Cisco CVA120 Series Cable Voice Adapters

CVA 120 Series Cable Voice Adapters


Data Sheet

Cisco CVA120 Series Cable Voice Adapters
Providing flexible IP telephony for your evolving multi-service network

The Cisco CVA120 Series cable voice adapters are the ideal solution for cable service providers deploying integrated voice and data services to the home office market. As a primary- or second-line voice-over-cable customer premises equipment (CPE) device with basic data and network security capabilities, the Cisco CVA120 Series offers the quality, flexibility, reliability, and stability service providers need to profitably serve this market.

The Cisco CVA120 Series consists of cable modems designed to provide voice and high-speed data services over the same IP-based cable infrastructure for maximum efficiency and minimal management. In a landscape of evolving standards, it ensures investment protection with support for multiple voice protocols, allowing service providers to deploy voice services with confidence. With Cisco IOS® software at its core and with both DOCSIS and EuroDOCSIS versions, the Cisco CVA120 Series are the only multiprotocol voice cable modem that provides a migration path to the latest standards as they are developed.


  • Voice over IP service
  • High-speed Internet access
  • Home office voice and data services

Product Features

Feature Benefit
Value-Added Data Features
  • Ethernet Port
  • DOCSIS/EuroDOCSIS Bridge Mode or IP Routing Mode
  • Separate Routed Ethernet and Universal Serial Bus (USB)
  • Cisco Easy IP (NAT/PAT, multi-NAT, and DHCP server)
  • Allows multiple users and supports advanced data capabilities such as Network Address Translation (NAT)
  • Offers a range of data services from basic to advanced with one CPE device
  • Supports more advanced network configurations and allows two revenue-generating services with investment in one CPE device
  • Preserves precious and finite public address space and provides basic security for home and small offices
Toll-Quality Voice
  • Voice-Enabled Cable Modem
  • Up to Four Voice Ports
  • H.323, Simple Gateway Control Protocol (SGCP), and Media Gateway Control Protocol (MGCP) Support
  • Broad CODEC Support (G.711, G.723.1, G.726, G.728, G.729, G.729a)
  • Custom-Calling and CLASS Features
  • Fax Machine and Analog Modem Support
  • Optional Battery Backup
  • Expands revenue potential beyond basic Internet access
  • Scalability to offer a range of telephony services with one CPE device
  • Flexibility to adapt to changing standards and architecture as solution scales with growing voice penetration
  • Provides compatible solution for balancing network bandwidth requirements and voice quality
  • Compete effectively with incumbent service provider by providing the features subscribers expect from primary-line telephony
  • Compete effectively with incumbent service provider by supporting all required home and small office equipment support
  • Allows telephony service to remain available when power is disrupted from local premise
Easy Setup and Installation
  • USB Port
  • No Local Console Port
  • Consumer-Oriented Form Factor
  • Plug-and-play installation for end users and also allows connection to network without the expense and installation of a network interface card
  • Elimination of local console port simplifies end-user installation, reduces risk of hackers, and ensures configuration will be maintained by service provider
  • Leading-edge design allows horizontal or vertical orientation and can be mounted on a wall
Cisco IOS Software Manageability
  • Cisco IOS Operating Environment
  • SNMP, Telnet, and FTP Support
  • Common operating environment simplifies training and leverages existing knowledge
  • Allows centralized administration and management and remote diagnosis of problems
Proven Design Platform
  • Common Design Platform
  • Cisco IOS Operating Environment
  • Leverages most design elements from the award-winning, field proven, Cisco uBR924
  • Common software used for all Cisco cable CPE devices provides a reliable and proven operating environment as well as investment protection through ongoing enhancement of the operating system

Technical Specifications

Physical Specifications
Dimensions and Weight
  • Dimensions (H x W x D)
  • Weight (Cisco CVA124)
  • Weight (Power Adapter)/UPS)
  • 1.6 in x 6.75 x 8.25
  • 1.5 lb
  • 0.75 lb/8 lb
  • Power Consumption
  • Power Supply Rating
  • DC Input Voltage
  • 6 to 15W (idle-maximum)
  • 20W
  • +5 V, -30V, -56V
Physical Interfaces
  • Ethernet
  • USB
  • CATV
  • Telephone
  • RJ-45, 10BaseT
  • Series-B Receptacle
  • Female F-Connector
  • RJ-11, FXS
  • Cable status
  • Ethernet link/data
  • USB link/data
  • Operator-defined
Environmental Specifications
  • Operating temperature
  • Nonoperating temperature
  • Relative humidity
  • (0° to 40° C)
  • (-30° to +65° C)
  • 5% to 95% noncondensing

Regulatory and Standards Compliance
  • CSA 950-95, Third Edition
  • IEC 950: Second Edition with Amendments 1, 2, 3, and 4
  • EN60950:1992 with Amendments 1, 2, 3, 4, and 11
  • AS/NZS 3260: 1996 with Amendments 1, 2, 3, and 4
  • TS001:1997


  • CFR 47 Part 15 Class B
  • EN55022 Class B
  • VCCI Class B
  • AS/NRZ 3548:1992 Class B
  • ICES-003, Issue 2, Class B, April 1997


  • Harmonics
  • Flicker
  • Electrostatic discharge
  • Radiated immunity
  • Electrical fast transients
  • Surge immunity
  • Conducted immunity
  • Voltage dips/fluctuations
  • EN61000-3-2
  • EN61000-3-3
  • EN61000-4-2
  • EN61000-4-3
  • EN61000-4-4
  • EN61000-4-5
  • EN61000-4-6
  • EN61000-4-11
Cable Plant Compliance
  • Designed for compliance to CableLabs DOCSIS/EuroDOCSIS requirements