Administrator's Guide

I
Issue 5 October 2002 1975555-233-506
I2
The second information channel of DCP.
I2 Interface
A proprietary interface used for the DEFINITY Wireless Business System for the radio-controller circuit
packs. Each interface provides communication between the radio-controller circuit pack and up to two wire-
less fixed bases.
I3 Interface
A proprietary interface used for the DEFINITY Wireless Business System for the cell antenna units. Each
wireless fixed base can communicate to up to four cell antenna units.
IAA
Internal Automatic Answer
IAS
Inter-PBX Attendant Service
ICC
Intercabinet cable or intercarrier cable
ICD
Inbound Call Director
ICDOS
International Customer-Dialed Operator Service
ICHT
Incoming call-handling table
ICI
Incoming call identifier
ICLID
Incoming Call Line Identification
ICM
Inbound Call Management
IDDD
International Direct Distance Dialing
IDF
Intermediate distribution frame
IE
Information element
immediate-start tie trunk
A trunk on which, after making a connection with a distant switching system for an outgoing call, the system
waits a nominal 65 ms before sending the digits of the called number. This allows time for the distant system
to prepare to receive digits. On an incoming call, the system has less than 65 ms to prepare to receive the dig-
its.
IMT
Intermachine trunk
in
Inch