Exalt Communications, Inc.
EX-5i Installation & Management
5000005
45
2006-05-17
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)
may be enabled/disabled for each input. If enabled, the radio will place an AIS code on the
output of the associated interface if/when the link fails or there is no T1 signal available from the
far end to provide the user at the local end.
Figure 5-11: T1 Configuration Page
5.9.2 E1 Configuration Page
The E1 Configuration Page allows the administrator to enable/disable each individual E1. Also,
AIS (alarm indication signal) may be enabled/disabled for each input. If enabled, the radio will
