Cisco 7821 Administration Manual page 69

Feature
Resume
Conference
Conference List
Transfer
Transfer to Active Calls (Direct
Transfer)
Auto Answer
Call Waiting
Caller ID
Unified Session Presentation
Voicemail
Call Forward All
Speed Dial
To Voicemail (iDivert)
Line Filters
Cisco IP Phone 7821, 7841, and 7861 Administration Guide for Cisco Unified Communications Manager 10.0 (SIP)
Supported
Yes
Yes
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Partial
Surviveable Remote Site Telephony
Notes
Conference is the only feature
supported due to other feature
limitations.
Voicemail will not be synchronized
with other users in the Cisco
Unified Communications Manager
cluster.
Forward state is only available on
the phone that sets the forward
because there are no shared line
appearances in SRST mode. The
Call Forward All settings are not
preserved on failover to SRST from
the Cisco Unified Communications
Manager, or from SRST fail-back
to the Communications Manager.
Any original Call Forward All still
active on the Communications
Manager should be indicated when
the device reconnects to the
Communications Manager after
failover.
The iDivert softkey does not
display.
Lines are supported but cannot be
shared.
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