Multitech SF100-G-EU Specifications download pdf (Page 53)

Chapter 4 – Using the MultiModem iSMS Web Interface

53 MultiModem® iSMS System Administrator’s Guide

SMS Services > Load Balancing

This feature provides a single interface to your Send SMS application when multiple units are needed for increased

throughput. When multiple iSMS units are available on a network, they can be set up to work together to share the

outgoing message load. This is achieved by designating one unit to be the Master and subsequent units (up to 4) to be

Slaves. Your Send SMS application does not need to make any changes when Load Balancing is enabled. The send SMS

application still uses either of the send APIs (HTTP or TCP) to submit SMS messages for sending.

When the amount of "pending" messages within the Master reaches a system threshold, the Slave units are polled by the

Master for availability, and if so available, pending messages are distributed dynamically to the slaves. Once initiated, the

Master unit uses the slaves until the send queue is reduced sufficiently below the threshold. Your Send SMS Application

can not specify the slave unit through which a particular message is sent.

The number of pending messages needed to surpass the threshold is a variable based on the length of each message

(character count per message) and the MultiModem iSMS model number. The threshold is increased as the model

number increases.

Load Balancing

Status

Check the Status box on every unit that is participating in Load Balancing and click Save.

Note:

When using Load Balancing, each Slave unit must have the TCP API Status enabled. The Master unit communicates

to the slaves via TCP API access.

Slave Configuration

Slave Configuration information is only to be defined in the Master unit.

Slave#

The slave# tabs are used to identify which units are slave units and login information.

Status

This box is checked only on the Master unit. Uncheck this checkbox for all Slave units.

Username

Enter the valid administrator username needed to access the Slave unit.

Password

Enter the valid administrator password needed to access the Slave unit.

IP Address

Enter the IP Address of the Slave unit.

TCP API Port

Enter the open port used to access the Slave unit.

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Multitech SF100-G-EU Specifications Page 53