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TB9400 Installation and Operation Manual
Working with Base Stations from Your PC
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© Tait Limited April 2014
Configure the channel group settings to specify fixed marshalling and 
allow a duration of 40ms. This gives the control channel’s transmitter an 
appropriate buffer (control channels do not use the preamble to regulate the 
transmit buffer). 
Trunking Interface
Single base stations need a control connection to their site controller. A 
single base station interfaces to the site controller in the same way as the 
master base station in a trunked channel group. Select Configure > 
Network Interfaces > Trunking to configure this.
4.4.6
Configuring Base Stations in a Channel Group
You can configure the way the base station behaves in its channel group. 
Also, qualified network engineers can change DSCP assignments, so that 
routers and switches provide a different quality of service to different types 
of IP packets.
In trunked networks, many base stations are single and not actually part of 
a channel group. However, they still must be assigned to a channel group 
configuration and some of its parameters must be set correctly.
4.4.7
Setting Up Custom Alarms
Each of the base station’s 12 digital inputs can be used to raise a custom 
alarm when the input goes high or low. The Custom Alarms form 
(Configure > Alarms > Custom Alarms) allows you to assign a name to 
each custom alarm, and to configure whether the alarm is triggered when 
the digital input goes high or low. Custom alarms are reported via the web 
interface and SNMP traps.
Custom alarms are used to provide an alarm when an external event 
activates a digital input. You can rename any of the available alarms to 
provide a more meaningful name, such as “Door open”.
4.4.8
Disabling the Front Panel Keypad
You can disable the front panel keypad to prevent access to the base station 
via the front panel menus. Select Configure > Base Station > Miscellaneous 
and in the Front Panel area clear the Keypad enabled check box.
Notice If you disable the front panel keypad, you cannot use it to find 
out the base station’s IP address. Make sure that you store the IP address 
securely and do not lose it.