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
1897 - The no
Q850 Non equipment
Existent that is
Message sending
Type this code
has
received a
message
with a
message
type that it
does not
recognize
either
because
this is a
message
that is not
defined or
that is
defined but
not
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
875