Cisco ASR 5000 Series Administration Manual page 35

HNB Gateway in UMTS Network
4. On reception of successful RANAP Iu Release Complete command in RUA-DISCONNECT Response message
from HNB, the HNB-GW sends RANAP Iu Release Complete command in SCCP-DATA-FORM1 Response
message to CN (SGSN/MSC).
5. On reception of RANAP Iu Release Complete command in SCCP-DATA-FORM1 Response message from
HNB-GW, CN sends SCCP-RELEASED message to HNB-GW and triggers the associated SCCP connection.
6. On reception of SCCP-RELEASED message from CN, the HNB-GW sends RUA-DISCONNECT message to
HNB and disconnect the Iuh connection with HNB.
7. After successful completion of RUA-DISCONNECT procedure and Iuh connection release, HNB-GW sends
SCCP-RELEASE-COMPLETE message to CN and HNB-GW confirms the Iu-PS/CS connection released
between HNB-GW and CN.
OL-22991-01
Cisco ASR 5000 Series 3G Home NodeB Gateway Administration Guide ▄
How HNB-GW Works ▀