Chapter 6 Configuring Data for Interworking with BSC
II. Command ADD/MOD AIETKC
III. Major Parameters
[Module]
It refers to the module number of the WCCU or WCSU to which the A interface trunk circuit belongs. You can query this parameter with the LST MDU command.
[Trunk Group]
It refers to the number of the A interface trunk group to which a trunk circuit belongs.
This parameter is defined in the ADD AIETG command.
[Start Circuit]
It is used internally in MSOFTX3000, and corresponds to TID and CIC. It must be unique within the office and it is recommended that the value be consistent with that of TID.
[End Circuit]
It is used internally in MSOFTX3000, and corresponds to TID and CIC. It must be unique within the office and it is recommended that the value be consistent with that of TID.
[Start CIC]
This parameter refers to the unique indicator of an A interface circuit. It must correspond to the Start CIC at the BSC side.
[Circuit State]
This parameter defines the state of a circuit or a batch of circuits added. Use the default value “Available”.
This parameter refers to the ID of a termination corresponding to the start circuit. It is an important parameter to identify a physical circuit, and is used to indicate through which E1 the MGW is connected to BSC. This parameter needs to be configured in MGW to make Termination ID correspond to E1 timeslot one to one, so as to get the start termination ID of the E1 connecting with BSC.
IV. Related Commands
See Table 6-15 for the commands related to the configuration of A-interface trunk circuit.
Table 6-15 List of commands related to the configuration of A-interface trunk circuit
Command Description
ADD AIETKC To add an A-interface trunk circuit MOD AIETKC To modify an A interface trunk circuit
DSP AIETKC To display the status of A-interface trunk circuits of the host RMV TKC To remove a trunk circuit (including A-interface trunk circuit) BLK AIETKC To block an A interface trunk circuit
UBL AIETKC To unblock an A interface trunk circuit RST AIETKC To reset an A interface trunk circuit
Important Note:
After adding a circuit, use the MOD AIETKC command to set timeslot 0 (synchronization timeslot) of the E1 and set the timeslot configured as a link to “Unavailable”. Select timeslot 0 of the E1 and the timeslot configured as a link (associated with “Start Circuit No.” in the ADD N7LNK command) for the parameters
“Start Circuit” and “End Circuit”. Select “Unavailable” for the parameter “Circuit State”.
6.5 Configuration Example
6.5.1 Example Description
Suppose the networking model is as shown in Figure 6-6.
MGW (SG) MSOFTX
3000
MGW
ServerMSC SGSN
GMLC
SCP SMC HLR
PSTN
RNC BSC
ISUP,BSSAP / TDM H.248,RANAP
/IP
RANAP/AAL2/ATM BSSAP/TDM
ISUP/TDM ISUP/TDM
IP/TDM
BSSAP+/TDM MAP/TDM
MAP/TDM MAP/TDM
MAP/TDM
SPC
Figure 6-6 Networking of MSOFTX3000
As shown in the figure, MSOFTX3000 and MGW are integrated; The semi-permanent connection is created on MGW, which transparently transmits A-interface messages between BSC and MSOFTX3000; TDM bearer is adopted between MSOFTX3000 and MGW as well as between MGW and BSC.
This example adds a BSC, which is connected to MGW. Table 6-16 shows the related information. For the local office information, refer to Table 3-14 in Chapter 3.
Table 6-16 BSC information table
Item Data Basic
information
Signaling
point code Signaling point network
number Link set Intra-module link number
Circuit Termination ID (the number of the physical circuit from MGW to BSC)
CIC MGW index
/ 96–127 0–31 1
Trunk route Office direction Trunk group Circuit type
3 3 BSSAP
Prefix Local prefix Route selection code
/ 1390752 65535
6.5.2 Configuration Description
//Query the information.
LST OFI:; //Query the OPC whose NI=NATB
LST SCCPSSN: NI=NATB, SPC="C04"; //Query whether the local end has been configured with SCMG subsystem
LST BRD: BT=WCSU; //Query the type of the signaling link configured on WCSU
//Add MTP data.
ADD N7DSP: DPX=3, NI=NATB, DPC="C03", OPC="C04", DPNAME="BSC-3";
ADD N7LKS: LSX=3, ASPX=3, LSNAME="BSC-3";
ADD N7RT: LSX=3, DPX=3, RTNAME="BSC-3";
ADD N7LNK: MN=22, LNKN=3, LNKNAME="BSC3-1", LNKTYPE=0, TS=112, LSX=3, SLC=0;
//Add SCCP data.
ADD SCCPDSP: DPX=3, NI=NATB, DPC="C03", OPC="C04", DPNAME="BSC-3", SHAREFLAG=NONE;
ADD SCCPSSN: SSNX=7, NI=NATB, SSN=BSSAP/INAP, SPC="C04", OPC="C04", SSNNAME="LOCAL-SCMG";
ADD SCCPSSN: SSNX=8, NI=NATB, SSN=SCMG, SPC="C03", OPC="C04", SSNNAME="BSC-SCMG";
ADD SCCPSSN: SSNX=9, NI=NATB, SSN=BSSAP/INAP, SPC="C03", OPC="C04", SSNNAME="BSC-BSSAP";
//Add BSSAP data.
LST INOFFMSC:; //Query MSC/VLR number LST MGW:; //Query MGW index
ADD OFC: OFFICEDIR=3, ON="BSC-3", OOFFICT=BSC, DOL=LOW, DOA=BSC, NI=NAT2, DPC1="C03", SIG=MTP3;
ADD BSC: DPC="C03", BSCNM="BSC-3", MSCMN1=22, RSSC=0, BTSNUM=1, MLAIF=FALSE, LAI="460000001";
ADD LAIGCI: GCI="460000001", LAIGCINAME="BSC3-LAI", MSCN="8613600004", VLRN="8613600004", LAICAT=LAI, LAIT=HVLR, BSCDPC1="C03", OFFICNUM="3";
ADD LAIGCI: GCI="4600000010001", LAIGCINAME="BSC3-GCI", MSCN="8613600004", VLRN="8613600004", LAICAT=GCI, LAIT=HVLR, BSCDPC1="C03",OFFICNUM="3";
ADD RANMGW: OFFICENO=3, MGWIDX=1;
//Add trunk data.
ADD ACPOOL: CPNO=0, BCR=SFR1-1&SFR2-1&SFR3-1&SHR1-1&SHR2-1&SHR3-1&DFR-1&DHR-1;
ADD AIETG: TG=3, MGW=1, SOPC="C04", SDPC="C03", TGN="BSC-3", CPN=0;
ADD AIETKC: MN=22, TG=3, SC=96, EC=127, SCIC=0, SCF=TRUE, TID=96;
MOD AIETKC: MN=22, SC=112, EC=112, CS=UNU;
MOD AIETKC: MN=22, SC=96, EC=96, CS=UNU;