Datasheet

Data Sheet
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Americans with Disabilities
Act (ADA) features
A HAC handset (meeting 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 is supported with Cisco Unified CallManager 3.3 or later, and Cisco Unified
CallManager Express 3.2(1) and later. Both SCCP and SIP signaling protocols are
supported by the phone when used with a Cisco Call Control agent.
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. 802.1X link layer authentication is also provided, requires 8.2(1) or later phone
firmware.
Language support Support for more than 20 languages is built in (depends on Cisco Unified CallManager
software 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 systems basis. RTCP streams are generated by the phone to provide voice quality metrics
(requires 8.2(1) phone firmware or later).
Table 2. Security Features
Item Description
Certificates Phones are shipped with factory-installed X.509v3 certificates. There is also an option of
installing and removing certificates at the customer's site.
Device Authentication and
signaling encryption
Transport layer security (TLS) with AES-128 encryption is offered when using Cisco Unified
CallManager 4.0 or later and Cisco Unified CallManager Express Version 4.0(2) or later.
Media encryption Secure Real-Time Transport Protocol (SRTP) with AES-128 encryption is offered when
using Cisco Unified CallManager 4.0 or later and Cisco Unified CallManager Express
Version 4.0(2) or later.
802.1X Link Layer
Authentication
Phones running the 8.2(1) firmware load, or later, can utilize the 802.1X Link Layer
Authentication protocol to connect to a Catalyst® switch implementing this security
mechanism. A single downstream device, connected to the PC port, may also implement
802.1X Link Layer Authentication and the phone will pass through the EAPoL requests on a
proxy basis.
Table 3. Software and Physical Specifications
Item Description
Firmware upgrades Firmware upgrade supported using a TFTP server
Dimensions (H x W x D) 9.1 x 10.5 x 6 in. (23.1 x 26.67 x 15.24 cm)
Weight 3.6 lb (1.8 kg)
Phone casing composition
Polycarbonate acrylonitrile butadiene styerene (ABS) plastic in textured dark gray color with
silver bezel
Table 4. Power Options
Item Description
IEEE 802.3af PoE Can receive power from IEEE 802.3af-compliant data switches (Class III)
Cisco Pre-Standard PoE
The 7970 IP phone can receive power from a Cisco Prestandard PoE switch, and will
operate with reduced brightness, through CDP negotiation, in order not to exceed the
maximum power available
Local power
Powered locally with a power adapter (CP-PWR-CUBE-3=) along with one of the power
cords listed in Table 5
Table 5. AC Region and Country-Specific Power Cords
Part Number Description