NotesSupportedFeature
YesResume
3 way only and local mixing only.YesConference
NoConference List
Consult only.YesTransfer
NoTransfer to Active Calls (Direct
Transfer)
YesAuto Answer
YesCall Waiting
YesCaller ID
Conference is the only feature supported due
to other feature limitations.
YesUnified Session Presentation
Voicemail will not be synchronized with
other users in the Cisco Unified
Communications Manager cluster.
YesVoicemail
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.
YesCall Forward All
YesSpeed Dial
The iDivert softkey does not display.NoTo Voicemail (iDivert)
Lines are supported but cannot be shared.PartialLine Filters
The Park softkey does not display.NoPark Monitoring
Message count badges do not appear on the
phone screen.
Only the Message Waiting icon displays.
NoEnhanced Message Waiting
Indication
Cisco IP Phone 7800 Series Administration Guide for Cisco Unified Communications Manager
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Surviveable Remote Site Telephony