Allied Telesis AT-S99 - Manual (Page 39)

AT-S73 and AT-S99 Management Software User’s Guide
39
The AT-CM70S Line Card is an exception to this rule because it has an
RS-232 port for local management of the T1/E1 ports when the card is
installed in a chassis that does not have a management card. For further
information, refer to Chapter 7, ”Configuring the T1/E1 Ports on the
AT-CM70S Media Converter Line Card” on page 191.