How Are Ucids Tracked - Avaya Communication Manager Contact Center Manual

When are UCIDs created?
Once the communication server or the Conversant is administered to create UCIDs, these
products assign a UCID to each call. For incoming calls over ISDN trunks, the
communication server determines whether or not the call already has a UCID. If so, the
communication server preserves the existing UCID and does not create a new one. If the
call does not have a UCID, the communication server creates one when call processing
begins. For incoming calls over non-ISDN trunks, the communication server creates a
UCID for the call because non-ISDN trunks do not support the transmission of UCID.
For outgoing calls, the communication server creates a UCID when the caller goes off-
hook.
How are UCIDs transmitted?
How communication server transmits UCIDs depends on the sending and receiving
equipment. The following table summarizes UCID transmission features.
UCID transmission
Sender Receiver
Switch Switch
Switch INTUITY
Conversant
INTUITY Switch
Conversant
Switch CMS
Switch CTI adjunct
1. Refer to Information Forwarding (Category A only)

How are UCIDs tracked?

The way a network maintains and tracks a UCID depends on the call path. To illustrate
UCID transport throughout a call's life cycle, this section describes several call scenarios:
Station-to-station Calls
Incoming Trunk Calls
Outgoing Trunk Calls
Simple Transfer or Conference
Complex Transfer and Conference
Connection
ISDN (BRI or PRI) trunks using
QSIG service protocol
ISDN (BRI or PRI) trunks using
Shared UUI service protocol
ASAI
ISDN-PRI
X.25
ASAI
on page 163.
UCID contained in
codeset 0 Facility IE as
manufacturer specific information
1
(MSI) IE
codeset 0 shared user-to-user
information (UUI) IE
various ASAI messages
codeset 0 shared UUI IE
SETUP5 CMS message
various ASAI messages
Issue 1.0 May 2003
Universal Call ID
1
1
239