Cisco IP Phone 6851

Description and More InformationFeature
Makes it easier for end users to identify transferred calls by displaying the original caller’s
phone number. The call appears as an Alert Call followed by the caller’s telephone
number.
No Alert Name
Allows a user to dial a number without going off hook. The user can then either pick up
the handset or press Dial.
Onhook Dialing
Users can set up the speed-dial feature to reach destinations that require Forced
Authorization Code (FAC) or Client Matter Code (CMC), dialing pauses, and additional
digits (such as a user extension, a meeting access code, or a voicemail password) without
manual intervention. When the user presses the speed dial, the phone establishes the call
to the specified DN and sends the specified FAC, CMC, and DTMF digits to the
destination and inserts the necessary dialing pauses.
Pause in Speed Dial
Allows the user to dial E.164 numbers prefixed with a plus (+) sign.
To dial the + sign, the user needs to press and hold the star (*) key for at least 1 second.
This applies to dialing the first digit for an on-hook (including edit mode) or off-hook
call.
Plus Dialing
Allows the phone to negotiate power using Link Level Endpoint Discovery Protocol
(LLDP) and Cisco Discovery Protocol (CDP).
Power Negotiation over LLDP
Submits phone logs or reports problems to an administrator.Problem Reporting Tool
You can assign features, such as New Call, Call Back, and Forward All to line buttons.Programmable Feature Buttons
Allows users to call the most recently dialed phone number by pressing a button or the
Redial softkey.
Redial
Allows a service provider to customize the phone remotely. There is no need for either
the service provider to physically touch the phone or a user to configure the phone. The
service provider can work with a sales engineer at the time of ordering to set this up.
Remote Customization (RC)
Identifies ring type used for a line when a phone has another active call.Ringtone Setting
Ensures that held calls are not dropped by the gateway. The gateway checks the status
of the RTCP port to determine if a call is active or not. By keeping the phone port open,
the gateway will not end held calls.
RTCP Hold For SIP
Enables administrators to quickly and easily gather debug information from phones.
This feature uses SSH to remotely access each IP phone. SSH must be enabled on each
phone for this feature to function.
Serviceability for SIP Endpoints
Allows a user with multiple phones to share the same phone number or allows a user to
share a phone number with a coworker.
Shared Line
Cisco IP Phone 6800 Series Multiplatform Phones Administration Guide
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Telephony Features for Cisco IP Phone