Exalt Communications, Inc.
r-series
Installation and Management Manual
5000007 (ETSI)
50
2007-02-12 (draft)
T1/E1 Configuration Pages
These pages allow the administrator to selectively enable or disable the T1 or E1 circuits, one at
a time. For enabled T1/E1 circuits, additional configuration, including loopback functions, are
available. Disable the unused T1 or E1 so that the alarms are turned off and more throughput is
allocated to the Ethernet interface. Every enabled T1 or E1 input, 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 and E1, as required, by clicking the Set to T1 or Set to E1 button.
A warning displays that a reboot is necessary, and the radio reboots if the administrator
continues.
This will interrupt traffic.
It may be necessary to re-login to the radio after the reboot
completes. T1/E1 mode self-coordinates across the link if the link is active. This means that it
only needs to be set while connected at one end. In addition, enabling and disabling T1/E1
circuits also self-coordinates across the link if the link is active. If a link is not active and T1/E1
enabling is a mismatch when a link is first created, the Radio A configuration for T1/E1 enabling
supersedes the settings on the Radio B configuration, and changes the settings on Radio B.
Certain combinations of the TDD Frame Size, Link Distance, Mode, and
Bandwidth parameter settings limit the number of T1/E1 circuits that can be
carried by the radio. In these cases, certain fields on the T1/E1 Interface
Configuration pages are not available, starting with the highest port number. For
example, for a 4x T1/E1 radio version, if only three (3) circuits can be carried,
port 4 is not available for configuration and is disabled. If only two circuits can be
carried, both ports 3 and 4 are not available. Increasing the TDD frame size and
Mode parameters, and/or increasing the Bandwidth parameter results in an
increase in the supported number of T1/E1 circuits. For ‘-16’models, the highest
number channels that are configurable (based on the currently installed license
key) are disabled if they cannot be supported with the current settings.