This section describes how to configure the Pb interface for the communication between the PCU and the BSC6900 configured with the external PCU. You need to configure the E1 link and signaling link.
8.1 Configuring the Ater Interface (over TDM)
This section describes how to configure the TDM-based Ater interface to implement the communication between the MPS/EPS and the TCS when the BSC6900 is in BM/TC separated mode.
Prerequisite
l The subrack to be configured with an Ater connection path is configured.
l The EIUa/OIUa/POUc board is configured in the subrack to be configured with an Ater connection path.
Context
l If the TCS is configured locally, the Ater connection path must be configured. If the TCS is configured remotely, the Ater connection path, Ater OML, and Ater signaling link must be configured and the Ater OML needs to be established only between the MPS and the main TCS.
l The Ater connection path is established between EIUa boards or between OIUa boards.
You can specify different ports to configure more than one Ater connection path between interface boards.
Procedure
l If the TCS is configured locally:
1. Configure an Ater connection path.
(1) Run the ADD ATERCONPATH command to add an Ater connection path between the MPS and the TCS.
(2) In TC pool mode, run the ADD ATERE1T1 command to add an Ater connection path between the BSC6900 and the TC.
l If the TCS is configured remotely:
1. Configure an Ater connection path.
(1) Run the ADD ATERCONPATH command to add an Ater connection path between the MPS and the main TCS.
(2) In TC pool mode, run the ADD ATERE1T1 command to add an Ater connection path between the BSC6900 and the TC.
2. Run the ADD ATEROML command to add an Ater OML between the MPS and the main TCS.
NOTE
l At least four consecutive timeslots except timeslot 1 must be used for Ater OMLs.
l It is recommended that a pair of active and standby Ater OMLs be configured.
l If the BIOS version of the EIUa/OIUa board is earlier than 215, the Ater OML of the primary BSC must be configured on the Ater connection path that is carried on port 0.
l In TC pool mode, the secondary BSCs do not need to be configured with Ater OMLs.
3. Run the ADD ATERSL command to add an Ater signaling link between the MPS/
EPS and the TCS.
NOTE
l Timeslot 1 of the local main TCS and remote main TCS is reserved and cannot be configured.
Timeslot 1 of other TCSs can be configured.
l A maximum of 64 timeslots on each Ater interface board can be used for Ater signaling links.
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8.2 Configuring the Ater Interface (over IP)
This section describes how to configure the IP-based Ater interface to improve the transmission efficiency and reduce transmission cost over the Ater interface when the BSC6900 is in BM/TC separated and remote TCS mode.
Prerequisite
l A license for implementing IP transmission over the Ater interface has been obtained.
l The subrack to be configured with an Ater connection path is configured.
l The POUc board is configured in the subrack to be configured with an Ater connection path.
l The Ater connection path, OMLs, and signaling links are configured. For details, see Configuring the Ater Interface (over TDM).
Context
In the case of IP over Ater, IP over Ethernet is not supported over the Ater interface, and the user plane can adopt only the IP over E1/T1 transmission mode. The data configuration for the signaling plane similar to that in the case of TDM over Ater.
Procedure
Step 1 Configure the physical layer and data link layer for the POUc board.
Step 2 Run the SET BSCBASIC command. In this step:
l Set Service mode to SEPARATE.
l Set Ater Interface Transfer Mode to IP.
Step 3 Run the ADD ADJNODE command to add an adjacent node. In this step, set Adjacent Node Type to BSC.
Step 4 Optional: Configure transmission resource mapping.
1. Run the ADD TRMMAP command to add a transmission resource mapping table for the Ater interface.
2. Run the ADD TRMFACTOR command to add an activation factor table for the Ater interface.
3. Run the ADD ADJMAP command to add the TRM mapping to the adjacent node and to add the mapping from interface transmission type to TRMMAP index and factor index.
Step 5 Run the ADD IPPATH command to add an IP path. To add more IP paths, repeat this step until all desired IP paths are added.
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8.3 Configuring the A Interface (over TDM)
This section describes how to configure the TDM-based A interface in BM/TC separated mode or BM/TC combined mode.
Prerequisite
l The basic data of the BSC6900 is configured. For details, see Configuring the Basic Data.
l The OPC and DPC are configured. For details, see Configuring the OPC and DPC.
l The EIUa/OIUa/POUc/XPUa board is configured. For details, see Configuring a Board.
Procedure
Step 1 Run the ADD GCNNODE command to add a GSM CN node.
Step 2 Run the ADD AE1T1 command to add an E1/T1 over the A interface.
Step 3 Run the ADD MTP3LKS command to add an MTP3 signaling link set.
Step 4 Run the ADD MTP3LNK command to add an MTP3 signaling link.
Step 5 Run the ADD MTP3RT command to add an MTP3 route.
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8.4 Configuring the A Interface (over IP)
This section describes how to configure the IP-based A interface.
Prerequisite
A license for implementing IP transmission over the A interface is granted.
8.4.1 Configuring the Physical Layer and Data Link Layer of the A Interface (over IP)
This section describes how to configure the physical layer and data link layer of the A interface on the BSC6900 in IP transmission mode. Before the configuration, specify the type of interface board according to network planning.
Configuring the Physical Layer and Data Link Layer for the FG2a/GOUa/FG2c/
GOUc Board
This section describes how to configure the physical layer and data link layer for the FG2a/FG2c/
GOUa/GOUc board, which is used as the interface board of the BSC6900. You need to set the Ethernet port attributes, add the standby Ethernet port, add the IP address of the Ethernet port, add the link aggregation group, add the link to the link aggregation group, add the IP address of the link aggregation group, and add the device IP address.
Prerequisite
The basic data of the BSC6900 has been configured. For details, see Configuring the Basic Data.
Procedure
Step 1 Set the Ethernet port attributes.
1. Run the LST ETHPORT command to list the attributes of the Ethernet port.
2. Optional: If the planned data is inconsistent with the default data, run the SET ETHPORT command to set the attributes of the Ethernet port.
Step 2 Optional: Run the ADD ETHREDPORT command to configure Ethernet port backup.
Step 3 Optional: Run the ADD DEVIP command to add the device IP address of the board in the case of logical IP networking. In this step, set Device IP Address Type to LOGIC_IP.
Step 4 Check whether the link aggregation function is required and then perform the corresponding step.
If you select... Then...
Link non-aggregation mode Go to Step 5.
Link aggregation mode Go to Step 7.
Step 5 In link non-aggregation mode, run the ADD ETHIP command to add the IP address of the Ethernet port. When multiple VLAN gateways are planned, repeat this step until all the IP addresses are added.
Step 6 Optional: Run the ADD VLANID command to add an IP address to the VLAN ID mapping table.
Step 7 In link aggregation mode, complete the following steps:
1. Run the ADD ETHTRK command to add a link aggregation group.
NOTE
You can run the DSP ETHTRK command to query the status of a link aggregation group.
2. Run the ADD ETHTRKLNK command to add a link to the link aggregation group. To add more links to the link aggregation group, repeat this step until all desired links are added.
NOTE
l You can run the DSP ETHTRKLNK command to query the status of a link in a link aggregation group and the related statistics.
l The links in a link aggregation group can be carried by non-adjacent ports.
l The port to which a link aggregation group is bound and a port on another board cannot work in active/standby mode or load sharing mode.
l If a link in a link aggregation group becomes faulty, the system automatically removes this link.
When this link becomes normal, the port carrying this link automatically negotiates with the peer end. If the negotiation is successful, the link is automatically added to the link aggregation group.
3. Run the ADD ETHTRKIP command to add the IP address of the link aggregation group.
When multiple VLAN gateways are planned, repeat this step until all the IP addresses are added.
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Configuring the Physical Layer and Data Link Layer for the PEUa Board
This section describes how to configure the physical layer and data link layer for the PEUa board, which is used as the interface board of the BSC6900. You need to set the E1/T1 attributes and device IP address, and configure the PPP link, MP link group, and MP link.
Prerequisite
The basic data of the BSC6900 is configured. For details, see Configuring the Basic Data.
Context
The MP link group is also referred to as PPP link group. Either a PPP link or an MP link group must be configured.
Procedure
Step 1 Set the E1/T1 link attributes.
1. Run the LST E1T1 command to list the attributes of an E1/T1 link.
2. Optional: If the planned data is inconsistent with the default data, run the SET E1T1 command to set the attributes of the E1/T1 link.
Step 2 Optional: Run the ADD DEVIP command to add the device IP address of the board in the case of logical IP networking. In this step, set Device IP Address Type to LOGIC_IP.
Step 3 Determine the type of link carried on the E1/T1 link (PPP link or MP link group) and perform the corresponding step.
If the E1/T1 link carries a/an... Then...
PPP link Go to Step 4.
MP link group Go to Step 5.
Step 4 Configure a PPP link.
Run the ADD PPPLNK command to add a PPP link. To add more PPP links, run this command repeatedly. In this step:
l Set Board type to PEUa.
l Set Logic function type to IP.
l It is recommended that Borrow DevIP be set to YES.
Step 5 Add an MP link group.
1. Run the ADD MPGRP command to add an MP link group. In this step:
l Set Board type to PEUa.
l Set Logic function type to IP.
l It is recommended that Borrow DevIP be set to YES.
2. Run the ADD MPLNK command to add an MP link. To add more MP links, run this command repeatedly. Set Board type to PEUa.
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Configuring the Physical Layer and Data Link Layer for the POUc Board
This section describes how to configure the physical layer and data link layer for the POUc board, which is used as the interface board of the BSC6900. You need to set the E1/T1 attributes, optical port attributes, and attributes of a channelized optical port. In addition, you need to configure the PPP link, MP link group, and MP link.
Prerequisite
The basic data of the BSC6900 is configured. For details, see Configuring the Basic Data.
Context
The MP link group is also referred to as PPP link group. Either a PPP link or an MP link group must be configured.
Procedure
Step 1 Set the E1/T1 link attributes.
1. Run the LST E1T1 command to list the attributes of an E1/T1 link.
2. Optional: If the planned data is inconsistent with the default data, run the SET E1T1 command to set the attributes of the E1/T1 link.
Step 2 Set the optical port attributes.
1. Run the LST OPT command to list the attributes of an optical port.
2. Optional: If the planned data is inconsistent with the default data, run the SET OPT command to set the attributes of the optical port.
Step 3 Optional: When the BSC6900 needs to interconnect with the equipment from another vendor, run the SET COPTLNK command to set the attributes of a channelized optical port on the interface board.
Step 4 Optional: Run the ADD DEVIP command to add the device IP address of the board in the case of logical IP networking. In this step, set Device IP Address Type to LOGIC_IP.
Step 5 Determine the type of link carried on the E1/T1 link (PPP link or MP link group) and perform the corresponding step.
If the E1/T1 link carries a/an... Then...
PPP link Go to Step 6.
MP link group Go to Step 7.
Step 6 Configure a PPP link.
Run the ADD PPPLNK command to add a PPP link. To add more PPP links, repeat this step until all desired PPP links are added. In this step:
l Set Board type to POUc.
l It is recommended that Borrow DevIP be set to YES.
Step 7 Add an MP link group.
1. Run the ADD MPGRP command to add an MP link group. In this step:
l Set Board type to POUc.
l It is recommended that Borrow DevIP be set to YES.
2. Run the ADD MPLNK command to add an MP link. To add more MP links, repeat this step until all desired MP links are added. Set Board Type to POUc.
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8.4.2 Configuring the Control Plane of the A Interface (over IP)
This section describes how to configure the control plane of the IP-based A interface on the BSC6900 side. You need to configure the SCTP link, M3UA link set, M3UA route, M3UA link, and adjacent node.
Prerequisite
l The M3UA local and destination entities are configured. For details, see Configuring the M3UA Local and Destination Entities.
l The physical layer and data link layer of the A interface are configured. For details, see 8.4.1 Configuring the Physical Layer and Data Link Layer of the A Interface (over IP).
Procedure
Step 1 Run the ADD GCNNODE command to add a GSM CN node.
Step 2 Run the ADD SCTPLNK command to add an SCTP link. To add more SCTP links, run this command repeatedly. In this step:
l Set Signalling link mode to CLIENT.
l Set Application type to M3UA.
Step 3 Run the ADD M3LKS command to add an M3UA link set. In this step:
l When Local entity type is set to M3UA_IPSP, Work mode of the M3UA link set must be set to M3UA_IPSP.
l When Local entity type is set to M3UA_ASP, Work mode of the M3UA link set must be set to M3UA_IPSP if Destination entity type is set to M3UA_SP, or Work mode of the M3UA link set must be set to M3UA_ASP if the destination entity type is either of the other two values.
NOTE
You can set Local entity type through the ADD M3LE command and set Destination entity type through the ADD M3DE command.
Step 4 Run the ADD M3RT command to add an M3UA route.
Step 5 Run the ADD M3LNK command to add an M3UA link. To add more M3UA links, run this command repeatedly.
Step 6 Run the ADD ADJNODE command to add an adjacent node. Set Adjacent Node Type to A.
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8.4.3 Configuring the Mapping Between Service Types and Transmission Resources
This section describes how to configure the mapping between the service types and transmission resources for the adjacent node. You can configure the TRM mapping table and activity factor table for users with different priorities.
Prerequisite
The basic data of the BSC6900 is configured. For details, see Configuring the Basic Data.
Procedure
Step 1 Run the ADD TRMMAP command to add a TRM mapping table. To add more TRM mapping tables, run this command repeatedly.
Step 2 Run the ADD TRMFACTOR command to add an activity factor table.
Step 3 Run the ADD ADJMAP command to configure the TRM mapping table and activity factor table for users with different priorities.
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8.4.4 Configuring the User Plane of the A Interface (over IP)
This section describes how to configure the user plane of the A interface on the BSC6900 in IP transmission mode. You need to configure the IP path and IP route.
Prerequisite
The control plane of the IP-based A interface is configured. For details, see Configuring the Control Plane of the A Interface (over IP).
Procedure
Step 1 Run the ADD IPPATH command to add an IP path. To add more IP paths, repeat this step until all desired IP paths are added.
NOTE
l If the type of IP path is QoS, the IP path can match any path type in the TRMMAP table.
l If the type of IP path is non-QoS, the type should be the one mapped to the service in the TRMMAP table.
l You can run the SET PHBMAP command to set the priority of an IP path type.
l The transmission bandwidth and reception bandwidth can be set according to the actual network planning.
Step 2 Optional: Run the ADD IPRT command to add an IP route when the layer 3 networking mode is used between the BSC6900 and the MSC/MGW. To add more IP routes, repeat this step until all desired IP routes are added.
Step 3 Optional: Run the LST GLOBALROUTESW command to query the value of the global route management switch. If the global route management function is not required but the global route management switch is set to ON, run the SET GLOBALROUTESW command to set the global route management switch to OFF.
Step 4 Run the SET TCTYPE command to set the TC DSP resource type. In this step, set The type of TC resource to ITC.
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8.5 Configuring the Gb Interface (over FR)
This section describes how to configure the FR-based Gb interface for the communication between the SGSN and the BSC6900 configured with the built-in PCU. You need to configure the Network Service Entity (NSE), Bearer Channel (BC), Network Service Virtual Connection (NSVC), and Point to Point BSSGP Virtual Connection (PTPBVC).
Prerequisite
l The basic data of the BSC6900 is configured. For details, see Configuring the Basic Data.
l The DPUd/XPUa/PEUa board is configured. For details, see Configuring a Board.
Context
l At the Network Service (NS) layer, NSE is represented by a set of NSVCs and is identified by the NSEI.
l In Gb over FR mode, a BC is a physical bearer channel, which is composed of a certain number of timeslots of the E1/T1.
l An NSVC is carried by a BC and belongs to only one BC and only one NSE, whereas a BC or NSE can be configured with multiple NSVCs.
l An NSVC maps to a PVC. When configuring an NSVC, specify its mapping PVC.
l BSSGP is short for Base Station Subsystem GPRS Protocol.
l A GPRS cell refers to a cell that is GPRS enabled.
Procedure
Step 1 Run the SET BSCPCUTYPE command to set the PCU type. Set PCU Type to INNER.
Step 2 Run the ADD SGSNNODE command to add an SGSN node.
Step 2 Run the ADD SGSNNODE command to add an SGSN node.