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Feature Reference
Separation of Bearer and Signaling
1666 Administrator’s Guide for Avaya Communication Manager
November 2003
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User information received on an SBS signaling call by an SBS tandem node, or received
on a non-SBS trunk by an SBS interworking node, will be sent on the SBS signaling call,
per current tandeming or interworking procedures on QSIG trunks.
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Temporary Signaling Connection (TSC) messages can be sent over an SBS trunk.
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Look Ahead Routing can be used with both SBS signaling and SBS bearer calls, if such
calls are launched on ISDN trunks.
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In regions where Feature Plus (F+) is offered, SBS calls can use the Feature Plus
pseudo-DID functionality to avoid having to obtain DID/DDI numbers from a Service
Provider. SBS Extensions would still need to be administered at the SBS terminating
node, but these numbers would not need to correspond with real DID/DDI numbers. CPN
Prefix administration at the SBS terminating node would need to map the SBS extension
to a number that would be a national complete number (except that the SBS extension
portion would not be recognized by the PSTN). ARS at the SBS originating node would
need to route this number to a route pattern preference that supports Feature Plus. The
"No. Dgts SubAddress" administration for this preference would need to indicate the
length of the SBS extension at the SBS terminating node (this number of digits will be
extracted from right to left and sent in the Calling Party Subaddress Information Element).
Administration for this preference would also need to delete the SBS extension digits and
insert the SBS terminating node’s Listed Directory Number extension in its place. The
SBS bearer call would thus be routed to the LDN at the SBS terminating node and Feature
Plus functionality at the SBS terminating node would then route the call to the SBS
extension (passed in the Subaddress IE), instead of to the attendant. Multiple route
patterns would be needed at the SBS originating node if the SBS terminating node uses
SBS extensions of various lengths.
NOTE:
SBS extensions to be used with Feature Plus cannot be longer than five digits, as
Feature Plus is not included in Dial Plan Expansion.
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QSIG MSI messages will be sent in the SBS Signaling link. Any that are in the SBS bearer
call will be ignored.
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QSIG Call Completion will work with SBS calls.
NOTE:
Both the original call, and the "call-back call" will incur separate SBS delays if using SBS
trunks.
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QSIG Call Transfer will work with SBS calls.
NOTE:
Both the original call and the second call, to the transferred-to party, will incur separate
SBS delays if using SBS trunks.
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QSIG Diversion (forward switch and reroute) will work with SBS calls.
NOTE:
Both the original call and the second call, to the forwarded-to party, will incur separate
SBS delays if using SBS trunks.