Cisco BTS 10200 Softswitch Manual page 131

Chapter 2 Routing
Intermediate or Donor Switch Performs ACQ for Another Switch or Network
The Cisco BTS 10200 Softswitch may be required to perform ACQ for another switch that does not have
that capability. For example, an international gateway exchange may not have access to the local country
LNP database, so the ACQ is performed at the point of interconnect (POI) by the intermediate switch.
To configure the BTS to perform ACQ on incoming calls from a particular trunk group, set the
ALL-CALL-QUERY=Y in the LNP Profile table and the token PERFORM-LNP-QUERY=Y in the
incoming Trunk Group table.
A query will then be performed on each call received from that trunk group unless not allowed by the
destination used for a particular call. For more information, see the
section.
Destination Table ACQ Controls
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Note
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ACQ and Call Forwarding
A call to a BTS subscriber may be forwarded to another number, for example, in the case of CFU, CFB,
or CFNA. For the purposes of LNP, the forwarded call is considered a new subscriber origination, and
the switch where the forwarding occurs is the originating switch. If ACQ is configured, a query is
performed on the forwarding leg using the forwarded-to DN.
OL-8001-10
ACQ-LNP-QUERY=NA in the Destination table is used when an ACQ is not applicable, for
example, when the country does not support LNP or ACQ or when the operator does not want the
Destination table to have any affect on LNP queries as configured in the LNP Profile and Trunk
Group tables.
ACQ-LNP-QUERY=LNP-QUERY-BASED-ON-CALL-TYPE in the Destination table is provided
to allow or prevent ACQ queries for certain call types. For example, LNP queries should not be
performed for emergency calls. When
ACQ-LNP-QUERY=LNP-QUERY-BASED-ON-CALL-TYPE, in the Destination table, the value of
the LNP-QUERY token in the Call Type Profile table determines whether a query will be allowed
for a given call type (and the value of the PERFORM-LNP-QUERY in the Trunk Group table, if the
call is an incoming trunk group).
For call types EMG, FIRE, POLICE, or AMBULANCE an ACQ query will not be performed
under any circumstances.
ACQ-LNP-QUERY=PERFORM-LNP-QUERY and ACQ-LNP-QUERY=NO-LNP-QUERY—ACQ
queries are performed for a subset of calls based on the called number prefix. To support this
requirement, ALL-CALLS-QUERY=Y in the LNP Profile table. In addition, calls to the specific
prefixes requiring ACQ have dial-plan entries pointing to destinations with ACQ-LNP-QUERY , in
the Destination table, set to PERFORM-LNP-QUERY. For calls to these ACQ destinations, if the
call originates on a trunk, then the Trunk Group table PERFORM-LNP-QUERY also must be set to
'Y' for a query to be performed.
ACQ-LNP-QUERY=NO-LNP-QUERY—There is a requirement to block queries on outgoing
carrier calls. The value ACQ-LNP-QUERY=NO-LNP-QUERY, in the Destination table, indicates
that a query will not be performed on any call to this destination.
Destination Table ACQ Controls
Cisco BTS 10200 Softswitch Dial Plan Guide, Release 4.5.x
Routing Types
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