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
1903 - The no
Q850 Info equipment
Element that is
Error sending
this code
has
received a
message
that
includes
information
elements or
parameters
that are not
recognized
because the
information
element
identifiers
or
paramenter
names are
not defined
or are
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
879