Consolidated Platform Configuration Guide, Cisco Ios Release 15.2(4)E (Catalyst 2960-X Switches - Cisco Catalyst 2960 series Configuration Manual

Cause Description 11.0
Codes
1900 - The no
Q850 equipment
Invalid that is
Element sending
Contents this code
has
received an
information
element
that it has
implemented;
however,
one or
more fields
in the
information
element are
coded in
such a way
that has not
been
implemented
by the
equipment
that is
sending
this code.
This code
applies to
ISDN or
modem
calls that
have come
in over
ISDN.
11.1 11.2 11.3
no no no

Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)

Information About TACACS+
12.0 12.1 12.2
no no no
12.3
yes
877