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II-Digits Routing
Issue 4 September 1995
7-5
II-Digits Routing
II-digits routing allows you to make routing decision based on the type of the
originating line. In this way, calls from pay phones, cellular phones, or motel
phones for example can receive unique routing. See "II-Digits Routing Example"
later in this section for more information.
II-digits (Information Indicator digits) is a 2-digit string provided for an incoming
call by ISDN PRI. II-digits delivery is a generally available ISDN PRI AT&T
Network service. This service is bundled with ANI delivery and tariffed under the
MEGACOM 800 ® and MultiQuest 800 ® INFO-2 feature to provide information
about the call’s origination. II-digits indicate the type of originating line.
II-digits routing can be used for example to:
■ Help detect fraudulent orders for catalog sales, travel reservations, money
transfers, traveler’s checks, and so on.
■ Assign priority or special treatment to calls placed from pay phones,
cellular phones, or other types of lines. For example, special priority could
be given by an automobile emergency road service to calls placed from
pay phones.
■ Detect calls placed from pay phones when it is the intention of the caller to
avoid being tracked by collection agencies or dispatching services.
■ Convey the type of originating line on the agent display by routing different
type calls to different VDNs.
The ii-digits routing string can only contain 2 characters. The string can contain
either the “+” or “?” wildcard. Leading zeros are significant. The ii-digits value
“02” associated with a call will not match the digit string “2” in a vector step.
As with ANI routing and collected digit routing, ii-routing digits can be compared
against entries in a Vector Routing Table.
The following calls will have ii-digits values associated with them.
■ Incoming ISDN PRI calls that include ii-digits
■ Incoming ISDN PRI Tie Trunk DCS or non-DCS calls that include ii-digits.
Note that since tandeming of ii-digits is only supported if the trunk facilities
used are ISDN PRI, traditional DCS will not support ii-digits transport but
DCS Plus (DCS over PRI) will.
When a call is returned to vector processing as a result of the VDN Return
Destination feature, the ii-digits are preserved.
When a call is transferred to a VDN the following is true:
■ If the transfer is completed before the call reaches the ii-digits conditional,
the ii-digits value of the originator of the call is used.