== CBSP Messages

=== List of Messages

The following tables list the CBSP messages used by OsmoBSC BSC-CBC interface,
grouped by their level of compliance with 3GPP TS 48.049.

==== Messages Compliant With TS 48.049

Specific additions and limitations apply, see the linked sections.

.Messages compliant with TS 48.049
[options="header",cols="10%,20%,45%,5%,20%"]
|===
| TS 48.049 § | This document § | Message | <-/-> | Received/Sent by OsmoBSC
| 8.1.3.1  | - | WRITE-REPLACE | <- | Received
| 8.1.3.2  | - | WRITE-REPLACE COMPLETE | -> | Sent
| 8.1.3.3  | - | WRITE-REPLACE FAILURE | -> | Sent
| 8.1.3.4  | - | KILL | <- | Received
| 8.1.3.5  | - | KILL COMPLETE | -> | Sent
| 8.1.3.6  | - | KILL FAILURE | -> | Sent
| 8.1.3.10 | - | MESSAGE STATUS QUERY | <- | Received
| 8.1.3.11 | - | MESSAGE STATUS QUERY COMPLETE | -> | Sent
| 8.1.3.12 | - | MESSAGE STATUS QUERY FAILURE | -> | Sent
| 8.1.3.16 | - | RESET | <- | Received
| 8.1.3.17 | - | RESET COMPLETE | -> | Sent
| 8.1.3.18 | <<RESET_FAILURE>> | RESET FAILURE | -> | Sent
| 8.1.3.18a | <<KEEP_ALIVE>> | KEEP-ALIVE | <- | Received
| 8.1.3.18b | - | KEEP-ALIVE COMPLETE | -> | Sent
| 8.1.3.19 | <<RESTART>> | RESTART | -> | Sent
|===

==== Messages Not Implemented by OsmoBSC

.3GPP TS 48.049 messages not implemented by OsmoBSC
[options="header",cols="30%,45%,5%,20%"]
|===
| TS 48.049 § | Message | <-/-> | Received/Sent by OsmoBSC
| 8.1.3.7  | LOAD QUERY | <- | Received
| 8.1.3.8  | LOAD QUERY COMPLETE | -> | Sent
| 8.1.3.9  | LOAD QUERY FAILURE | -> | Sent
| 8.1.3.13 | SET-DRX | <- | Received
| 8.1.3.14 | SET-DRX COMPLETE | -> | Sent
| 8.1.3.15 | SET-DRX FAILURE | -> | Sent
| 8.1.3.20 | FAILURE | -> | Sent
| 8.1.3.21 | ERROR INDICATION | -> | Sent
|===


=== Message Limitation Details

[[RESET_FAILURE]]
==== RESET FAILURE

Encoding of this message is implemented, but there is currently no
condition in the OsmoBSC code that would make a RESET operation fail on
an existing cell, except if the CBC were to identify
a non-existent cell in its _Cell List IE_.

[[KEEP_ALIVE]]
==== KEEP-ALIVE

The message is received and generates a corresponding KEEP-ALIVE
COMPLETE answer.  However, the _Keep Alive Repetition Period IE_ is not
interpreted.

[[RESTART]]
==== RESTART

The RESTART message is sent only at the time of establishment of every
CBSP link.  It is not sent when subsequent cells become available during
runtime of the CBSP link.