Kentrox AI232 - Manual (Page 28)

AI232 Version 9.6x User’s Guide
Product Description: Typical Applications
1-14
Modem Multiplexer Application
Figure 1-8 illustrates a modem multiplexer application.
Figure 1-8 Modem Multiplexer Application
The following events occur in Figure 1-8 :
z The OSS sends a TCP/IP call to AI232.
z AI232 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.
z The modem routes the call through the PSTN (packet switched telephone
network) to a remote modem.
z The remote modem sends the call to an NE.
Operational
Support System
TCP/IP
AI
2
3
2
Modem
Packet Switched
Telephone Network
Modem
Modem
Modem
NE
NE
NE
Serial
Links Ethernet
Modem
Modem