Cisco Ip Phone 6800 Series Multiplatform Phones Administration Guide - Cisco IP Phone 6851 Administration Manual

Feature
HTTP Download
HTTPS for Phone Services
Improve Caller Name and Number
Display
Jitter Buffer
Join Across Lines
Join
Message Waiting
Message Waiting Indicator
Minimum Ring Volume
Missed Call Logging
Multicasting Paging
Multiple Calls Per Line Appearance
Music On Hold
Mute
Description and More Information
Enhances the file download process to the phone to use HTTP by default. If the HTTP
download fails, the phone reverts to using the TFTP download.
Increases security by requiring communication using HTTPS.
When the web is in HTTPS mode, the phone is an HTTPS server.
Note
Improves the display of caller names and numbers. If the Caller Name is known, then
the Caller Number is displayed instead of Unknown.
The Jitter Buffer feature handles jitter from 10 milliseconds (ms) to 1000 ms for both
audio and video streams.
Allows users to combine calls that are on multiple phone lines to create a conference
call.
Some JTAPI/TAPI applications are not compatible with the Join and Direct Transfer
feature implementation on the Cisco IP Phone and you may need to configure the Join
and Direct Transfer Policy to disable join and direct transfer on the same line or possibly
across lines.
Allows users to combine two calls that are on one line to create a conference call and
remain on the call.
Defines directory numbers for message waiting on and off indicators. A directly-connected
voice-message system uses the specified directory number to set or to clear a message
waiting indication for a particular Cisco IP Phone.
A light on the handset that indicates that a user has one or more new voice messages.
Sets a minimum ringer volume level for an IP phone.
Allows a user to specify whether missed calls will be logged in the missed calls directory
for a given line appearance.
Enables users to page some or all phones. If the phone is on an active call while a group
page starts, the incoming page is ignored.
Each line can support multiple calls. By default, the phone supports two active calls per
line, and a maximum of ten active calls per line. Only one call can be connected at any
time; other calls are automatically placed on hold.
The system allows you to configure maximum calls/busy trigger not more than 10/6.
Any configuration more than 10/6 is not officially supported.
Plays music while callers are on hold.
Mutes the handset or headset microphone.

Cisco IP Phone 6800 Series Multiplatform Phones Administration Guide

Telephony Features for Cisco IP Phone
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