internal stations
```
AD-WABE:CD=73,CPS=2&4&5&7&8&9&10&11&12,DAR=NETW; 
```
- Assign route for announcement code of internal stations to node 2
```
AD-RICHT:TYPE=CD,CD=002,CPS=0,SVC=ALL,TGRP1=33; 
```
- Assign route for announcement code of external stations to node 2
```
AD-RICHT:TYPE=CD, CD=73, CPS=3&6, SVC=ALL, 
TGRP1=33, PREFDGT1=73; 
```
Commands in node 2
- Assign announcement codes for internal and external stations
```
AD-WABE:CD=73,DAR=ANSCO; 
AD-WABE:CD=73,DAR=ANSINT; 
```
Commands in node 3
- Assign code for DAR=NETRTE
```
AB-WABE:CD=003,DAR=NETRTE;
```
- Assign announcement code for internal stations
```
AD-WABE:CD=73,DAR=NETW; 
```
- Assign route with DAR=NETRTE to node 2
```
AD-RICHT:TYPE=CD, CD=003, CPS=0, SVC=ALL, TGRP1=40;
```

Announcement unit for a node with exchange trunks

If the node with the TCOM also provides trunks, which are to be used by the other nodes as well, with the same exchange code, proceed as follows since the digit analysis result CO cannot be allocated CPS=6.

Figure 23. Node with announcement unit and exchange trunks

In node 1, the exchange code of node 2 must lead to DAR CO, for example, and be linked with the tie-trunk group; conversion to another code, e.g. 73, must be performed. Conversion is done via digit prefixing with the RICHT AMO.

Commands in node 1
```
AD-WABE:CD=8, DAR=CO; 

AD-RICHT:TYPE=CD, CD=8, SVC=ALL, TGRP1=number, PREFDGT1=73; 
```
In node 2 code 73 leads to the SAT digit analysis result and is linked with the trunk group.

Commands in node 2

AD-WABE:CD=8, DAR=CO; 
AD-WABE:CD=73, DAR=SAT; 
AD-RICHT:TYPE=CD, CD=8, SVC=ALL, TGRP1=number, CPAR=CO; 
AD-RICHT:TYPE=CD,CD=73, SVC=ALL, TGRP1=number, CPAR=CO;

This generates a second exchange code which is not apparent to the user.

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