Configuring The Phone To Support Call Waiting - Cisco 6921 Administration Manual

Chapter 5 Configuring Features, Templates, Services, and Users
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Configuring the Phone to Support Call Waiting

The Cisco Unified IP phones 6921, 6941, and 6961 support one call per line. Cisco Unified CM sets the
Maximum Number of Calls (MNC) per line, and Busy Trigger (BT) per line attributes to 2 and 1
respectively and these fields can not be changed, As a result, the line appears to be busy to a second
incoming call when there is an active call present on the line. Cisco Unified Communications Manager
forwards the second incoming call based on the Call Forward Busy settings for the line. The user, who
is on a call will not be notified of an incoming call. Without further configurations, the phone does not
support call waiting. However, you can configure the phone to support call waiting and receive the call
by configuring an additional line on an unassigned programmable button. When the user receives an
incoming call while connected on a call, the phone plays the call waiting tone (single beep), displays a
caller ID notification and rolls the incoming call over to the other line.
To configure call waiting on the Cisco Unified IP Phone 6921, 6941, and 6961:
1.
2.
3.
Note You will need to assign a programmable button for each listed directory number.
Cisco Unified IP Phone 6921, 6941, and 6961 Administration Guide for Cisco Unified Communications Manager 8.0 (SCCP)
OL-20851-01
True—Option displays on the User Options web pages (default except for Show Ring Settings,
Show Line Text Label, and Show Call Forwarding).
False—Option does not display on the User Options web pages.
Show All Settings—All call forward settings display on the User Options web pages (default).
Hide All Settings—No call forward settings display on the User Options web pages.
Show Only Call Forward All—Only call forward all calls displays on the User Options web pages.
On an unassigned programmable button on the phone, configure an additional line by either
assigning the same directory number on a different partition or by assigned a different directory
number.
a. When you configure the second line by assigning the same directory number on more than one
line, the DN on the second line must be on a different partition. Each time that you assign the
same DN to another line, you must create a unique partition and assign the directory to that
partition.
When you configure the second line by assigning a different directory number, you must use a
b.
previously unassigned and unlisted number.
The second line is an intermediary between the original line (your listed directory number) and your
call busy destination, such as your voice messaging system.
On the original line, configure the destination for the Call Forward Busy Internal and Call Forward
Busy External settings to your second line and the No Answer Ring Duration to a minimum of 10
seconds.
On the second line, configure the standard Call Forward All settings that you would normally use
for the original line and set the No Answer Ring Duration to a minimum of 10 seconds.
Configuring the Phone to Support Call Waiting
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