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All contents are Copyright © 2007 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.
Features
The Cisco Unified SIP Phone 3911 is designed to grow with your organization. Tables 1 through 7
present the features, specifications, and compliance information of the Cisco Unified SIP Phone
3911, Table 8 provides ordering information, and Table 9 lists available optional accessories.
Table 1.
Features and Descriptions
Feature
Hold or Resume key
Lighted Speakerphone key
Lighted Mute key
Lighted Line key
Lighted Conference key
Redial key
Transfer key
Lighted message waiting
indicator
Graphical display
Scroll toggle bar
Network features
Volume control
Single-position foot stand
American Disabilities Act
(ADA) features
Signaling protocol support
Codec support
Configuration options
Voice quality
Table 2.
Security Features
Item
Password
Table 3.
Software and Physical Specifications
Item
Firmware upgrades
Software upgrades
Dimensions (H x W x D)
Weight
Phone casing composition
Description
Places a call on hold when pressed, and resumes the held call when pressed again
Lights when pressed to indicate that the speakerphone is currently being used
Lights when pressed to indicate that the microphone has been muted
Flashes fast when an incoming call is received during the alerting stage of the call; it can be
used to answer the call during the alerting stage, in which case the phone uses the
speakerphone and thus the speakerphone key is lit; when the call is answered the key stays
lit until the call is completed
If pressed when no calls are being made, it places the phone off hook and provides dial tone
through the speaker; both the Line key and the Speakerphone keys are lit
Flashes when a call has been placed on hold; can also be used to retrieve the call from hold
Can be used during a call to conference a third party into the current call; flashes while the
conference call is set up and remains lit after the 3-way call is established
Can be used to redial the last person called
Can be used to transfer a call
Lights when there is new voicemail (also the Voicemail key lights) and stays lit until new
voicemail has been processed by the user; when pressed, connects the user to the
voicemail system
Graphical monochrome display with a resolution of 144 x 32 pixels, providing a scrollable 2-
line intuitive access to Directory Services and configuration
The scroll toggle bar allows easy movement through the displayed information
Cisco Discovery Protocol; IEEE 802.1 p/q tagging and switching
A volume-control toggle to provide easy decibel-level adjustments of the handset, monitor
speaker, and ringer
Optimum display viewing and comfortable use of keys; the foot stand can be removed for
wall mounting with mounting holes located on the base of the phone
Hearing aid-compatible (HAC) handset that meets the requirements set by the ADA; it also
meets ADA HAC requirements for a magnetic coupling to approved hearing aids; the phone
dialing pad also complies with the ADA
Compatible with Cisco CallManager Version 5.0(x) and later, using Session Initiation
Protocol (SIP)
G.711, G.729, and G.729a audio-compression codecs
Provisioning of network parameters through Dynamic Host Configuration Protocol (DHCP)
Voice activity detection (VAD)
Description
Secures access to the phone configuration menu
Description
Firmware upgrades available for download from Cisco.com
Software upgrade supported using a Trivial File Transfer Protocol (TFTP) server
7.87 in. x 7.08 in. x 1.77 in. (200 mm x 180 mm x 45 mm)
1.1 lb (505 g)
Plastic (resin ABS-HB, Resin: SD-0150) in textured dark gray
Data Sheet
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