Manual

2
Two types of ERROR Indication messages are possible:
3
Case 1: HNB-GW detects Error in the incoming message from CBC. HNB-GW sends ERROR indication
to CBC. HNB-GW includes message identifier, for which error has been detected, in ERROR indication.
4
Case 2: Incoming SABP message from CBC is forwarded to HNB by HNB-GW. HNB detects error in
this message which must have been detected at HNB-GW. In this case:
a
HNB sends ERROR indication with message identifier to HNB-GW.
b
HNB-GW takes no action, rather the SABP timeout for that message identifier takes care of sending
the failure response towards the CBC from HNB-GW.
RESTART
Following figure and text points describe the RESTART call procedure:
Figure 18: RESTART Message Call Flow
1
After successful registration with HNB-GW, HNB initiates RESTART towards HNB-GW. HNB-GW
transparently forwards this message to CBC.
2
The service area (SA) for broadcast in HNB Registration request is optional. If SA received in RESTART
is different from the SA for broadcast in HNB Registration request then SA in RESTART is stored as the
Broadcast SA at HNB-GW and the same is forwarded To CBC.
3
Class 1 SABP messages received from CBC are forwarded to HNB after receiving the HNB registration
with SA for broadcast and RESTART from HNB.
4
While sending the RESTART towards the CBC, if TCP connection with CBC is not established, HNB-GW
makes one attempt to initiate the TCP connection with CBC.
HNB-GW Administration Guide, StarOS Release 19
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HNB Gateway in Wireless Network
CBS Call Procedures