Dialogic TX4000 PCI SS7 Installation Manual download pdf (Page 34)

Establishing network connections TX 4000 PCI SS7 Network Interface Board Installation Manual

Connecting TX boards for redundancy

Use the redundancy feature to enable the system to detect and recover from the

failure of signaling links on a TX 4000 board, the failure of a signaling node, or the

failure of the TX 4000 board itself.

In a redundant configuration, each pair of TX boards is connected through a private

Ethernet connection. If other devices are connected to the private Ethernet link,

avoid overloading the link. Packets can be lost between the redundant TX boards if

the connection is overloaded.

This topic describes dual-node redundant signaling and single-node redundant

signaling for the following types of configurations:

• TDM configuration

• IP network configuration

TDM configuration

To connect a TX 4000 board to its redundant mate in a TDM configuration, use a

Category 5 shielded twisted pair (STP) crossover cable. With the crossover cable,

connect Ethernet 1 on the primary board to Ethernet 1 on the backup board.

You must specify the IP address of the TX board’s redundant mate using the mate

command in the txconfig utility. You must also define the IP interface address using

the ifcreate command (for interface 1) in the txconfig utility. For more information,

refer to the Dialogic® NaturalAccess™ Signaling Software Configuration Manual.

Dual-node redundant signaling server

The following illustration shows how to set up two TX 4000 boards based on a dual-

node redundant signaling server in a TDM configuration. The boards are located in

two separate chassis to ensure board-level and system-level redundancy.

Chassis 1

with TX 4000

(primary)

Chassis 2

with TX 4000

(backup)

SS7 links

Private Ethernet connection

Ethernet 1

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Dialogic TX4000 PCI SS7 Installation Manual Page 34