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
1888 - The no
Q850 equipment
Incompatible that is
Destination sending
this code
has
received a
request to
establish a
call that
has
low-layer
compatibility
or other
compatibility
attributes
that cannot
be
accommodated.
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
873