Cisco CP-7905G Full English Product Description

Listing Title

Cisco CP-7905G Unified Single-Line IP Desk Phone (SCCP / H.323 / SIP Multi-Protocol Support), Pixel-Based Monochrome LCD Display, Single 10BASE-T Fast Ethernet Uplink Port, Cisco Pre-Standard Inline Power & IEEE 802.3af PoE Compatible, Monitor-Only One-Way Speaker (No Hands-Free Microphone), Four Dynamic Softkeys + Dedicated Hold & Volume Control Keys, HAC Hearing-Aid Compatible Handset, Compact Charcoal & Silver Two-Tone ABS Chassis, Single-Angle Desktop Stand or Wall Mountable, Ideal for Building Lobbies, Factory Production Floors, Staff Break Rooms, Laboratory Workspaces and Low-Traffic Single-Line Auxiliary VoIP Deployments

Full Commercial Overview

The Cisco CP-7905G is a cost-optimized single-line entry-level IP phone within the Cisco Unified IP Phone 7900 Series, engineered for basic voice communication in shared low-traffic auxiliary spaces where advanced multi-line, PC passthrough or full two-way hands-free calling are unnecessary. It is the upgraded successor to the original CP-7905 non-PoE model, adding support for network inline power and compatibility with Cisco CallManager 3.3 and later releasesCisco.

This phone supports three native VoIP protocols for flexible enterprise integration: proprietary SCCP (Skinny Client Control Protocol) for Cisco Unified Communications Manager (CUCM/CallManager), H.323 Version 2, and open SIP v2 for third-party PBX and disaster recovery SRST deployments.

Core Hardware Differentiators vs other 7900 Series Models

1. Pixel-based monochrome LCD screen: Distinguishes it from the LCD-less CP-7902G, delivering visual Caller ID, call timers and XML application rendering.
2. Monitor-only passive speaker: Only outputs ringtone and one-way call monitoring audio; no built-in microphone for full-duplex two-way hands-free conference calling (major contrast to CP-7912G which features full hands-free speakerphone).
3. Single 10BASE-T Ethernet port only: No secondary PC pass-through switch port, eliminating workstation daisy-chaining capability for simplified auxiliary-space cabling.
4. Multi-protocol support (SCCP/H.323/SIP): Broader protocol compatibility than the SCCP-only CP-7902G.
5. Minimal key layout: Four dynamic LCD softkeys, dedicated Hold key, volume rocker and standard numeric dial pad, without extra dedicated Transfer/Conference hard keys.

The unit features a two-tone matte charcoal and silver recyclable ABS plastic chassis, a single-position foldable desktop foot stand for basic screen viewing, and integrated rear mounting cutouts for direct wall installation without separate wall-mount accessory kits.

The CP-7905G reached official End-of-Sale (EoS) status years ago, with only limited critical security bug maintenance support remaining; Cisco recommends the CP-7906G as its direct hardware replacement model. All remote mass provisioning, unattended bulk firmware upgrades and centralized device monitoring are supported via TFTP auto-provisioning servers and embedded HTTPS web administration interfaces, fully integrated with CUCM and Cisco Unified SRST fallback voice gateways.

Hardware & Physical Design Architecture

1. Compact Chassis & Mounting Options

• Form factor: Low-profile desktop body equipped with a single-position fixed foldable foot stand for basic desk placement; the foot stand can be fully detached to enable vertical wall mounting via integrated rear chassis cutouts, with no additional wall mount kit required.
• Chassis material: Two-tone matte charcoal black + silver recyclable polycarbonate ABS plastic, scratch-resistant for heavy shared-space industrial and lobby usage.
• Physical Dimensions (H × W × D, excluding handset): 203mm × 177mm × 152mm (8 × 7 × 6 inches).
• Total Unit Weight (including standard coiled handset): 0.9 kg (1.9 lbs)Cisco.
• Operating Environment (Indoor 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. Key Layout, LCD Display & Control Hardware

The CP-7905G integrates a pixel-based monochrome LCD paired with simplified tactile control keys optimized for basic single-line call workflows:

1. Pixel-based monochrome LCD display: Graphical screen supporting Caller ID name/number, real-time call timers, local call history logs, XML enterprise application rendering, system menu navigation, date/time clock and voicemail MWI alert notifications.
2. Single tricolor LED illuminated Hold status key: Visual real-time line hold state signaling (red LED lit to indicate active held calls).
3. Four context-sensitive dynamic softkeys positioned directly below the LCD screen, dynamically mapped to real-time on-screen menu options for call transfer, conference, voicemail and directory access.
4. Standard 12-key tactile numeric dial pad (0–9, *, #) with rounded tactile keys for easy operation in noisy industrial environments.
5. Dedicated Volume toggle rocker: Adjustable decibel output for handset receiver audio and incoming ringtone volume levels.
6. Built-in passive monitor speaker: Only supports ringtone playback and one-way call listening; lacks integrated microphone hardware and echo cancellation circuits for two-way hands-free conversation.
7. No standalone dedicated Transfer, Conference or Messages hard keys; these functions are accessed exclusively via LCD softkey navigation.

3. Audio Subsystem & Supported Voice Codecs

• Ergonomic analog coiled handset with noise-isolating receiver, certified HAC (Hearing-Aid Compatible) to meet ADA global accessibility standards for users wearing hearing assistive devices.
• Passive monitor-only built-in speaker: Delivers ringtone alert audio and one-way call monitoring audio; no microphone input for full-duplex hands-free conference calling.
• Supported voice audio encode/decode codecs for SCCP/SIP/H.323 media streams: G.711a-law, G.711mu-law, G.729, G.729a, G.729AB low-bitrate codecCisco.
• Voice quality optimization features: Voice Activity Detection (VAD), Comfort Noise Generation (CNG), silence suppression and error concealment to eliminate artificial silent line background noise during idle call periods.

Network, Power & Hardware Interfaces

1. Single 10BASE-T Fast Ethernet Uplink RJ45 Port

One auto-sensing 10Mbps 10BASE-T Ethernet uplink port for connecting the IP phone to corporate LAN switches, VoIP gateways or CUCM voice servers for SCCP/SIP/H.323 call control signaling and RTP voice media data streams. No secondary PC pass-through switch port is integrated into the hardware design, eliminating workstation daisy-chaining functionality.

Supported networking standards: IPv4 addressing only (DHCP dynamic IP assignment or static manual IP configuration), Cisco Discovery Protocol (CDP), LLDP device discovery, 802.1Q voice VLAN tagging, 802.1p Layer 2 QoS traffic prioritization, STUN NAT traversal for remote branch industrial workspace deployments, SNTP network time synchronization. The phone fully supports Cisco Unified SRST SIP fallback registration for WAN connectivity failure disaster recovery.

2. Dual Power Supply Options (Pre-Standard / IEEE 802.3af PoE Primary Power)

1. Native dual-compatibility Power over Ethernet support (primary power source): Compatible with both legacy Cisco pre-standard inline power and official IEEE 802.3af Class 0 PoE network switches, enabling centralized network power management for industrial and lobby deployments. Input rating: 48V DC PoE power input from all compliant Cisco Catalyst PoE switches.
2. Optional external 48V DC universal AC-to-DC power cube (sold separately, part number CP-PWR-CUBE=) for non-PoE network environments lacking PoE-enabled switchesCisco.

3. Rear Panel Physical Interfaces

1. RJ9 modular handset jack for connecting the coiled handset cord
2. Single RJ45 10BASE-T Ethernet PoE uplink port for LAN network connection
3. DC 48V auxiliary power input jack for optional external AC power adapter
4. Recessed pinhole password-protected factory reset button to restore all device firmware and configuration settings to factory default values

Core Telephony Feature Set

All calling and device configuration functions are provisioned via CUCM / Cisco Unified SRST / third-party SIP PBX auto-provisioning templates; routine call operations are triggered via LCD softkey navigation or dedicated physical Hold and Volume keys:

1. Single-Line Multi-Call Handling Supports one independent directory number (DN) line registration with multi-call-per-line appearance, enabling multiple concurrent active calls on the single shared auxiliary line plus native call waiting functionality. Call hold, consultative call transfer and three-way ad-hoc audio conference calls are accessed via LCD softkey menus. Supports call swap between multiple active calls, automatic last-number redial via softkey navigation. Shared line appearance monitoring support for multi-user shared lobby/factory auxiliary voice lines.
2. Caller ID & Personalization Features Visual Caller ID name/number displayed on the graphical LCD screen; adjustable ringtone volume and multiple selectable distinct ringtone tone options, customizable unique ring alert patterns for internal vs external incoming calls. Local device configuration menu accessible via LCD softkeys for volume, ringtone and network parameter adjustments. Up to four configurable local speed dial numbers programmed via CUCM server-side settings.
3. Auxiliary Workplace Calling Functions One-touch redial via softkey navigation, persistent MWI voicemail indicator via LCD screen pop-up alerts, call forward all/busy/no answer routing rules configurable via CUCM/SIP PBX server-side settings, call park and call pickup functionality, intercom auto-answer calling for cross-factory internal staff coordination, toll bar call blocking override support for authorized emergency outbound calling.
4. Local Call Log Storage Onboard persistent flash memory storage for dialed outgoing calls, received answered calls and missed incoming calls; call history data fully viewable via the phone’s graphical LCD screen or embedded web administration portal.
5. Voicemail MWI Integration Native Message Waiting Indicator (MWI) notification delivered via SCCP/SIP/H.323 SUBSCRIBE/NOTIFY messaging; visual pop-up LCD screen alerts notify users of unheard voicemail messages, with voicemail portal retrieval accessible via dedicated LCD softkey.
6. Supported Security Call Features Anonymous incoming call rejection, outbound caller ID blocking configurable via PBX/server-side settings, end-to-end encrypted SCCP/SIP/H.323 call control signaling (TLS) and encrypted voice media streams (SRTP AES encryption) for secure confidential auxiliary workspace voice communications.

Security & Remote Device Management Capabilities

1. End-to-End Encrypted Voice & Signaling Communications TLS transport layer encryption for all SCCP/SIP/H.323 call setup and control signaling; SRTP AES encrypted RTP voice media data streams to prevent unauthorized wired or wireless call audio interception on shared industrial and lobby corporate network infrastructures.
2. Multi-Tier Access Permission Controls Separate administrator and end-user access privilege levels protected by unique alphanumeric authentication passwords; password-locked factory reset function to block unauthorized wiping of shared auxiliary line registrations, speed dial configuration data and network provisioning parameters.
3. Centralized Auto-Provisioning & Unattended Firmware Upgrades Fully unattended remote bulk firmware upgrades pushed via TFTP secure auto-provisioning servers, fully compatible with CUCM, CUCM Express and Cisco Unified SRST SIP fallback voice gateways. Embedded HTTPS web-based local administration portal for on-site device configuration and real-time single-line registration status monitoring.
4. System Monitoring & Built-In Network Diagnostics Real-time device status tracking available via CUCM / Cisco Unified SRST management consoles, including online/offline LAN connectivity status, single SCCP/SIP/H.323 line registration state, active call session auditing and centralized syslog event logging for complete industrial/lobby network telephony audit trails; integrated built-in ping diagnostic tool for local LAN connectivity troubleshooting.

Environmental & Regulatory Compliance Certifications

• Regulatory EMI/EMC: FCC Part 15 Class B electromagnetic interference compliance, CE marking per EU EMC directive, AS/NZS CISPR22 Class B certification.
• Safety certifications: UL / C-UL 60950 electrical safety certification, EN 60950 IEC global electrical safety standard, CSA C22.2 No. 60950.
• Telecom regulatory approvals: FCC Part 68 telecom terminal device certification, TIA 810A HAC hearing aid compatibility standard.
• Memory architecture: 8MB flash memory for persistent firmware, speed dial and network configuration storage; 32MB SDRAM runtime memory for SCCP/SIP/H.323 call processing and network stack operation.
• Lifecycle Status: Long-discontinued End-of-Sale (EoS), Cisco CP-7906G designated as direct hardware replacement model; limited critical security/bug maintenance support only, no new feature firmware development.
• Warranty: Standard one-year limited Cisco hardware warranty for commercial industrial, hospitality and business end-user deployments.

Key Specification Bullet Points

• Model Number: Cisco CP-7905G (Two-Tone Charcoal & Silver Single-Line Unified IP Phone; No alternate white chassis variant available)
• Device Type: Entry-Level Single-Line Unified IP VoIP Desk Phone (Triple Native SCCP / H.323 / SIP Multi-Protocol), Pixel-Based Monochrome Graphical LCD Display, Single 10BASE-T Fast Ethernet PoE Uplink Port, Monitor-Only One-Way Speaker (No Two-Way Hands-Free Call Support)
• Supported Telephony Protocols: SCCP (Skinny Client Control Protocol) for Cisco CUCM / UCME; H.323 Version 2; SIP v2 open standard for third-party SIP PBX / Cisco Unified SRST Fallback Voice Gateways
• Supported Voice Audio Codecs: G.711a / G.711u, G.729, G.729a, G.729AB Low Bitrate Codec
• Display: Pixel-Based Monochrome Graphical LCD Screen; Visual Caller ID, Call Timers, Call Logs and XML Application Rendering
• Fixed Hardware Function Keys: Dedicated Hold LED Key, Volume Adjustment Toggle Rocker, Standard 12-Key Numeric Dial Pad; Four Dynamic LCD Context Softkeys
• Audio Features: HAC Hearing-Aid Compatible Handset Receiver, Monitor-Only One-Way Call Speaker (No Microphone / Full-Duplex Hands-Free Function), VAD Voice Activity Detection, CNG Comfort Noise Generation, Silence Suppression & Error Concealment
• Physical Interfaces: 1 x RJ9 Handset Port, Single 1 x RJ45 10BASE-T Fast Ethernet PoE Uplink Port, 48V DC Aux Power Input Jack, Password-Protected Factory Reset Pinhole; No PC Pass-Through Switch Port, No Dedicated Headset Jack
• Power Specifications: Dual Compatibility Power Source (Legacy Cisco Pre-Standard Inline Power + IEEE 802.3af Class 0 PoE Primary Power); Optional Separate 48V DC Universal AC Power Cube (CP-PWR-CUBE=, Sold Separately)
• Mounting Method: Single-position fixed foldable desktop foot stand as standard; Wall mountable via integrated rear chassis cutouts (No separate wall mount accessory kit required)
• Supported QoS & Networking Features: IPv4 DHCP/Static IP Assignment, CDP / LLDP Device Discovery, 802.1Q Voice VLAN Tagging, 802.1p Layer 2 QoS Prioritization, STUN NAT Traversal, SNTP Network Time Synchronization, Cisco Unified SRST Dual SIP Registration Support
• Security Features: TLS Encrypted SCCP/SIP/H.323 Call Signaling, SRTP AES Encrypted Voice Media Streams, Dual-Level Admin/User Password Access Control, Password-Locked Factory Reset, Embedded HTTPS Web Administration Interface
• Core Telephony Call Features: Single Independent SIP/SCCP/H.323 Line Registration with Shared Line Appearance Support, Multi-Call-Per-Line Appearance, Supports Multiple Concurrent Calls + Call Waiting, Softkey-Accessible Hold / Redial / Transfer / Conference Functions, Monitor-Only Ringtone/Call Monitoring Speaker, LCD Pop-Up MWI Voicemail Message Waiting Alerts, Anonymous Call Rejection, Outbound Caller ID Blocking, Call Forward All/Busy/No Answer, Call Park & Call Pickup, Intercom Auto-Answer Calling, Toll Bar Call Block Override, Up to Four Local Programmable Speed Dials, Local Call History Log Storage, XML LDAP Corporate Directory Lookup, XML Hosted Application Rendering
• Management Tools: TFTP Secure Remote Auto-Provisioning, Unattended Bulk Remote Firmware Upgrades, Embedded Web-Based Local Admin Portal, CUCM / Cisco Unified SRST Centralized Device Monitoring, Syslog Event Logging, Built-In Ping Network Diagnostic Tool
• Target Deployment Scenarios: Commercial building lobby public telephones, factory production floor auxiliary voice lines, laboratory workspace basic VoIP endpoints, office hallway and corridor auxiliary phones, cafeteria and staff break room shared voice stations, hotel back-of-house auxiliary single-line phones, all low-traffic industrial/hospitality/business auxiliary VoIP environments requiring cost-effective basic single-line call handling with graphical LCD visual feedback and PoE network power support
• Lifecycle Status: Long-discontinued End-of-Sale (EoS); Cisco CP-7906G recommended direct hardware replacement model
• Warranty: One-year limited Cisco hardware warranty

Model Quick Reference

• CP-7905G is the multi-protocol single-line entry-level IP phone of the Cisco Unified IP Phone 7900 Series, supporting SCCP, H.323 and open SIP / SRST fallback protocols, purpose-built exclusively for low-traffic shared auxiliary spaces (lobbies, factories, labs) requiring basic core call functionality with graphical LCD Caller ID display and PoE inline power support.
• Core positioning: Ultra cost-optimized basic single-line VoIP endpoint with pixel-based monochrome graphical LCD screen, differentiated from other 7900 Series desk phone models by three critical hardware limitations: monitor-only one-way speaker (no two-way hands-free conversation), single 10BASE-T Ethernet uplink port (no PC pass-through switch), absence of dedicated physical Transfer/Conference hard keys (all advanced call functions accessed via LCD softkeys).
• Key internal series differentiation vs other 7900 series models:
  1. CP-7902G: Single line, no graphical LCD screen, monitor-only speaker, single Fast Ethernet uplink port, only SCCP protocol support
  2. CP-7905G: Single line, pixel-based graphical LCD screen, monitor-only speaker, single 10BASE-T uplink port, triple SCCP/H.323/SIP multi-protocol support
  3. CP-7912G: Single line, graphical LCD screen, full-duplex two-way hands-free speakerphone, dual Fast Ethernet ports with PC pass-through switch, dedicated physical Transfer/Conference hard keys
  4. CP-7942G: Two multi-call lines, backlit high-resolution graphical LCD display, full-duplex speakerphone, dual Fast Ethernet PC pass-through ports, programmable BLF line keys, headset jack support
• Primary deployment advantage: Minimal total cost of ownership and simplified hardware maintenance for low-traffic shared industrial/hospitality auxiliary voice deployments, combining basic essential single-line call handling capabilities, graphical LCD visual Caller ID feedback, triple-protocol compatibility supporting on-prem CUCM, H.323 gateways and Cisco Unified SRST SIP fallback disaster recovery, dual pre-standard/standard PoE power compatibility for broad legacy/modern switch support, compact space-saving two-tone chassis form factor, flexible desktop or wall mounting, and centralized remote mass provisioning and firmware upgrade management for multi-site enterprise auxiliary voice network deployments.

介绍一下CiscoCP-7905G的主要功能特点

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