16.4  

Dual-mode Telephony 
 
SIP-enabled dual-mode devices which support GSM/UMTS and WLAN can be registered and configured on the system as SIP terminals. In the same way as with virtual subscribers, a logical link can be established between the existing mobile number and the number to be configured for the dual-mode device as a SIP station.
The "Call forwarding station not available" feature automatically forwards incoming calls to the mobile phone number if the dual-mode device is outside the WLAN range and is therefore not registered on the HiPath 3000.