User's Manual

Exalt Communications, Inc.
EX-5r Installation & Management
5000007 39
2006-05-17
devices (the radio and the connected equipment) are set to auto-negotiate, both hard set to
100/Full, or one set to 100/Full and the other auto-negotiate. Device performance varies widely.
Therefore, it can be advantageous to attempt different combinations of settings to determine the
best combination for your application.
Figure 5-10: Ethernet Interface Configuration Page
5.9 T1/E1 Configuration Pages
This page allows the administrator to selectively enable or disable T1 or E1 circuits, one at a
time. If T1 or E1 circuits are not going to be used, they should be disabled so that alarms are
turned off and so that more throughput is allocated to the Ethernet interface. Every T1 or E1
input enabled, even if there is no T1 or E1 signal present, reduces the aggregate throughput of
the Ethernet interface by roughly 3Mbps (for T1) or 4Mbps (for E1).
This page toggles between T1 or E1, as required, by pressing the ‘SET TO T1’ or ‘SET TO E1’
button. Pressing this button will warn the administrator that a reboot is necessary, and the radio
will reboot if the administrator continues. This will interrupt traffic, and it may be necessary to
re-login to the radio after the reboot is completed. Changing T1/E1 mode will self-coordinate
across the link if the link is active. In other words, this change only needs to occur at one side of
the link. In addition, enabling and disabling T1/E1 circuits also will self-coordinate across the
link if the link is active.
Certain combinations of TDD Frame Size, Link Distance and Bandwidth will
limit the number of T1/E1 circuits that can be carried by the radio. In these cases,
the selections on the T1/E1 Interface Configuration pages will not be available,
starting with Port 4. For example, if only three (3) circuits can be carried, Port 4
will not be available for configuration and will be disabled. If only two (2)
circuits can be carried, Port 3 and Port 4 will not be available.
5.9.1 T1 Configuration Page
The T1 Configuration Page allows the administrator to enable/disable each individual T1, set the
Line Build Out (LBO) and Line Code (either AMI or B8ZS). Also, AIS (alarm indication signal)