Cisco Cisco ASR 5000
SGSN Service Configuration Procedures
▀ Configuring GTT
▄ SGSN Administration Guide, StarOS Release 18
Configuring GTT
Global Title Translation (GTT) configuration consists of defining GTT associations, defining GTT address maps, and
referring to these in an SCCP network configuration. The GTT Associations define GTT rules applicable to a specific
GT format. The GTT Address Maps define a global title address to be routed to using a specific routing indicator. These
are configured in the global configuration mode and are available to all SCCP networks configured in the system.
referring to these in an SCCP network configuration. The GTT Associations define GTT rules applicable to a specific
GT format. The GTT Address Maps define a global title address to be routed to using a specific routing indicator. These
are configured in the global configuration mode and are available to all SCCP networks configured in the system.
Step 1
In global configuration mode, create a GTT association with a unique name.
Step 2
In GTT association configuration mode, define the type of digit analysis to be used; “fixed” is the generally used digit
analysis and if specified, also define the length of the digits to be analyzed. This is represented using action IDs.
analysis and if specified, also define the length of the digits to be analyzed. This is represented using action IDs.
Step 3
In GTT association configuration mode, define the GT format (1 to 4) for which the analysis needs to be applied.
Step 4
In the GT format configuration mode, specify the numbering plan and the nature of address to be used. Note that a
separate GTT association needs to be created for a combination of numbering plan, nature of address, and GT format.
separate GTT association needs to be created for a combination of numbering plan, nature of address, and GT format.
Important:
There are many different ways to configure a GTT association and the needs of every
network are different. Please refer to the Global Title Translation Association Configuration Mode chapter in
the Command Line Interface Reference for the commands available.
the Command Line Interface Reference for the commands available.
Step 5
In global configuration mode, create a GTT address map, with a unique name, for a specific global title address.
Step 6
In GTT address map configuration mode, associate a specific GTT association and the action ID.
Step 7
In GTT address map configuration mode, define the routing indicator to be included in the Called-party Address in the
out-going SCCP message along with the destination of the message using the option out-address.
out-going SCCP message along with the destination of the message using the option out-address.
Important:
There are many different ways to configure a GTT Address Map and the needs of every
network are different. Please refer to the GTT Address Map Configuration Mode chapter in the Command
Line Interface Reference for the commands available.
Line Interface Reference for the commands available.
Example Configuration
configure
global-title-translation association instance <inst#>
action id <id> type <action_type> start-digit <num> end-digit <num>
gt-format <format_num>
exit
global-title-translation address-map instance <inst#>
associate gtt-association <assoc#> action id <id>
gt-address <gt_addr_prefix>