Τεχνικά Χαρακτηριστικά
PoE : Yes
VoIP Protocols: SCCP
Voice Codecs: G.711u, G.729a
Quality of Service:
IEEE 802.1Q (VLAN), IEEE 802.1p
IP Address Assignment: DHCP
VoIP :
Yes
Network Protocols: TFTP
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The Cisco? Unified Communications system of voice and IP communications products
and applications enables
organizations to communicate more effectively—enabling them to streamline business processes, reach the right
resource the first time and impact the top and bottom line. The Cisco Unified Communications portfolio is an integral part
of the Cisco Business Communications Solution—an integrated solution for organizations of all sizes which also includes
network infrastructure, security, and network management products, wireless connectivity, and a lifecycle services approach,
along with flexible deployment and outsourced management options, end-user and partner financing packages, and third-
party communications applications.
The Cisco Unified IP Phone 7941G is a full-featured enhanced business IP phone that addresses the communication needs of the transaction worker. It provides two programmable backlit line/feature buttons and four interactive soft keys that guide a user through call features and functions, and audio controls for high-quality duplex speakerphone, handset, and headset. A built-in headset port and an integrated Ethernet
switch are standard with the Cisco Unified IP Phone 7941G. The phone also features a best-of-class large, higher-resolution grayscale pixel-based LCD. The display provides features such as date and time, calling party name, calling party number, and digits dialed. The graphic capability of the display allows for the inclusion of higher value, more visibly rich Extensible Markup Language (XML) applications and double-
byte languages.
organizations to communicate more effectively—enabling them to streamline business processes, reach the right
resource the first time and impact the top and bottom line. The Cisco Unified Communications portfolio is an integral part
of the Cisco Business Communications Solution—an integrated solution for organizations of all sizes which also includes
network infrastructure, security, and network management products, wireless connectivity, and a lifecycle services approach,
along with flexible deployment and outsourced management options, end-user and partner financing packages, and third-
party communications applications.
The Cisco Unified IP Phone 7941G is a full-featured enhanced business IP phone that addresses the communication needs of the transaction worker. It provides two programmable backlit line/feature buttons and four interactive soft keys that guide a user through call features and functions, and audio controls for high-quality duplex speakerphone, handset, and headset. A built-in headset port and an integrated Ethernet
switch are standard with the Cisco Unified IP Phone 7941G. The phone also features a best-of-class large, higher-resolution grayscale pixel-based LCD. The display provides features such as date and time, calling party name, calling party number, and digits dialed. The graphic capability of the display allows for the inclusion of higher value, more visibly rich Extensible Markup Language (XML) applications and double-
byte languages.
FEATURES
The Cisco Unified IP Phone 7941G is dynamic, and it is designed to grow with system capabilities. Features will keep pace with new changes through software updates to the phone flash memory. Firmware changes can be downloaded from Cisco Unified CallManager and Cisco.com. No hands-on moves and changes are required with the phone—the user can simply pick up the phone and move to the new location anywhere on your network. The Cisco Unified IP Phone 7941G provides many accessibility methods according to user preference. Table 1 lists features of the phone.
The Cisco Unified IP Phone 7941G is dynamic, and it is designed to grow with system capabilities. Features will keep pace with new changes through software updates to the phone flash memory. Firmware changes can be downloaded from Cisco Unified CallManager and Cisco.com. No hands-on moves and changes are required with the phone—the user can simply pick up the phone and move to the new location anywhere on your network. The Cisco Unified IP Phone 7941G provides many accessibility methods according to user preference. Table 1 lists features of the phone.
Feature Description
Messages The phone offers direct access to voicemail.
Directories The phone identifies incoming messages and categorizes them for users on the screen. This feature
allows users to quickly and effectively return calls using direct dial-back capability. The corporate
directory integrates with the Lightweight Directory Access Protocol Version 3 (LDAP3) standard directory.
Settings The Settings feature key allows the user to adjust display contrast, select background images
(if available), and select from a large number of unique ringer sounds through the User Preference
menu. Network Configuration preferences also can be set up (usually by the system administrator).
Configuration can be either automatically or manually set up for Dynamic Host Control Protocol (DHCP), Trivial File Transfer Protocol (TFTP), Cisco Unified CallManager, and backup Cisco Unified CallManager instances. Other available Settings submenus include Device
Configuration and Security
Configuration.
Services The Cisco Unified IP Phone 7941G allows users to quickly access diverse information such as weather,
stocks, quote of the day, or any Web-based information using XML to provide a portal to an ever-growing
world of applications, features, and information.
Help The online Help feature gives users information about the phone keys, buttons, and features. The pixel
display allows for greater flexibility of features and significantly expands the information viewed when
using features such as Services, Information, Messages, and Directory. For example, the Directory
button can show local and server-based directory information.
Display The phone has a large, high-resolution, graphical 4-bit grayscale display (320 x 222).
Speakerphone, Mute, and Headset
Buttons
The phone offers high-quality speakerphone technology, including easy-to-use speaker On/Off,
Microphone Mute, and Headset buttons. These buttons are lit when active. For added security, the
audible dual tone multifrequency (DTMF) tones are masked when the speakerphone mode is used.
Feature Description
Ethernet Switch The internal 2-port Cisco Ethernet switch allows for a direct connection to a 10/100BASE-T Ethernet
network through an RJ-45 interface with single LAN connectivity for both the phone and a co-located
PC. The system administrator can designate separate VLANs (802.1Q) for the PC and Cisco Unified IP
phones, providing improved security and reliability of voice and data traffic.
Headset Port A dedicated headset port eliminates the need for a separate amplifier when using a headset. This feature
allows the handset to remain in its cradle, making headset use simpler.
Volume Control The convenient Volume Control button on the phone provides for easy, decibel-level adjustments for the
speakerphone, handset, headset, and ringer. The handset is hearing aid-compatible (HAC). Additional
volume control gain can be achieved using an inline handset amplifier such as Walker Equipment W-10
and CE-100 amplifiers.
Adjustable Foot-Stand The phone foot-stand is adjustable from flat to 60 degrees to provide optimum display viewing
and comfortable use of all buttons and keys. The foot-stand is keyed to match standard wall-jack
configurations for wall mounting. Two optional wall-mount brackets are also offered, as noted later
in this document.
Flexible Power Options The Cisco Unified IP Phone 7941G supports Cisco Pre-standard Power over Ethernet (PoE), which
allows powering from any of the Cisco Inline Power-capable blades and boxes. In addition, it supports
IEEE 803.af PoE. The phone can be powered locally with a power supply (part number CP-PWR-CUBE-
3).
Multiple Ring Tones More than 24 user-adjustable ring tones are available.
Americans with Disabilities
Act (ADA) Features
A HAC handset (meets ADA requirements) is available, as well as HAC compliance for magnetic
coupling to approved HAC hearing aids. The dial pad is also ADA-compliant.
Signaling Protocol Support The phone offers Skinny Client Control Protocol (SCCP) support.
Codec Support G.711μ and G.729a audio compression codecs are available.
Quality of Service (QoS) Options The phone supports differentiated services code point (DSCP) and 802.1Q/p standards.
Security The phone supports manufacturing-installed digital certificates, device authentication, and encryption.
Language Support Support for more than 20 languages is built in (depends on Cisco Unified CallManager version).
Configuration Options IP address assignment can be statically configured or configured through the DHCP client.
Voice Quality Comfort-noise generation and voice activity detection (VAD) programming are performed on a system
basis.
Specification Description
Dimensions (H x W x D) 82 x 10.5 x 6 in. (20.32 x 26.67 x 15.24 cm)
Weight 3.5 lb (1.6 kg)
Phone-Casing Composition Polycarbonate acrylonitrile butadiene styerene (ABS) plastic in textured dark gray color with silver bezel
Power Requirements The phone is interoperable with Cisco Pre-standard PoE and with IEEE 802.3af PoE (the phone is a
Class 2 device); 48 VDC is required; it can be supplied locally at the desktop using an optional AC-to-DC
power supply (part number CP-PWR-CUBE-3=). Use of the power supply also requires one of the
corresponding AC country cords listed in Table 6.
TEMPERATURE
Table 3 gives temperature ratings for the Cisco Unified IP Phone 7941G
Table 3. Temperature Ratings for Cisco Unified IP Phone 7941G
Temperature Variable Description
Operating Temperature 32 to 104°F (0 to 40°C)
Relative Humidity 10 to 95% (noncondensing)
Storage Temperature 14 to 140°F (–10 to 60°C)
CERTIFICATIONS
Table 4 gives certifications for the Cisco Unified IP Phone 7941G.
Table 4. Certifications
Certification Description
Regulatory Compliance • CE marking
Safety • Underwriters Laboratories (UL) 60950
• Canadian Standards Association (CSA) C22.2 No. 60950
• IEC 60950
• EN 60950
• AS/NZS 60950
Electromagnetic Compatibility
(EMC)
• Federal Communications Commission (FCC) Part 15 (CFR 47) Class B
• ICES-003 Class B
• EN55022 Class B
• CISPR22 Class B
• AS/NZ 3548 Class B
• VCCI Class B
• EN55024
• EN 50082-1
• EN 61000-3-2
• EN 61000-3-3
Telecom • FCC Part 68 (CFR47)
