Global Title Translation
Association Configuration Mode Commands
The Global Title Translation
(GTT) Association configuration mode provides the commands to create the
rules for translating the global titles (destination point codes
and subsystem address in the messages) used for routing at the SCCP
layer.
Upon accessing this
mode, your prompt should look similar to the following:
[local] <hostname> (config-gtt-addrmap-<instance#>)#
IMPORTANT:
The commands or keywords/variables
that are available are dependent on platform type, product version,
and installed license(s).
action
This command configures
the actions that determine the operation of rules of the global
title translation (GTT).
Privilege:
Security Administrator,
Administrator
Syntax
action id id type action_type start-digit value end-digit value
no action id id
id
id uniquely
identifies an action. The id must be an integer from 1 to 15.
type action_type
The following defines
the action rules that will determine how global titles (GT) are translated
to locally understood addresses - in most cases point codes (PC).
The command can be re-issued multiple times to define multiple action
rules.
- constant: Defines
the starting digit in the range of digits in the incoming global
titles that are translated to fixed addresses.
- fixed: Defines
the starting digit in a fixed range of digits used for performing
GTT.
- gt-to-pc: Use
these digits as first of range of global title digits in incoming
message to convert to point code for routing.
- insert-pc: Defines
the rule for inserting destination point code before the incoming GTAI
and change TT, ES and NAI. Use digits of incoming message global
title digits as pc for routing.
- selins:
Selective insertion type to perform GTT.
- strip-pc: Strip
first 6 digits from GTAI if first 6 dgts in stripped point code
are in INT format.
- var-asc:
Use a varaible number of digits, in ascending order, to perform
GTT.
- var-des: Use
a variable number of digits. in descending order. to perform GTT.
start-digit value
value must
be an integer from 0 to 255.
end-digit value
value must
be an integer from 0 to 255.
Usage:
Use this command to
create GTT association rules. Rules can be based on ranges of digits or
modified ranges depending upon the action types included in the commands.
Example
Example
Use the following
command to create a global title translation rule that bases the
translation on a fixed range of digits starting at 23 and ending
at 122:
action id 1 type fixed start-digit 23 end-digit 122
description
This command defines
a descriptive string to facilitate identification of this particular
global title translation (GTT) association. This is used for operator
reference only.
Privilege:
Security Administrator,
Administrator
Syntax
description string
no description
string
Specifies the alphanumeric
string that is stored. must be from 1 through 127 alphanumeric characters.
Strings with spaces must be enclosed in double-quotes. See the example below.
no
Removes the description
string from the current global title translation association configuration.
Usage:
Use this command to
set a description for reference by operators.
Example:
The following command
sets the description to identify a routing domain for messages transmitted
within a national boundary.
description “GTT
database 2”
end
Exits the configuration
mode and returns to the Exec mode.
Privilege:
Security Administrator,
Administrator
Usage:
Change the mode back
to the Exec mode.
exit
Exits the configuration
mode and returns to the Global configuration mode.
Privilege:
Security Administrator,
Administrator
Usage:
Return to the Global
configuration mode.
gt-format
This command creates
an instance of a global title formatting that is applied to the
database in the process of address translation. Once the command
is completed, the system enters global title (GT) format database
configuration mode. The commands for configuration can be found
in the GT Format Configuration Mode chapter in this reference guide.
Privilege:
Security Administrator,
Administrator
Syntax
gt-format format_num
format_num
- 1: Selects GT-format
1 options which include nature-of-address and odd/even. Once
selected, the system enters GT-Format1 configuration mode.
- 2: Selects GT-format2
options which include translation-type.
Once selected, the system enters GT-Format2 configuration mode.
- 3: Selects GT-format3
options which include encoding-scheme, numbering-plan, and translation-type.
Once selected, the system enters GT-Format3 configuration mode.
- 4: Selects GT-format4
options which include encoding-scheme, nature-of-address,
numbering-plan, and translation-type.
Once selected, the system enters GT-Format4 configuration mode.
Usage:
Selects GT format #2
for the database GTT process.
Example
Example
Use this command to
associate the GT format for GTT:
gt-format 2
variant
This command configures
the choice of national standard protocols to associate with the
GTT process databases.
Privilege:
Security Administrator,
Administrator
default
Sets the variant configuration
to itu.
type
The following network
variant national standards-based protocols are possible:
Usage:
Use this command to
select the national standard protocols to associate with the GTT process
database.
Example:
The following command
sets the variant to
ansi:
variant ansi