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7-48 Feature interaction
Datafill
The datafill settings for UUI signaling include:
Allow/disallow feature
Both CAUUI and MAUUI signaling setup are controlled by fields of table
LTDATA, as follows:
Office parameters
The following office parameters control UUI signaling:
Call tracing and billing—NCID
A unique network call identifier (NCID) generates at the switch and is
passed along to the platforms that participate in the call across the MWC
network.
The unique NCID enables
297-2521-106 Standard 23.01 March 2001
CAUUI2—controls call-associated user-to-user signaling at setup
CAUUI3—controls call-associated user-to-user signaling after setup
MAUUI—controls preferred message-associated user-to-user signaling
MAUUI and U1RQ—controls required message-associated user-to-user
signaling
MAX_USER_INFO—limits the number of UUI messages that can be
transported for the life of the call. If a request for invocation of either
CAUUI2 or CAUUI3 is received at the switch where the datafill value is
equal to zero, the request is rejected with a Facility Reject message and a
cause of "facility rejected."
— value range—0-65535
— default value—25
UUS_BURST—controls settings for the maximum number of messages
that may be sent during a 10-second period. (After this period of time, a
state of congestion is entered.)
— value range—2-127
— default value—16
NUMBER_UUS_EXT_BLOCKS—determines the available number of
user-to-user service extension blocks
— value range—0-32767
— default value—6000
the ability to trace calls through the network
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