Advanced PABX from Siemens:
* HiCom Series:
* HiPath Series:
* Optiset E Series
* Optipoint 500 Series
* ISDN PABX
* ISDN Telephones
* ISDN Components and Installation
* ISDN Tester
from 1 to 8 Trunk Lines
from 4 to 128 Extensions
* DECT PABX CS20
* DECT Phones
* Extendes range for any DECT System up to 5.000 meters with the new DistyBox