Sony Ericsson G30 - Manual (Page 17)

Connecting Devices to the FWT
Fixed Wireless Terminal: G30 and G35 models 17
Warning: In order to avoid GSM interferences (noise), place the
FWT at least three (3) meters (horizontal) away from electronic
devices, including the telephone equipment connected to the FWT,
or other household electronic devices such as televisions or radio
receivers. The difference in height should be at least 2 meters
(vertical). This is not necessary if you use telephone devices that
fulfill the Immunity Characteristics settled by the IEC CISPR-24
standard. In this case, a minimum security distance of 20 cm is
recommended.
Connecting the FWT to a PBX
This feature is only available for the FWT G35 model. The G35 FWT is
designed to provide a telephone line (RJ11 connector) that behaves in the
same way as an analog trunk.
Generic requirements
The PBX should meet the following generic requirements for FWT
connectivity:
•
The PBX must provide analog trunks.
•
One position of the trunk must be assigned to each FWT.
•
The trunk card must support either Busy Tone Detection (BTD)
or Polarity Reversal Detection on answer and release.