MHC

Multisite HLR Coordinator (MHC) supports distributed HLR across UW R4S nodes of a mesh network through HLR data replication and synchronization. Automatic replication and synchronization of HLR data across multiple UW R4S node sites enable subscribers to register to the Mesh UW R4S GSM network at any nodes ‘locally’. MHC must attaches to a UW R4S HLR - the ‘host’ HLR of the coordinator. The principal duty of MHC is to cooperate with other meshed MHC to synchronize the HLR data among the UW R4S nodes in a mesh network. In order to synchronize the HLR among the nodes of a Mesh UW R4S network, a MHC will broadcast the alterations of its host HLR to other MHC and will update its host HLR according to the alterations received from other MHC. MHC supports dual system architecture of UW R4S HLR. Each HLR of a dual HLR system will has one MHC attached.

Each node of a Mesh UW R4S Network requires MHC to provide the Multisite HLR functions. MHC provides multisite HLR networking, data replication, data synchronization and periodic data verification functions. MHC function is transparent to other GSM applications. It doesn’t affect the GSM functions of the UW R4S system.

Feature	Descriptions
Capacity	Up to 100K postpaid subscribers per node Up to 16 nodes per segment Support 2 hierarchical segment structure
Interface	SNMP among MHCs
Basic Services	MO/MT call Emergency call
Supplementary Services	Call forwarding: •Call forward unconditional (CFU) •Call forward on busy (CFB) •Call forward on not reply (CFNRy) •Call forward on not reachable (CFNRc) Call barring / Operator determined barring •Barring of All Outgoing Calls (BAOC) •Barring of Outgoing International Calls (BOIC) •Barring of All Incoming Calls (BAIC) Calling line identification presentation (CLIP) Calling line identification restriction (CLIR) Connected line identification presentation (COLP) Connected line identification restriction (COLR) Call hold Call waiting Explicit call transfer (ECT) 3-party call Premium call Password control Operator specific barring (OSB) Barring of Outgoing International Calls except those directed towards the Home PLMN Country (BOIC-exHC) Barring of Incoming Calls when Roaming outside the home PLMN country (BIC-Roam)
Enhanced Services	Short message service Voice mail service USSD service
Featured Services	Multisite HLR Data replication Multisite HLR Data synchronization Multisite HLR Periodic data verification Multisite HLR Dual system networking
License Control	MHC application flag
Operation and Maintenance	SNMP network management IE browser client console Web page based graphic user interface Real time status display System parameter maintenance Organized call measurements and operation logs

Parameter	Definition	Range
System	--	--
•MHC State	(Read Only) The current status of local MHC. It is read-only and controlled by License.	•ON •OFF
•CDR Flag	Enable or disable MHC CDR generation.	•ON •OFF
•Synchronization Interval	The time interval between sending successive SYN commands to the destination nodes.	1 - 255 seconds
•Verification Interval	The time interval between sending successive verification commands to the destination nodes.
•Download Interval	The time interval between sending successive download commands to the destination nodes.
•Replication Interval	The time interval between sending successive replication commands to the destination nodes.
•Verification Start Time	The start time of daily HLR data verification procedure.	01AM - 12PM
•HLR Checksum Field	Enable or disable HLR subscriber checksum for each data fields.	•ON •OFF
•Replication Rate	The limited number of replicating subscribers per 50ms.	1 - 255
MHC Node	--	Max 16 items
•Name	Specify an identifiable name for the MHC node.	--
•IP 0	The IP address of the MHC in the first platform.	Dotted decimal format
•IP 1	The IP address of the MHC in the second platform. It is available for the dual system node.	Dotted decimal format
•Administration State	Control the operation of the managed MHC node. •Unblock = Enable blocked MHC node. •Block = Disable MHC node manually.	•Unblock •Block