Kentrox AI232 manual Modem Multiplexer Application, Illustrates a modem multiplexer application

AI232 Version 9.6x User’s Guide

Product Description: Typical Applications

Modem Multiplexer Application

Figure 1-8 illustrates a modem multiplexer application.

TCP/IP

OperationalEthernet Support System

AI

2

3

2

Serial

Links

Modem

Modem

Modem

NE

NE

NE

Modem
Modem	Packet Switched
	Telephone Network
Modem

Figure 1-8 Modem Multiplexer Application

The following events occur in Figure 1-8:

zThe OSS sends a TCP/IP call to AI232.

zAI232 routes the TCP/IP call over a serial link to one of several available modems in a modem pool. When a call comes in that requires a modem, one is selected from the pool and dials out appropriately. For information on configuring the modem pool and modem selection for incoming calls, refer to the Modem Mux configuration menu.



Note: Round-robin dialing has been incorporated for ModMux links to balance the demand placed on available modems by incoming calls. Rather than always starting at the first available modem, the ModMux driver rotates through all available modems so that the first available one is not always the first to be dialed.

zThe modem routes the call through the PSTN (packet switched telephone network) to a remote modem.

zThe remote modem sends the call to an NE.

1-14