Cisco CP-7920 Unified Wireless IP Phone Full English Product Description

Listing Title

Cisco CP-7920 Unified Wireless IP Phone (SCCP Only), IEEE 802.11b Wi-Fi Handset, Monochrome LCD Display, Up to 6 Line Appearances, Desktop Charging Cradle Included, Support for Cisco Unified Communications Manager (CUCM) / CUCM Express, Narrowband Voice Codecs, Enterprise Wireless LAN Security Suite, Ideal for Hospital Staff, Warehouse Workers, Retail Associates, and Mobile Office Employees Requiring Roaming VoIP Voice Communications Over Corporate Wi-Fi NetworksCisco

Full Commercial Overview

The Cisco CP-7920 (Unified Wireless IP Phone 7920) is Cisco’s first-generation enterprise-class IEEE 802.11b wireless VoIP handset in the 7900 series portfolio, purpose-built for mobile workers who need seamless voice connectivity while roaming across on-site wireless LAN coverage areas, such as hospitals, manufacturing warehouses, retail shopping centers, and campus office buildingsCisco.

Unlike all desktop wired IP phones (CP-794X/796X/797X series), the CP-7920 is a portable battery-powered wireless handset that leverages existing corporate Wi-Fi infrastructure (Cisco Aironet 802.11b access points) to deliver full enterprise telephony features identical to desk-mounted Cisco IP phones, managed centrally by Cisco Unified Communications Manager (CallManager) or CUCM Express. This model exclusively supports SCCP (Skinny Client Control Protocol); native SIP is not supported, differentiating it from later wireless phone generations.

Two major firmware revisions exist: Version 2.0 and enhanced Version 3.0, both introducing improved wireless roaming speed, expanded WLAN security protocols, and XML enterprise application rendering capabilities on the handset’s LCD screenCisco.

Core Hardware & Feature Differentiators vs Wired 7900 Series Desk Phones

1. IEEE 802.11b Wi-Fi portable battery-powered handset: The defining unique characteristic; fully mobile operation without wired Ethernet or power cables, supported by a rechargeable lithium-ion battery and dedicated desktop charging cradle. All other 79XX models are fixed desktop wired devices with no wireless roaming capabilityCisco.
2. Monochrome compact LCD screen with XML application support: Smaller, power-efficient grayscale display optimized for portable battery operation, capable of rendering corporate LDAP directory lookups, call logs, voicemail alerts, and custom XML business applications (e.g., hospital patient directory, retail inventory lookup)Cisco.
3. Up to six multi-line appearances and eight speed-dial hotkeys: Compact keypad layout with dedicated shortcut keys for frequently dialed extensions, optimized for one-handed mobile operation in busy work environmentsCisco.
4. Comprehensive enterprise wireless security suite: Native support for Cisco LEAP, static WEP (40/128-bit), WPA-PSK, CCKM fast secure roaming, TKIP/MIC encryption, and IEEE 802.1X authentication to comply with corporate WLAN security policiesCisco.
5. Seamless inter-access-point roaming: Optimized Layer 2 fast roaming to maintain active voice calls as users move between different Cisco Aironet Wi-Fi access points without dropped calls or audio interruptionCisco.
6. Exclusive SCCP protocol operation: No native SIP signaling support; strictly designed for deployment within CUCM/CUCM Express SCCP unified communications environments, unlike multi-protocol wired executive phones (CP-7975G, CP-7965G) that support both SCCP and SIP.
7. Full suite of standard enterprise VoIP call handling features: Matches core telephony functionality of wired Cisco desk phones, including call transfer, three-way conference, hold, mute, call park, call pickup, group pickup, call forward, caller ID display, voicemail MWI notification, and intercom auto-answerCisco.

Hardware & Physical Design Architecture

1. Chassis, Battery & Charging Hardware

• Form factor: Compact lightweight portable mobile handset with integrated external Wi-Fi antenna at the top of the unit, ergonomic curved plastic chassis for one-handed gripping. Includes a separate desktop charging cradle with AC power adapter for battery recharging; wall-mount cradle accessories sold separately.
• Chassis material: Matte gray durable impact-resistant ABS plastic, engineered for heavy daily industrial/healthcare workplace use and resistance to minor drops and surface scratches.
• Physical Dimensions (Handset Only, L × W × D): 148mm × 52mm × 28mm (5.83 × 2.05 × 1.10 inches)
• Total Unit Weight (Including Installed Lithium-Ion Battery): Approximately 120 grams (0.26 lbs)
• Battery Specifications: Removable rechargeable lithium-ion battery pack; rated for up to 30 hours standby idle time, up to 4 hours continuous talk time; full battery recharge cycle completes in roughly 4.5 hours via the supplied desktop charging cradle. Low-battery visual alert and audible warning tone activate when remaining charge is depleted.
• Operating Environment (Indoor Commercial Use Only): Operating Temperature: 0°C ~ +40°C (32°F ~ 104°F) Storage Temperature: -10°C ~ +60°C (14°F ~ 140°F) Operating Humidity: 10% – 95% non-condensing Storage Humidity: 10% – 95% non-condensing

2. Keypad, Display & Control Hardware Layout

1. Compact monochrome backlit LCD display: Grayscale screen with adjustable backlight timeout settings to conserve battery power; displays caller ID name/number, active line status icons, missed call notifications, voicemail MWI alert messages, corporate directory search results, local call history logs, XML application content, system clock, battery charge level indicator, and Wi-Fi signal strength meter.
2. Two context-sensitive left/right softkeys: Trigger menu actions labeled directly on the LCD screen above each key, used for navigating directories, call logs, and configuration menus.
3. Four-way directional navigation rocker with central select button: Primary control for scrolling menu lists, selecting directory entries, and adjusting device settings, supplementary to softkey navigation.
4. Dedicated green Answer/Send key: Initiates outbound dialing after number entry and answers all incoming ringing calls.
5. Dedicated red End/Power key: Terminates active calls, returns the handset to idle standby mode, and controls handset power on/off when held for 3+ seconds.
6. Standard 12-key numeric dial pad (0–9, *, #): Tactile rubberized keys for dialing extensions, entering usernames/passwords for wireless authentication, and activating eight built-in speed-dial hotkeys (digits 2–9 map to stored speed dial entries)Cisco.
7. Dedicated Mute hard key with status indicator: Disables the handset’s built-in microphone during active calls for private conversation.
8. Volume adjustment rocker key: Up/down control to independently adjust earpiece receiver volume during active calls and ringtone volume in idle standby mode.
9. Dedicated Menu hotkey: One-touch shortcut to access core device menus: corporate directory, call logs, voicemail access, user profiles, network configuration, and phone settingsCisco.
10. Key lock shortcut function: Quick keypad lock hotkey to prevent accidental button presses during mobile transport or pocket storage, unlockable via user-defined PIN codeCisco.
11. Integrated front-facing earpiece receiver, built-in bottom microphone, and internal ringer speaker: Optimized narrowband audio hardware for clear two-way voice communications in noisy workplace environments; multiple customizable ringtone profiles with adjustable volume levels and silent vibrate mode options.

3. Narrowband Audio Subsystem & Supported Voice Codecs

• Ergonomic integrated narrowband earpiece receiver with noise suppression; handset microphone includes automatic acoustic echo cancellation and background noise reduction for clear remote-party audio transmission.
• Supported voice audio encode/decode codecs for SCCP media streams: G.711a-law (μ-law alternate), G.711u-law, G.729a low-bitrate compression codec (optimized for wireless LAN bandwidth conservation)Cisco.
• Voice quality optimization features: Voice Activity Detection (VAD), Comfort Noise Generation (CNG), silence suppression, adaptive acoustic echo cancellation, automatic packet loss concealment to reduce audio dropouts over variable Wi-Fi link quality.

Wireless Network, Power & Hardware Interfaces

1. IEEE 802.11b Wi-Fi Wireless Radio Subsystem

• Wireless Standard Compliance: IEEE 802.11b DSSS 2.4GHz ISM band only; no support for 802.11a/g/n/ac wireless protocols.
• Supported WLAN Security Mechanisms: Cisco LEAP, IEEE 802.1X authentication, static WEP 40-bit / 128-bit encryption, WPA Pre-Shared Key (WPA-PSK), Cisco Centralized Key Management (CCKM) for fast secure roaming, TKIP encryption and MIC message integrity check validationCisco.
• Roaming Capability: Optimized Layer 2 fast roaming between Cisco Aironet 802.11b access points, maintaining uninterrupted active voice calls as users move across wireless coverage zones.
• Network Configuration Methods: Fully automated provisioning via DHCP server to retrieve TFTP server address, CUCM registration address, wireless VLAN configuration, and device firmware image files; manual static IP addressing configuration supported for isolated test deployments.
• Supported Network Standards & QoS: IPv4 only (no IPv6), Cisco Discovery Protocol (CDP), 802.1Q tagged voice VLANs, 802.1p Layer 2 QoS traffic prioritization, DSCP differentiated services marking for voice media packets, STUN NAT traversal for remote WLAN deployments, SNTP network time synchronization for synchronized device clocks across the enterprise network.

2. Power Supply Architecture

1. Primary power source: Removable rechargeable lithium-ion battery pack for fully wireless portable operation.
2. Secondary charging power source: Desktop charging cradle with dedicated AC wall power adapter (included standard with each CP-7920 unit); cradle supplies constant regulated DC power to recharge the installed battery pack and can power the handset continuously while docked for stationary desk use.
3. No PoE support: This wireless handset does not utilize Power over Ethernet; PoE is exclusive to wired desktop IP phone models in the 7900 series.

3. Hardware Interfaces (Handset Unit)

1. Removable lithium-ion battery compartment (rear chassis panel)
2. Internal integrated Wi-Fi antenna (top chassis extension)
3. Bottom electrical contact pins for connection to desktop charging cradle
4. No external wired Ethernet, RJ9 headset jack, or expansion module ports; this wireless handset does not support wired headsets, external expansion hardware, or wired LAN connections of any kind.

Core Telephony & Wireless Feature Set

All voice calling and wireless network configuration features are centrally provisioned and managed via Cisco Unified Communications Manager (CUCM) or CUCM Express using SCCP signaling; local handset menu adjustments (ringtone profiles, display brightness) are configurable by end users directly on the device.

1. Multi-Line Multi-Call Handling Supports up to six independent corporate directory number (DN) line appearances with multi-call-per-line functionality, enabling multiple concurrent incoming/outgoing active calls per line plus native call waiting alerting. Supported core call handling functions: consultative call transfer, blind transfer, three-way ad-hoc audio conference calling, call hold/resume, mute, call park, directed call pickup, group call pickup, all-call forward (unconditional/busy/no answer), caller ID name/number display for all inbound calls, automatic last-number redial, pre-dial number editing before call initiation, intercom auto-answer for internal department peer communications. Eight dedicated speed-dial hotkeys mapped to numeric keypad digits 2–9 for instant one-touch dialing of frequently used extensions, customer numbers, or conference bridge access linesCisco.
2. Directory & Call Log Productivity Features Wireless network access to centralized corporate LDAP user directories with real-time search functionality directly from the handset LCD screen; local persistent flash memory storage for three separate call log categories: all dialed outgoing calls, all received answered incoming calls, all missed/unanswered ringing calls. All log entries store caller ID information, call timestamps, and call duration data, with one-touch callback capability for all logged entries.
3. Voicemail Message Waiting Indicator (MWI) Integration Native SCCP MWI notification synchronization with Cisco Unity / Unity Connection voicemail servers; visual text alert displayed prominently on the handset LCD screen alongside a dedicated voicemail menu hotkey for one-touch direct access to voicemail message playback, message deletion, and voicemail greeting configuration.
4. User Customizable Profiles & Local Settings Multiple pre-built user operation profiles allowing instant one-touch switching of ringtone sets, ring volume levels, alert tones, vibrate mode activation, display backlight timeout durations, and audio volume presets for different workplace environments (quiet office, noisy warehouse, clinical hospital ward). End users can adjust device display contrast, key lock PIN codes, wireless network profile credentials, and local audio settings directly via the handset menu system without CUCM administrator intervention.
5. Wireless LAN & Enterprise Security Features Full suite of enterprise-grade wireless authentication and encryption protocols to comply with corporate IT security policies; CCKM fast secure roaming eliminates dropped voice calls during inter-access-point movement; handset device lock PIN functionality prevents unauthorized device access if lost or stolen, with all stored local call logs and directory entries protected by PIN authentication. Factory preloaded security firmware supports TLS encrypted SCCP signaling and SRTP encrypted voice media streams for confidential corporate voice communications across wireless LAN infrastructures.
6. XML Extensible Markup Language Application Support The monochrome LCD screen renders custom XML enterprise web applications hosted on corporate internal TFTP/HTTP servers, enabling mobile workers to access real-time business data directly on their wireless handset without a separate PC or tablet, including hospital patient care directories, retail store inventory lookup, staff shift schedules, building facility contact lists, and corporate cafeteria menusCisco.

Security & Remote Device Management Capabilities

1. End-to-End Encrypted Narrowband Voice & Signaling Communications TLS transport layer encryption for all SCCP call setup, control, and configuration signaling traffic between the wireless handset and CUCM server; SRTP AES encrypted RTP narrowband voice media data streams to prevent unauthorized wireless LAN packet sniffing and interception of confidential corporate voice conversations. All wireless WLAN user authentication credentials are stored encrypted in the handset’s internal flash memory storage.
2. Multi-Tier Access Permission Controls Dual-level access restriction architecture: administrator-level locked network provisioning and CUCM registration configuration menus (protected by admin PIN code, editable only by enterprise IT staff), and end-user-accessible local device setting menus (ringtones, display brightness, keypad lock) configurable by mobile workers without administrator credentials. Password-locked factory reset function prevents unauthorized full device configuration erasure if the handset is lost or stolen.
3. Centralized TFTP Auto-Provisioning & Unattended Firmware Upgrades Fully automated remote bulk device configuration deployment and firmware image upgrade management via standard TFTP server infrastructure integrated with CUCM; the CP-7920 automatically retrieves its unique device configuration file, wireless network profiles, and latest firmware version upon every power-on boot cycle without manual on-site IT intervention. Two official firmware generations (Version 2.0 and enhanced Version 3.0) are supported via centralized TFTP upgrade workflows.
4. Centralized Enterprise Device Monitoring & Network Diagnostics Full device real-time status tracking available within the CUCM administrative management console, including wireless handset online/offline registration state, active line call status, wireless access point association information, Wi-Fi signal strength, battery charge level, firmware version number, and historical call session audit logging for complete enterprise voice communications traceability and troubleshooting. Built-in on-device network diagnostic tools include wireless site survey signal strength scanning and ping utility testing to validate wireless LAN connectivity and CUCM server reachability for on-site IT troubleshooting.

Environmental & Regulatory Compliance Certifications

• Electromagnetic Interference Compliance: FCC Part 15 Class B, CE EMC Directive, AS/NZS CISPR22 Class B, ICES-003 Class B, VCCI Class B
• Electrical Safety Certifications: UL / C-UL 60950 Second Edition, EN 60950 Second Edition (A11 amendment), IEC 60950 Second Edition, CSA C22.2 No. 60950, AS/NZS 60950, GB4943 China national electrical safety standard
• Telecommunications & Wireless Radio Regulatory Approvals: FCC Part 68 telephony terminal device certification, FCC Part 15 wireless radio transmission certification, TIA 810A HAC hearing-aid compatibility standard
• Memory Architecture: 8MB internal flash memory for persistent firmware storage, local call log history, speed dial entries, wireless network profile credentials, and user device configuration settings; 32MB SDRAM runtime memory allocated for SCCP narrowband voice call processing, wireless radio stack operation, and XML application rendering.
• Lifecycle Status: Long-discontinued End-of-Sale (EoS) product; Cisco terminated all hardware production many years ago, with only limited critical security vulnerability and severe bug-fix maintenance support remaining active, no new feature firmware development or hardware spare part production planned.
• Standard Warranty: One-year limited Cisco hardware warranty covering manufacturing defects in the wireless handset unit, lithium-ion battery pack, and desktop charging cradle, valid for commercial enterprise deployments.

Key Specification Bullet Points

• Model Number: Cisco CP-7920 Unified Wireless IP Phone (SCCP Only)
• Device Type: Portable IEEE 802.11b Wireless VoIP Handset (No Wired Ethernet/PoE), Narrowband SCCP Telephony, Monochrome LCD Display, Desktop Charging Cradle Included
• Supported Telephony Protocols: SCCP (Skinny Client Control Protocol) Only; SIP / MGCP Unsupported
• Supported Voice Audio Codecs: G.711a-law, G.711u-law, G.729a Low-Bitrate Compression Codec
• Wireless LAN Standard: IEEE 802.11b DSSS 2.4GHz ISM Band Only
• Wireless Security Suite: Cisco LEAP, IEEE 802.1X, Static WEP 40/128-bit, WPA-PSK, CCKM Fast Secure Roaming, TKIP/MIC Encryption
• Display: Compact Monochrome Backlit LCD Screen; Adjustable Backlight Timeout, XML Enterprise Application Rendering, Call Log / Directory / MWI Alert Display
• Fixed Hardware Function Keys: 6 Multi-Line Appearances, 8 Speed-Dial Hotkeys, Left/Right Context Softkeys, Four-Way Navigation Rocker with Select, Green Answer/Send Key, Red End/Power Key, Mute Key, Volume Rocker, Dedicated Menu Hotkey, Keypad Lock Shortcut
• Audio Features: HAC Hearing-Aid Compatible Narrowband Handset Receiver, Built-In Microphone & Ringer Speaker, Full-Duplex Acoustic Echo Cancellation, VAD Voice Activity Detection, CNG Comfort Noise Generation, Packet Loss Concealment
• Physical Interfaces: Removable Lithium-Ion Battery Compartment, Internal Integrated Wi-Fi Antenna, Bottom Charging Cradle Electrical Contact Pins; No RJ9 Headset Jack, No Wired Ethernet Port, No Expansion Module Connectors
• Power Specifications: Removable Rechargeable Lithium-Ion Battery (30h Standby / 4h Talk Time); Desktop Charging Cradle with AC Power Adapter (Included); No PoE Support
• Mounting Options: Portable Handheld Operation, Desktop Docked Charging Use; Optional Separate Wall-Mount Charging Cradle Accessories Sold Separately
• Supported QoS & Networking Features: IPv4 DHCP Auto-Provisioning, CDP, 802.1Q Voice VLAN Tagging, 802.1p Layer 2 QoS Prioritization, DSCP Marking, 802.1X LAN Security Supplicant, CCKM Fast Wireless Roaming, STUN NAT Traversal, SNTP Network Time Sync, TFTP Firmware Auto-Upgrade
• Security Features: TLS Encrypted SCCP Signaling, SRTP AES Encrypted Narrowband Voice Media Streams, Encrypted Stored Wireless Credentials, Dual-Tier Admin/User PIN Access Control, Password-Locked Factory Reset
• Core Telephony Call Features: Up to 6 Independent DN Line Appearances, Multi-Call-Per-Line with Call Waiting, Call Transfer (Blind/Consultative), Three-Way Audio Conference, Hold/Resume, Mute, Call Park, Directed/Group Call Pickup, All-Call Forward, Caller ID Display, Auto Redial, Pre-Dial Editing, Intercom Auto-Answer, 8 Speed-Dial Hotkeys
• Productivity Features: Centralized LDAP Corporate Wireless Directory Search, Local Persistent Call Log Storage (Dialed/Received/Missed Calls), One-Touch Voicemail MWI Access, Multiple Customizable User Ringtone Profiles, Keypad Lock PIN Security, XML Custom Enterprise Application Support
• Management Tools: TFTP Centralized Auto-Provisioning & Bulk Firmware Upgrades, CUCM Console Real-Time Device Status Monitoring, Syslog Call Session Audit Logging, On-Board Wireless Site Survey & Ping Network Diagnostic Utilities
• Target Deployment Scenarios: Mobile enterprise workers requiring roaming VoIP voice communications across on-site 802.11b Wi-Fi coverage zones; hospital clinical staff, warehouse manufacturing personnel, retail store associates, campus facility maintenance teams, and remote mobile office employees; corporate unified communications environments running Cisco CUCM / CUCM Express SCCP telephony infrastructure with existing Cisco Aironet 802.11b wireless access point networks
• Lifecycle Status: Long-Discontinued End-of-Sale (EoS); Limited Critical Security/Bug Maintenance Support Only, No New Feature Firmware Development
• Warranty: Standard One-Year Limited Cisco Hardware Warranty for Commercial Enterprise Deployments

Model Quick Reference

• The Cisco CP-7920 is Cisco’s original first-generation portable IEEE 802.11b wireless VoIP handset within the 7900 Unified IP Phone series portfolio, exclusively supporting SCCP signaling for integration with Cisco CUCM/CUCM Express unified communications servers, with no native SIP protocol support.
• Core differentiators separating the CP-7920 wireless handset from all wired desktop 79XX IP phones (CP-794X / 796X / 797X): fully battery-powered portable wireless operation over 2.4GHz 802.11b Wi-Fi networks, no wired Ethernet connection or PoE power requirements, compact handheld mobile form factor with desktop charging cradle, monochrome battery-efficient LCD screen, optimized fast wireless roaming between Cisco Aironet access points for uninterrupted voice calls during on-site worker movement.
• Distinction from later Cisco wireless IP phone generations: The CP-7920 only supports legacy 802.11b Wi-Fi radio and SCCP-only telephony, lacking multi-band Wi-Fi support, wideband HD audio, touchscreen displays, and dual SCCP/SIP protocol compatibility introduced on subsequent wireless handset models.
• Primary deployment value proposition: Delivers full enterprise-class Cisco VoIP telephony feature parity with wired desk phones for mobile on-site workforce personnel, leveraging existing corporate 802.11b wireless LAN infrastructure to eliminate fixed desk location calling limitations, with centralized CUCM management, enterprise-grade wireless security encryption, and XML business application access directly on the portable handset unit.