Universal Call ID
Issue 1.0 May 2003
239
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.
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
UCID transmission
Sender
Receiver
Connection
UCID contained in
Switch
Switch
ISDN (BRI or PRI) trunks using
QSIG service protocol
codeset 0 Facility IE as
manufacturer specific information
(MSI) IE
1
ISDN (BRI or PRI) trunks using
Shared UUI service protocol
codeset 0 shared user-to-user
information (UUI) IE
1
Switch INTUITY
Conversant
ASAI
various ASAI messages
INTUITY
Conversant
Switch ISDN-PRI
codeset 0 shared UUI IE
1
Switch
CMS
X.25
SETUP5 CMS message
Switch
CTI adjunct
ASAI
various ASAI messages
1. Refer to
Information Forwarding (Category A only)
on page 163.
Содержание Communication Manager Contact Center
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