Specifications

3-18 Module Installation
Chapter 3 - Installation
Cascading
When the station loop limit is beyond the 100 meter (330 feet) limit, hubs may be
cascaded to extend the range. For the SHUB8, simply connect the extension hubs with
their UPLINK port to a LAN 1X-8X port of the previous SHUB8 in the cascade.
Figure 3-14: Erroneous Loop Wiring
RS-232 Connections
RS-232 ConnectionsRS-232 Connections
RS-232 Connections
The DB-9 connectors located on the front panel of gateway Modules are RS-232 serial
ports. These connectors are employed to provide system trace and diagnostic routines for
the individual Modules. The MFIM has two such ports, which may be assigned for the
desired function (SMDR, ACD, etc.). Refer to the
Telenium
IP
System Programming Manual.
As a default, the serial ports of MFIM are set-up for 8 bits, no parity, and one stop bit
running at 38,400 bps. All other Modules are set-up for 7bits, no parity, and two stop bits
running at 38,400 bps. To modify these settings, refer to the
Telenium
IP
System
Programming Manual.
The SHUB8 does not support spanning tree. Do not create a loop when connecting these
hubs to each other or other network components.