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General| Protocols | SIP, SCCP |
|---|---|
| Resolution | 640 x 480 pixels |
| Audio | Wideband audio |
| Ethernet | 10/100/1000 |
| USB | Yes |
| Power | PoE 802.3af |
| Speakerphone | Full-duplex |
| Headset Jack | Yes |
| Codec Support | G.711a, G.711µ, G.722, G.729a, G.729ab, iLBC |
| Expansion Module Support | Yes, up to 3 Cisco Unified IP Phone Expansion Module |
Describes the operational aspects of the IP Phone 9951, including ports and connections.
Identifies and explains the controls and buttons on the Cisco 9951 IP Phone.
Details the steps for installing the phone's footstand.
Guides the physical connection of the IP phone to the network and power.
Explains how to configure VPN settings on the IP phone.
Instructions on how to adjust the phone screen's brightness level.
Guides users on changing the ringtone and adjusting volume.
Steps to select and apply a wallpaper to the IP phone display.
Details the various methods for initiating a phone call.
Explains the different ways to answer an incoming call.
Describes how to terminate an active call.
How to place an active call on hold and resume it.
Managing incoming calls while on an existing call.
Steps for transferring calls to another party.
How to redial the last number called.
Setting up call forwarding to different destinations.
Guide to initiating and managing conference calls.
How to answer calls intended for other users in a group.
Steps to activate the iVoiceMail Plus service on the IP phone.
How to access and listen to voicemail messages.
Instructions for accessing voicemail remotely.
How to retrieve voicemail messages using Microsoft Outlook.
Steps to activate the eVoiceMail service on the IP phone.
How to access and listen to eVoiceMail messages.
Instructions for accessing eVoiceMail remotely.
How to view call history and dial numbers from the phone log.
Steps to remove entries from the call history log.
How to change the password for the Cloud Voice S services.
Instructions on changing the Personal Identification Number (PIN) for the IP phone.
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