User Manual

ArchitectureNortel Networks Confidential 3–49
S8000/S8002/S8006 BTS Reference Manual
3.4.3.2 DRX soft blocking coupled with a forced handover
To speed up the DRX shutting down, the DRX soft blocking can be coupled with
a forced handover. The calls will be handed over a neighbour cell if the signal
strength is over the handover threshold for that cell.
3.4.3.3 Hint
The two actions mentionned above can be performed into a unique command to a
better efficiency of the DRX shutting down.
3.4.4 Power supply board
The power supply card provides a dc voltage between 40.5 V and 57 V, to be
converted into +5 V, +12 V and –12 V. The 48 V voltage is sent first to the logical
DRX unit converter, then, after filtering, to the logical DRX unit and the radio DRX
unit converter.
The power supply of the board varies according to the DRX types and on the
frequencies.
The mechanical and electrical grounds are linked to the common reference zero
volts.