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 t he
originating line. In this way, calls from pay phones, cellular pho nes, or mot el
phones for example can receive unique routing. See "II-Digits Routin g Example"
later in this section for mo re inform at ion.
II-digits (Information Indicator digits) is a 2-d i git 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 un der the
MEGACOM 800 ® and MultiQuest 800 ® INFO-2 feat ure 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 cat alog 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 examp le, sp ecial 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 t o
avoid being tracked by collection agencies or dispatching services.
■Convey the type of originating line on the a gent display by routi ng different
type calls to di fferent VDNs.
The ii-digits routing string can only contain 2 characters. The string can contai n
either the “ +” or “?” wildcard. Leading zeros are si gnificant. The ii-di gits 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 d ig i t s can be comp ared
against entries in a Vector Routing Table.
The following calls will have ii-d igits values associated with them.
■Incoming ISDN PRI calls that include ii-digits
■Incomin g ISDN PRI Tie Trunk DCS or non-DCS calls that include ii-digits.
Note that since t a ndeming o f 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 compl eted before the c all reaches the ii-digits conditional,
the ii-digits value of the originator of the call is used.