Call Control
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
the function Broadcast.
Asynchronous Handover
The Activation for Asynchronous Handover procedure is in accordance
with /GSM:08.58:4.1/.
Classification (see section Concepts) of optional elements:
Encryption Information
Optional
Handover Reference
Required
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
the function Broadcast.
Channel Activation response
If the CHANNEL_ACTIVATION message is correct and the resources
required are available, the RBS sends a
CHANNEL_ACTIVATION_ACKNOWLEDGE message to the BSC /
GSM:08.58:8.4.2/.Otherwise, a
CHANNEL_ACTIVATION_NEGATIVE_ACKNOWLEDGE /
GSM:08.58:8.4.3/ is sent to the BSC.
If the Channel Activation procedure fails after the acknowledgement
has been sent to the BSC, a CONNECTION_FAILURE_INDICATION
message /GSM:08.58:8.4.4/ is sent to the BSC.
38.3.2
Adaptive Frame Alignment
The Adaptive Frame Alignment procedure is used for ensuring that the
bursts received in the RBS from active MSs at different distances from
the RBS, are in time alignment. To ensure this, the RBS must inform
the MS at which instant the MS shall start sending its bursts /
GSM:05.10:5/.
Channel combinations supported are defined in section Channel
Activation above.
Access Delay Measurement
From the start of normal burst reception on a dedicated channel, the
RBS measures the Access Delay on all received bursts.
246 (306)
EN/LZT 123 2697
R5A
1998-08-13
© Ericsson Radio Systems AB
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