Reference Manual

Call Control
The reactivation for the multislot configuration procedure is in
accordance with /GSM 08.58:4.1/.
Encryption Information Optional
Handover Reference Rejected
Timing Advance Rejected
SACCH Information Optional
If the parameter SACCH Information is present, the contents will be
used for this channel group instead of the information received in the
SACCH FILLING INFORMATION MODIFY procedure described in
Broadcast.
Description
The RBS receives a Channel_Activation message from BSC, in order to
reactivate an already activated channel between MS and RBS. The RBS
reactivates the channel with new parameters. /GSM 08.58:4.6/
During the reactivation, information flows are not interrupted.
If the reactivating of the channel is successful, the RBS answers with
Channel_Activation_Acknowledgement. Otherwise, if the channel for
some reason cannot activate, the answer is a
Channel_Activation_Negative_Acknowledgement.
P003011A
RBS BSC
CHAN ACTIV ACK
CHAN ACTIV
OR
CHAN ACTIV NCK
MS
Figure 94 Channel reactivation
20.16 Power Information
Purpose
To change output power on the air interface between RBS and MS.
Precondition and Initiation
Transparent transmission in acknowledged mode requires that
multiframe mode has been established.
The function is initiated when a DATA REQUEST message containing
information element Power Information is received by the RBS.
210 (421)
EN/LZT 720 0008 R1A
2001-06-26
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