Z02215
Single Chip Modem with Integrated Controller, Data Pump, and AFE
47
Blacklisting Management
Blacklisting applies separately to each number dialed, and indicates the call block-
ing capability for specific phone numbers. To minimize RAM, calls are treated as if
they are all to the same number.
The first connection attempt after modem reset or a successful connection is
always allowed. If a connection attempt is not successful, then each following con-
nection attempt is checked as follows:
a. If voice answer was detected too many times the attempt is not allowed,
the modem returns a BLACKLISTED result code.
b. If the attempt occurred too quickly (within the inter-call timing period) then
the attempt is not allowed, and the modem returns a DELAYED result
code.
c. If there is a blacklisting period limiting the number of attempts that may be
made within the period, and too many attempts are made, then the attempt
is not allowed, the modem returns a DELAYED (if a call may be made
later) or BLACKLISTED result code (if no calls may be made later).
The following Blacklisting parameters can be controlled through Diplomat™:
•
•
•
Minimum delay in seconds between successive dial attempts
Number of successive dial attempts after which (c) applies
Minimum delay in seconds between successive dial attempts after (b)
unsuccessful dial attempts
•
•
Maximum number of dial attempts permitted in a series of dial attempts
Blacklisting period in minutes for each series of dial attempts
Technical Specifications
Configurations and Data Rates
The Z02215 can be configured to any of the V.22bis operation modes. Table 9
provides the selectable options, the supported data rate, and the baud rate, and
frequency to be modulated.
Data Encoding
The data encoding for the Z02215 meets ITU–T recommendations as well as Bell
standards.
PS001907-0904
Blacklisting Management
ZILOG [ ZILOG, INC. ]
