Siemens SANTIS-ab - Manual (Page 5)

5
2. Operating Modes
The connection to the public telephone network as well as the
selection of one of the following three operating modes must be
done by an authorized person, e.g. telecom staff:
1. NT+2ab S- and a/b-interfaces available
2. NTBA Only S-interface available
3. Pairgain Only a/b-interfaces available