| 摘要 |
<p>In a cordless telecommunications system a call carried by a first radio link between a first base-station and a cordless handset may be transferred to one carried by a second radio link between a new base-station which is one of a plurality of frame synchronised base-stations and the cordless handset, the base-stations being connected to a Private Automatic Branch Exchange PABX, by carrying out the steps of: (i) the first base-station monitoring the quality of the first radio link, and upon deterioration of the link-sending a first message to the PABX, (ii) the PABX upon receipt of the first message initiating monitoring of the quality of radio transmissions from the cordless handset by the base-stations, (iii) a new base-station detecting a radio link from the handset whose quality exceeds a predetermined value sending a second message to the PABX, and (iv) the PABX connecting the call from the handset to the new base-station in parallel with the first base-station, and then transferring transmission between the first and second radio links.</p> |
