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Voice Feature Guide 01

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Configuring the VoIP ISDN BRA Service (SIP-based)

Configuring the VoIP ISDN BRA Service (SIP-based)

After configuring the SIP interface, you can add VoIP ISDN BRA users on this interface to implement the VoIP ISDN BRA service.

Prerequisites

According to the actual network, a route from the MA5600T/MA5603T/MA5608T to the IMS must be configured to ensure that the MA5600T/MA5603T/MA5608T communicates with the IMS normally.

Context

  • The ISDN is integrated services digital network. Defined by the International Telegraph and Telephone Consultative Committee (CCITT), the ISDN technology provides two types of user-network interfaces based on the user-network interface reference model.
    • ISDN basic rate interface (BRI), which supports a rate of 144 kbit/s and provides two B channels (for carrying services) and one D channel (for transmitting call control signaling and maintenance and management signaling). The rate of B channels is 64 kbit/s and the rate of D channel is 16 kbit/s. The service carried on the ISDN BRI is the ISDN basic rate access (BRA) service.
    • ISDN primary rate interface (PRI), which supports a rate of 2.048 Mbit/s and provides 30 B channels and one D channel. The rates of the B channel and D channel are both 64 kbit/s. The service carried on the ISDN PRI is the ISDN primary rate access (PRA) service.

The MA5600T/MA5603T/MA5608T can also function as a voice over IP gateway (VGW) in the IMS architecture. In the downstream direction, it is connected to the ISDN BRA users; in the upstream direction, it is connected to the IMS system through the SIP interface, providing the VoIP ISDN BRA service by working with the IMS core.

The functions and applications of the SIP interface are the same as the functions and applications of the MG interface.

Data preparation

Table 1-27 provides the data plan for configuring the VoIP ISDN BRA service.
Table 1-27 Data plan for configuring the VoIP ISDN BRA service when the SIP protocol is used

Item

Remarks

SIP interface data

Media and signaling parameters

Media and signaling upstream VLAN

It is used for the upstream VLAN of the VoIP service to be configured.
NOTICE:
Note that the media and the signaling can use the same VLAN or different VLANs, depending on the negotiation with the upstream device.

Signaling upstream port

Uplink port for configuring the SIP signaling.

Media IP address and signaling IP address

These IP addresses must be selected from the media and signaling IP address pools. The media and signaling IP address pools consists of all the IP addresses of the Layer 3 interface of the media and signaling upstream VLAN.

Default IP address of the MG

Next hop address from the MA5600T/MA5603T/MA5608T to the IMS core network device.

NOTICE:
If the media IP address and the signaling IP address are different and the media and the signaling are transmitted upstream through different gateways, ensure that they correspond to correct gateways. Otherwise, the call service may fail.

Attributes of the SIP interface

NOTE:

Parameters listed here are mandatory, which means that the SIP interface cannot be enabled if these parameters are not configured.

SIP interface ID

It is used for the VoIP service to be configured.

Signaling port ID of the SIP interface

The value range is 5000-5999. The protocol defines the port ID as 5060.

IP address of the active IMS core network device to which the SIP interface belongs

When dual homing is not configured, parameters of only one IMS core network device are required. When dual homing is required, the IP address and the port ID of the standby IMS core network device must be configured.

Port ID of the active IMS core network device to which the SIP interface belongs

Transmission mode of the SIP interface

The transmission mode is selected according to the requirements of the IMS core network device. Generally, UDP is used.

Home domain of the SIP interface

It corresponds to parameter home-domain in the MG interface attributes.

Index of the profile used by the SIP interface

It corresponds to parameter Profile-index in the MG interface attributes.

IP address obtaining mode of the proxy server

  • In the IP mode, the IP address and the port ID of the active proxy server must be configured.
  • In the DNS-A or DNS-SRV mode, the domain name of the active proxy server must be configured.

ISDN BRA user data

(The data configuration must be consistent with the data configuration on the IMS.)

Slot that houses the BRA service board.

-

User data

Phone number

The phone number that the IMS core network device allocates to the user must be configured.

User priority

According to the service requirements, user priorities must be specified, including:

  • cat1: government1 (category 1 government user)
  • cat2: government2 (category 2 government user)
  • cat3: common (default priority, namely, common users)

System parameters

The system parameters including the oversea version flag and message waiting indication (MWI) mode need to be configured according to the local standards to ensure that the response of the user terminal complies with the local standards.

Overseas parameters

The attributes such as the upper and lower thresholds of the flash-hooking duration need to be configured according to the local standards to ensure that the response of the user terminal complies with the local standards.

Attributes of an ISDN BRA Port

The attributes such as the working mode, remote power supply status, and auto-deactivation status of the port can be configured. Modify such attributes only if there is a special requirement.

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Updated: 2019-02-22

Document ID: EDOC1100067358

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