Avaya Communication Manager Administrator's Manual page 1758

Feature Reference
Voice messaging systems
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Class of Restriction (COR)
A high FRL assigned in the COR allows callers to transfer to long-distance numbers.
To prevent toll fraud, assign a low FRL to the AUDIX system ports.
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DCS — Leave Word Calling (external only)
In a DCS network, the called party may be on a different switch node than the calling party. If the
DCS link is down, attempts to store Leave Word Cancel messages are denied and intercept tone is
returned. LWC requests are always denied for principals with AUDIX LWC; in some instances,
the request to cancel LWC may appear to be active when it actually is not.
When the local server or switch communicates with INTUITY AUDIX via mode codes,
INTUITY AUDIX cannot support remote DCS switches.
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Facility Test Call
Unauthorized calls can be placed using the facility test-call access code.
To prevent toll fraud, remove the facility test call access code.
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Leave Word Calling (LWC)
You can have a principal's LWC messages kept by AUDIX. The principal can retrieve a message
by calling AUDIX. The principal cannot retrieve the message using other retrieval methods, but is
notified of its existence by AUDIX.
For other messaging services, you can have AUDIX report the existence of waiting LWC
messages for the principal, but not the message content. The principal can retrieve the message
using other retrieval methods, but is still notified of the existence of AUDIX messages.
If the data link between the system and AUDIX is down, attempts to activate LWC for an
AUDIX-covered principal are denied and reorder tone is returned.
If a caller attempts to cancel a LWC message sent to AUDIX, the caller receives intercept tone if
the called party is on the same server or switch. The caller receives confirmation tone if the called
party is on another server or switch in the DCS network as long as the DCS data link to the called
party's server or switch is operational, even though the message is not actually canceled.
When the local server or switch communicates with INTUITY AUDIX via mode codes,
INTUITY AUDIX does not accept or store LWC messages in user mailboxes.
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Ringback Queueing
Ringback Queueing does not apply to AUDIX calls. On direct calls to a remote AUDIX, if all
trunks to the host AUDIX are busy, busy tone is returned. On coverage calls, if all trunks are busy,
AUDIX is treated as a busy coverage point. If there are coverage points after AUDIX, then the
call terminates at those points.
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Single-Digit Dialing and Mixed-Station Numbering
AUDIX is designed for use with a Uniform Dial Plan. It supports only one extension length (3-,
4-, or 5-digit) that is used by AUDIX subscribers. Single-Digit and Mixed Station Numbering
cannot be used. However, nothing prohibits connecting a media server or switch to AUDIX that
provides these features, as long as all AUDIX subscribers have the same extension length.
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Temporary Bridged Appearance
Stations that normally have a temporary bridged appearance with their coverage point do not have
that appearance if the coverage point is AUDIX.
1758 Administrator's Guide for Avaya Communication Manager
November 2003