Major Parameters [MGW Index]

This parameter uniquely identifies an MGW in the system.

[Control Module No.]

This parameter sets the module number of the WMGC managing the gateway. The module number is set in the ADD BRD command, and you can query it with the command LST MDU. This parameter is used in gateway registration, link state maintenance, gateway state auditing, and handling of gateway faults.

If the WIFM, WBSG and WMGC are combined into one board, set this parameter to the module number of the WIFM.

[Transport protocol]

Set this parameter according to the actual networking requirement. MSOFTX3000 provides such three transport protocols as UDP, SCTP, and MTP3B for the H.248 protocol. In the mobile network applications, you can select one of the following based on the actual networking conditions:

z Bearer over IP: SCTP and UDP

z Bearer over ATM: MTP3B

Currently, IP/SCTP bearer mode is used.

It specifies the identifier of the bearer control unit (BCU), and it identifies a physical MGW. It is unique and global in the network. It is used in bearer independent call control protocol (BICC). For H.248-based MGW, it is a mandatory parameter.

[BNC character]

It defines the bearer category supported by MGW. According to different service categories, it can be divided into TDM, IP, ATM adaptation layer type 1 (AAL1), AAL2, and AAL1Struct.

z ATM network: AAL1Struct, AAL1 or AAL2

z IP network: IP

z TDM network: TDM [Special Attributes]

It defines the special attributes of MGW in specific networking.

The meanings of the options are as follows:

z SDP HEX: It defines whether the SDP packets sent by the MSOFTX3000 to the MG are in HEX format. Select this option only when the MG is the TMG8010 manufactured by Huawei. In the other cases, do not select it.

z No BNC Character: Set it to “Yes” for universal media gateway (UMG), which means that UMG carries backbone network connection (BNC) character packet.

As BNC character packet is not supported on access media gateway (AMG), TMG, integrated access device (IAD), or media resource server (MRS), this option is not configured.

z No Echo Cancellation: It defines whether the MGCP/H.248 messages sent by the MSOFTX3000 to the MG contain no echo cancellation (EC) field.

z No Jitter: It defines whether the MGCP/H.248 messages sent by the MSOFTX3000 to the MG contain no jitter buffer field.

z No Fax: It defines whether to detect fax.

z No Modem: It defines whether to detect modem.

z Local SDP Address Present: It defines whether a local IP address is included when modifying a local codec. This parameter is mandatory only when MGW is IAD.

This parameter need not be set in the mobile network. The default value is used.

[MGW Attribute]

This parameter is used to set office type, such as local office and remote office.

For different transport layer protocols supported by MGW, there are different configurations:

z SCTP configuration

It specifies the device name. It should be the same as that defined in MGW. The parameter is valid only when MGW uses SCTP.

[Server/Client]

It specifies whether MGW acts as a server or client. Note that you must set one end of the SCTP link to Client, and the other end to Server; otherwise, the SCTP link cannot be established. Therefore, negotiation with MGW is necessary. Generally, set MSOFTX3000 to Server, and MGW to Client. The parameter is available when MGW uses SCTP.

z UDP configuration [Domain Name]

It specifies the domain name. It should be the same as that defined in MGW. The parameter is valid only when MGW uses UDP.

z MTP3B configuration [MTP Name]

It specifies the MTP name. It should be the same as that defined in MGW. The parameter is valid only when MGW applies MTP3B.

The following parameters are used to encrypt stack information:

[Encryption type]

This parameter is used to set encryption type, including MD5, SHA1 and Not Supported.

It is used to encrypt or decrypt protocol stack information. Use the default value.

[Security Parameters Index] [Sequence Number] [Key length]

They are parameters for interconnection between MSOFTX3000 and MGW, used for encrypting stack information.

The following parameters are used to set MGW capability set:

[Capability]

It specifies the MGW capabilities, including Tone, Playing Announcement, Sending dual tone multi-frequency (DTMF), Detecting DTMF, Multiparty, and interworking function (IWF).

[Rate of EC]

This parameter is used to control echo cancellation capability. Set it according to the actual capability of MGW, and it should be larger than 0. The recommended value is 300.

This parameter refers to the IWF capability. Set it according to the actual capability of MGW, and it should be larger than 0. The recommended value is 300.

[Rate of TC]

This parameter is used to set the coding/decoding capability. Set it according to the actual capability of MGW, and it should be larger than 0.

[Rate of TONE]

MGW supports playing tone. Set the parameter according to the actual capability of MGW, and it should be larger than 0. The recommended value is 300.

[Rate of Multiparty]

This parameter is used to set the multiparty service capability of MGW. Set it according to the actual capability of MGW, and it should be larger than 0.

[Rate of Detect DTMF]

Set this parameter according to the actual capability of MGW, and it should be larger than 0. The recommended value is 300.

[Rate of Send DTMF]

Set it according to the actual capability of MGW, and it should be larger than 0. The recommended value is 300.

[HR AMR Rate]

It specifies the rate of the half rate (HR) adaptive multi-rate (AMR).

[UMTS AMR2 Rate]

It specifies the rate of UMTS AMR2.

[FR AMR Rate]

It specifies the rate of full rate (FR) AMR.

[UMTS AMR Rate]

It specifies the rate of UMTS AMR.

[IWF Modem List]

This parameter is used to define the types of modems supported by MGW. You can select according to the actual situation.

[Codec List]

This parameter is used to define the codec types supported by MGW, such as PCMA,

[Main Type]

This parameter is used in dual-homing configuration to configure the master/slave type of the MGW. In case of dual-homing, configure according to the actual situation;

otherwise, use the default value, that is, TRUE (Master MGW).

IV. Related Commands

See Table 4-3 for the commands related to MGW configuration.

Table 4-3 List of commands related to MGW configuration

Command Description

ADD MGW To add MGW

RMV MGW To remove MGW

MOD MGW To modify attributes of MGW LST MGW To list attributes of all MGWs

DSP MGW To display attributes of MGW of the host

4.4.2 Adding SCTP Link to MGW

I. Background Information None

II. Command