The Lotus Domino Unified Communication Services (DUCS) client is a
Cisco Unity specific client that is used to enable proper voice communication
between the Domino server, Lotus Notes clients, and Cisco Unity 4.0.
This document describes the workaround for the error message,
"The Domino Unified Communications Client must be
installed," that appears when the user tries to play back a message
through Lotus Notes.
Also, refer to
Unity 7.0 Error: "8004010f /web/common/include/saconstinc.asp,- 122" for
troubleshooting similar issues in Cisco Unity 7.0(2) integrated with IBM Lotus
Cisco recommends that you have knowledge of Cisco Unity 4.x for
The information in this document is based on Cisco Unity 4.0 for
The information in this document was created from the devices in a
specific lab environment. All of the devices used in this document started with
a cleared (default) configuration. If your network is live, make sure that you
understand the potential impact of any command.
Technical Tips Conventions for more information on document
When a user receives a new voice mail, the message appears in Lotus
Notes. However, when the user tries to play back the message through Lotus
Notes, a dialog box displays this error message: "The Domino Unified
Communications Client must be installed." This behavior is observed
when the user installs the DUCS client on their PCs.
csClient is the client portion of DUCS that enable Lotus Notes to
interact with voicemail. The process to install csClient includes these
Installation of the files needed for the client to run (DLLs and so
The addition of several lines to the user's notes.ini file so that
when Louts Notes is started, it will load the DUCS
When an installation is done on a PC that has Notes installed in
multi-user mode, step 1 happens normally. Step 2 acts on the system's
generic notes.ini file. This file is located in the
Documents and Settings\All Users folder and, for the
purpose of DUCS, is not actually used. Therefore, when a user starts DUCS and
tries to access a voicemail message, DUCS is not likely to work properly.
The workaround for this issue is to add to each user's notes.ini file
(located in Documents and Settings\<Username>) the
lines required by DUCS.
The lines required by DUCS are: