Cisco CP-7912G Full English Product Description

Listing Title

Cisco CP-7912G Unified Single-Line IP Desk Phone (SCCP Native Protocol, SRST SIP Fallback), 192×64 Pixel-Based Monochrome LCD Display, Dual 10/100BASE-TX Fast Ethernet Integrated Switch Ports for PC Passthrough, Dual Power Compatibility (Legacy Cisco Pre-Standard Inline Power + IEEE 802.3af Class 1 PoE), Full-Duplex Echo-Canceling Hands-Free Speakerphone, Four Dynamic LCD Softkeys, Illuminated Dedicated Hold Key, HAC Hearing-Aid Compatible Handset, Two-Tone Charcoal & Silver Recyclable ABS Chassis, Single-Angle Removable Desktop Foot Stand, Wall Mountable Without Separate Wall Kit, Ideal for Low-to-Medium Traffic Single-Line Office Cubicles, Retail Staff Desks, Small Business Back Offices and Auxiliary Workplace VoIP Deployments

Full Commercial Overview

The Cisco CP-7912G is an entry-level single-line enterprise IP phone in the Cisco Unified IP Phone 7900 Series, designed for cubicle employees, retail clerks and light-use auxiliary workspaces with low to moderate daily call volumesCisco. It delivers core essential business telephony features at a cost-effective price point, filling the gap between basic monitor-speaker-only entry models (CP-7902G/7905G/7906G) and the enhanced CP-7911G mid-tier single-line phone.

Core Hardware & Feature Differentiators vs Other 7900 Series Models

1. Dual integrated 10/100 Fast Ethernet switch ports: Separate LAN uplink and PC passthrough port to daisy-chain office desktops, a major upgrade over single-port entry-level 790X models without PC connectivityCisco.
2. Full-duplex two-way hands-free speakerphone: Equipped with built-in microphone for real-time conference calls, unlike the one-way monitor speaker on CP-7906G and earlier low-end variantsCisco.
3. Pixel-based graphical monochrome LCD: Supports Caller ID display, call logs, XML enterprise applications and multi-language menu navigation, absent on LCD-less CP-7902G.
4. Key distinction from CP-7911G: The CP-7912G features smaller flash memory capacity, limited XML application processing performance, and lacks factory pre-installed X.509v3 digital authentication certificates built into the CP-7911G security stack. The CP-7912G primarily supports native SCCP with SIP only for SRST disaster recovery, rather than full dual native SCCP/SIP operation on the 7911G.
5. Dual PoE compatibility: Works seamlessly with both legacy Cisco pre-standard inline power and industry-standard IEEE 802.3af PoE switches, compatible with mixed-generation corporate network infrastructure.

The unit uses scratch-resistant two-tone matte charcoal black and silver recyclable ABS plastic chassis construction. It ships with a single-position foldable desktop foot stand that can be fully detached for vertical wall mounting via pre-molded rear chassis cutouts; no separate wall-mount accessory kit is requiredCisco.

Cisco announced End-of-Sale (EoS) for the CP-7912G years ago, with only limited critical security vulnerability and bug-fix maintenance support remaining; no new feature firmware releases are planned. Remote bulk provisioning, unattended mass firmware upgrades and centralized device monitoring are fully supported via TFTP auto-provisioning servers and embedded HTTPS web administration portal, fully compatible with Cisco CallManager 3.3(2) and later CUCM/CUCM Express releases, as well as 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 foldable foot stand for basic desk placement; foot stand is fully removable for vertical wall mounting via integrated rear chassis mounting cutouts, no extra wall-mount kit requiredCisco.
• Chassis material: Two-tone textured matte charcoal black + silver recyclable polycarbonate ABS plastic, scratch-resistant for daily shared office usage.
• Physical Dimensions (H × W × D, excluding handset): 203.2mm × 176.7mm × 152.4mm (8 × 7 × 6 inches)Cisco.
• Total Unit Weight (including standard coiled handset): Approximately 0.9 kg (1.9 lbs).
• 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-condensingCisco

2. Key Layout, LCD Display & Control Hardware

The CP-7912G integrates a pixel-based monochrome LCD paired with streamlined tactile control keys optimized for standard single-line office call workflows:

1. Pixel-based monochrome LCD display: 192 × 64 pixel resolution, adjustable contrast and backlight brightness; supports visual Caller ID name/number, real-time call timers, local call history logs, XML visual enterprise application rendering, system menu navigation, date/time clock and voicemail MWI alert notifications.
2. Illuminated dedicated Hold key: LED lights solid red when calls are placed on hold, flashes red if a held call exists alongside an active incoming call, remains dark when no calls are held.
3. Four context-sensitive dynamic softkeys positioned directly below the LCD screen, dynamically mapped to real-time on-screen menu options for call transfer, three-way conference, voicemail retrieval, corporate directory access and speed dial management.
4. Standard 12-key tactile numeric dial pad (0–9, *, #) with rounded tactile keys for easy dialing in busy office environments.
5. Central five-way directional navigation rocker with integrated select button for scrolling contact directories, call logs and device configuration menus.
6. Auxiliary dedicated control keys: Volume Up/Down rocker (adjustable decibel tuning for handset receiver, speakerphone and ringtone output), Redial shortcut key, End Call key, dedicated Menu key for quick access to call logs, ringtone preferences and device settings.
7. Vertical red Message Waiting Indicator (MWI) LED on the top chassis edge to notify users of unheard voicemail messages, with persistent steady red illumination until voicemail retrieval.
8. Built-in full-duplex echo-canceling hands-free speakerphone with integrated microphone for two-way conference audio, distinct from the one-way monitor speaker on entry-level 7906G modelsCisco.

3. Audio Subsystem & Supported Voice Codecs

• Ergonomic analog coiled handset with noise-isolating receiver, certified HAC (Hearing-Aid Compatible) to meet TIA 810A and ADA global accessibility standards for users wearing hearing assistive devices.
• Full-duplex echo-canceling hands-free speakerphone with integrated microphone, optimized for clear two-way conference call audio, with automatic acoustic feedback suppression and background noise reduction.
• Supported voice audio encode/decode codecs for SCCP/SRST SIP media streams: G.711a-law, G.711mu-law, G.729a, G.729AB low-bitrate codec.
• 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. Dual 10/100BASE-TX Fast Ethernet Switched RJ45 Ports

Two auto-sensing 10/100Mbps Fast Ethernet ports with integrated mini internal network switch, enabling seamless daisy-chaining of desktop PCs without additional wall-mounted network jacks, reducing office cabling infrastructure costsCisco:

• Primary WAN Network Port (labeled 10/100 SW): Connects the IP phone to corporate LAN switches, VoIP gateways or CUCM voice servers for SCCP call control signaling and RTP voice media data streams.
• Secondary PC Access Port (labeled 10/100 PC): Provides direct Fast Ethernet wired network connectivity for attached laptops, desktop workstations or POS terminals routed through the phone’s integrated switch.

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 office 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 Class 1 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 1 PoE network switches, enabling centralized network power management for standard office cubicle 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-3=) for non-PoE network environments lacking PoE-enabled switches; regional country-specific AC power cords available as separate accessories.

3. Rear Panel Physical Interfaces

1. RJ9 modular handset jack for connecting the coiled handset cord
2. Dual RJ45 10/100 Fast Ethernet PoE switched ports (Network uplink + PC access port)
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 auto-provisioning templates; routine call operations are triggered via LCD softkey navigation or dedicated physical Hold, Menu 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 office 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 dedicated Redial key. Shared line appearance monitoring support for multi-user shared front-office 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 dedicated Menu key for volume, ringtone and network parameter adjustments. Multiple configurable local speed dial numbers programmed via CUCM server-side settings or local phone menus.
3. Standard Office Workplace Calling Functions One-touch redial via dedicated physical key, persistent MWI voicemail indicator via LCD screen pop-up alerts, call forward all/busy/no answer routing rules configurable via CUCM server-side settings, call park and call pickup functionality, intercom auto-answer calling for cross-department 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 SUBSCRIBE/NOTIFY messaging (SIP MWI supported under SRST fallback); visual pop-up LCD screen alerts plus steady red chassis MWI LED illumination 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 call control signaling (TLS) and encrypted voice media streams (SRTP AES encryption) for secure confidential office voice communications. The CP-7912G does not ship with pre-installed X.509v3 digital authentication certificates, a key security limitation versus the CP-7911G model.

Security & Remote Device Management Capabilities

1. End-to-End Encrypted Voice & Signaling Communications TLS transport layer encryption for all SCCP call setup and control signaling; SRTP AES encrypted RTP voice media data streams to prevent unauthorized wired or wireless call audio interception on shared corporate office network infrastructures. No factory preloaded X.509v3 identity certificates included with the base unit.
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 office 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 line registration state, active call session auditing and centralized syslog event logging for complete office 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, ICES-003 Class B, VCCI Class B.
• Safety certifications: UL / C-UL 60950 Second Edition electrical safety certification, EN 60950 Second Edition (including A11 and A12), IEC 60950 Second Edition, CSA C22.2 No. 60950, AS/NZS 60950, GB4943 China national electrical safety standard.
• 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/SRST SIP call processing and network stack operation.
• 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 office, retail and education business end-user deployments.

Key Specification Bullet Points

• Model Number: Cisco CP-7912G (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 (Native SCCP Protocol, SIP Only for SRST Fallback), Pixel-Based 192×64 Monochrome Graphical LCD Display, Dual 10/100BASE-TX Fast Ethernet Integrated Switch Ports for PC Passthrough, Full-Duplex Two-Way Echo-Canceling Hands-Free Speakerphone
• Supported Telephony Protocols: SCCP (Skinny Client Control Protocol) Primary for Cisco CUCM / UCME; SIP v2 Only for Cisco Unified SRST WAN Fallback
• Supported Voice Audio Codecs: G.711a / G.711u, G.729a, G.729AB Low Bitrate Codec
• Display: Pixel-Based Monochrome Graphical LCD Screen; 192×64 Pixel Resolution, Adjustable Contrast & Backlight Brightness, Multi-Language Menu & XML Application Rendering
• Fixed Hardware Function Keys: Illuminated Hold Key, Dedicated Menu Key, Volume Adjustment Toggle Rocker, Redial / End Call Hard Keys; Four Dynamic LCD Context Softkeys, Five-Way Navigation Rocker, Standard 12-Key Numeric Dial Pad
• Audio Features: HAC Hearing-Aid Compatible Handset Receiver, Full-Duplex Echo-Canceling Two-Way Hands-Free Speakerphone, VAD Voice Activity Detection, CNG Comfort Noise Generation, Silence Suppression & Error Concealment
• Physical Interfaces: 1 x RJ9 Handset Port, Dual 10/100BASE-TX RJ45 Fast Ethernet Switched PoE Ports (Network Uplink + PC Access Port), 48V DC Aux Power Input Jack, Password-Protected Factory Reset Pinhole; No Dedicated Headset Jack
• Power Specifications: Dual Compatibility Power Source (Legacy Cisco Pre-Standard Inline Power + IEEE 802.3af Class 1 PoE Primary Power); Optional Separate 48V DC Universal AC Power Cube (CP-PWR-CUBE-3=, 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 SIP Fallback Registration Support
• Security Features: TLS Encrypted SCCP Call Signaling, SRTP AES Encrypted Voice Media Streams, Dual-Level Admin/User Password Access Control, Password-Locked Factory Reset, Embedded HTTPS Web Administration Interface (No Pre-Installed X.509v3 Authentication Certificates)
• Core Telephony Call Features: Single Independent SCCP Line Registration (SIP SRST Fallback), Multi-Call-Per-Line Appearance, Supports Multiple Concurrent Calls + Call Waiting, Softkey-Accessible Hold / Redial / Transfer / Conference Functions, Full-Duplex Two-Way Hands-Free Speakerphone, 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, 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: Standard corporate office cubicle employee workstations, retail store staff back-office desks, K-12 / university classroom administrative stations, small business single-line front-desk telephones, low-to-moderate traffic single-line general office VoIP environments requiring basic hands-free conferencing and desktop PC passthrough network capability
• Lifecycle Status: Long-discontinued End-of-Sale (EoS); limited critical security/bug maintenance support only, no new feature firmware development
• Warranty: One-year limited Cisco hardware warranty

Model Quick Reference

• CP-7912G is the entry-level single-line IP phone of the Cisco Unified IP Phone 7900 Series, with native SCCP primary protocol and SIP limited only for SRST disaster recovery fallback. It is purpose-built for standard office cubicle workers, retail clerks and auxiliary low-traffic workspaces, featuring full two-way hands-free speakerphone and integrated dual-port Ethernet switch for desktop PC daisy-chainingCisco.
• Core positioning: Cost-optimized basic single-line enterprise VoIP endpoint with pixel-based monochrome graphical LCD screen, differentiated from entry-level 7900 models (CP-7906G) by three critical hardware upgrades: dual Fast Ethernet switch ports with PC passthrough, true full-duplex two-way hands-free speakerphone, graphical LCD with XML application support. It is distinguished from the higher-tier CP-7911G model by smaller flash memory, limited XML application performance, lack of factory pre-installed X.509v3 security certificates, and absence of full dual native SCCP/SIP protocol support (SIP only for SRST fallback).
• Key internal series differentiation vs other 7900 series models:
  1. CP-7902G / CP-7905G / CP-7906G: Single line, monitor-only one-way speaker (no hands-free calling), single Ethernet port only (no PC passthrough), no graphical LCD (7902G)
  2. CP-7912G: Single line, basic full two-way hands-free speakerphone, dual Fast Ethernet switch ports for PC passthrough, graphical LCD, limited XML processing, SIP only for SRST fallback, no pre-installed security certificates
  3. CP-7911G: Single line, enhanced memory, full dual native SCCP/SIP operation, factory pre-installed X.509v3 certificates, superior XML application performance
  4. CP-7942G / CP-7962G: Multi-line (2/6 lines), multiple programmable BLF line keys, higher-resolution backlit LCD screens for reception/manager deployments
• Primary deployment advantage: Budget-friendly full-featured single-line office VoIP solution delivering core enterprise telephony functionality, true hands-free conference calling capability, integrated Ethernet switch eliminating extra wall network jacks for cubicle PCs, dual PoE power compatibility supporting mixed-generation corporate switches, compact two-tone chassis form factor, flexible desktop or wall mounting, and centralized remote mass provisioning and firmware upgrade management for multi-branch small business and enterprise office deployments.

介绍一下CiscoCP-7912G的主要功能特点

提供一些关于CiscoCP-7912G的应用案例

对比一下CiscoCP-7912G和CiscoCP-7906G的差异