Cisco CTS-SX20N-P40-K9

Cisco TelePresence SX20 Quick Set with Precision 40 Camera Mid-Size Conference Room Video Conferencing Endpoint (Radio Enabled Encrypted K9 Variant) Full Official Specification Document

1. Product Overview

Cisco CTS-SX20N-P40-K9, full official product nameCisco TelePresence SX20 Quick Set Integrated HD Video Conferencing Codec with Precision 40 PTZ Camera Endpoint (Radio Enabled Encrypted K9 Variant). It is Cisco’s mid-tier enterprise telepresence solution, designed for standard small-to-medium conference rooms, multi-person breakout spaces, regional branch offices and hybrid training rooms supporting up to 8 concurrent meeting participants, delivering enterprise-grade 1080p HD video, embedded optional MultiSite multiparty conferencing and full unified communications integration at a cost-effective deployment price pointCisco.

SKU Naming Breakdown

1. CTS-SX20N-P40-K9:
   • CTS = Cisco TelePresence System unified collaboration endpoint product family;
   • SX20 = Mid-range Quick Set telepresence codec hardware platform for medium meeting rooms;
   • N = Revised updated hardware generation, integrated dedicated Intelligent Proximity audio transmitter hardware for native wireless mobile content casting and smartphone pairing (differentiated from legacy non-N CTS-SX20-P40-K9 without built-in proximity signal transmission hardware)Cisco;
   • P40 = Matched Precision 40 PTZ camera (4x optical zoom, balanced field of view for standard medium meeting rooms)Cisco;
   • K9 = Cisco enterprise secure encrypted firmware variant, supporting AES 128/256-bit end-to-end SRTP media encryption for all meeting audio, video and presentation sharing streams. This radio-enabled model supports wireless Intelligent Proximity mobile pairing and cross-device content casting.
2. High-security counterpart model: CTS-SX20N-P40-NR-K9 (No Radio variant). All wireless proximity signal transmitters are factory removed to meet strict RF-restricted compliance standards for classified government, military and regulated financial office environments. All core video, audio, codec and call processing functions remain fully identical; the only permanently disabled feature is wireless mobile content sharing via Cisco Intelligent Proximity.

Product Lifecycle Notice

The Cisco TelePresence SX20 Quick Set (CTS-SX20N-P40-K9) was officially released October 24, 2011. The product reached End-of-Sale (EoS) on October 29, 2019, with official End-of-Support (EoSS) date set for October 31, 2024. Cisco no longer manufactures new hardware units or releases feature firmware updates; limited critical security vulnerability patches, spare parts inventory and archived technical documentation remain available for existing deployed hardware under active service contractsCisco.

This compact low-profile single-body codec chassis adopts minimalist matte silver aluminum front panel design, integrating high-performance telepresence codec, built-in audio processing circuits and dedicated Intelligent Proximity wireless signal transmitter into one unified device. The complete Quick Set solution pairs the codec with a Cisco Precision 40 PTZ camera, single Table Microphone 20 and TRC6 infrared remote control, engineered for simple mounting on top of standard flat-panel displays or wall-mounted large-format TVs, eliminating separate standalone codec boxes and complex multi-peripheral wiring harnessesCisco.

The factory-sealed standard shipping bundle includes:

1. SX20 all-in-one integrated codec main unit (TTC7-21)
2. Cisco Precision 40 PTZ camera (4x optical zoom)
3. Table Microphone 20 wired conference microphone
4. TRC6 infrared remote control
5. Wall mounting bracket kit, HDMI video cable, CAT6 Ethernet cable, microphone audio cable
6. External power supply adapter and complete installation & configuration documentationCisco.

Powered by Cisco TelePresence TC 7.x and Cisco Collaboration Endpoint CE 8.x / CE 9.x embedded firmware, the CTS-SX20N-P40-K9 supports dual hybrid deployment architectures: cloud registration and centralized full-lifecycle device management via Cisco Webex Control Hub; on-premises unified communications deployment with Cisco Unified Communications Manager (CUCM v8.6 and above), paired with Cisco Expressway-C / Expressway-E cross-firewall traversal gateways for distributed global corporate branch networks.

Core supported enterprise capabilities: Native 1080p60 HD Precision 40 PTZ camera with balanced wide-angle field of view and remote far-end camera control, dual simultaneous video output streams for multi-display conference room deployments, embedded optional MultiSite 4-way multiparty conferencing without external media bridges, dual-stream H.239/BFCP presentation content sharing, Cisco Intelligent Proximity wireless mobile content casting, OBTP one-touch scheduled meeting join, industry-standard H.323/SIP multi-vendor interoperability, PoE single-cable power and data transmission, LDAP corporate directory integration and extensible xAPI room automation integration.

2. Cisco Precision 40 PTZ Camera & High-Performance Video Processing System

Precision 40 Camera Hardware Specifications

• Image Sensor & Resolution: 1/3-inch CMOS progressive scan sensor, native 1920 × 1080 (1080p) video capture up to 60fps for ultra-smooth motion rendering;
• Optics & Zoom: 4x total zoom (2.65x optical zoom + digital zoom), fixed f/2.1 aperture lens, automatic continuous focus, auto brightness and auto white balance adjustment; supports manual focus and exposure control via remote IR commandsCisco;
• Field of View: 70° horizontal field of view, balanced for standard rectangular medium conference rooms;
• Pan/Tilt Mechanical Range: Pan ±90° left/right full horizontal rotation; Tilt +15° upward / -25° downward vertical adjustment, fully motorized PTZ with complete far-end remote camera control during active video calls;
• Mounting Compatibility: Supports upside-down inverted wall/TV-top mounting with automatic digital image flip function to correct reversed video output;
• Privacy Protection: Mechanical sliding camera lens shutter for physical video signal blocking during confidential closed-door executive meetings, with LED status indicator to show camera active/inactive state.

Video Codecs & Dual-Stream Presentation Content Sharing

• Supported Video Compression Standards: H.264 AVC high-efficiency video encoding, fully compliant with industry-standard H.323 and SIP telepresence call protocols;
• Dual Independent Video Outputs: Two separate HDMI video output ports supporting simultaneous dual-display conference room layouts (one screen for live participant video grid, second dedicated screen for presentation slides and shared document content)Cisco Russ...;
• Dual-Stream Content Sharing Protocol Support: H.239 dual-stream for H.323 calls, BFCP binary floor control protocol for SIP calls. Presentation sharing maximum supported resolution up to WXGA 1280×768 at 5fps, with simultaneous live participant HD video stream active during content presentation;
• Bandwidth Support & Adaptive Bitrate Control: Maximum point-to-point call bandwidth up to 6 Mbps, integrated dynamic adaptive bitrate algorithm that automatically adjusts video resolution, frame rate and compression quality in real time based on available LAN/WAN network bandwidth to eliminate video freezing and audio dropoutsCisco;
• Supported Video Input/Output Resolutions: Full range of standard display formats including VGA, SVGA, XGA, WXGA, HD720p, Full HD 1080p at 30fps and 60fps refresh rates.

Optional Embedded MultiSite Multiparty Conferencing Feature

Licensable optional MultiSite embedded multiparty conferencing upgrade eliminates the requirement for external dedicated multipoint control unit (MCU) media bridges:

• Adaptive SIP/H.323 MultiSite mixed-protocol conferencing capability, supporting simultaneous H.323 and SIP endpoints within a single conference call;
• Maximum concurrent participant capacity: 4-way simultaneous video conferencing;
• Resolution performance tiers based on participant count:
  • 3 active participants: Up to 720p30 HD resolution per individual video stream;
  • 4 active participants: Up to 576p30 standard definition resolution per individual video stream;
• Full independent audio and video transcoding for each connected conference participant, automatic intelligent participant layout switching based on active speaker detection;
• Supports mixed-mode conference calls combining remote video participants, dial-in audio-only participants and local room participants connected to the SX20 endpoint.

3. Enterprise-Grade Integrated Audio System & Multi-Stage Digital DSP Processing

The SX20 Quick Set features a fully featured multi-input professional audio stack optimized for medium-sized conference rooms, paired with a dedicated multi-core digital audio signal processing (DSP) engine with independent per-channel acoustic echo cancellation, advanced background noise suppression and automatic voice volume balancing.

Audio Input Interfaces (Four Independent Audio Input Channels)

1. Two 4-pin 3.5mm mini-jack microphone input ports, supporting dual Table Microphone 20 conference microphones for extended voice pickup coverage in larger rectangular conference rooms;
2. One 4-pin 3.5mm mini-jack stereo line input port for connecting external audio playback devices, media players and auxiliary sound sources;
3. Embedded HDMI camera audio input channel to capture audio signals from the connected Precision 40 camera unit.

Advanced Multi-Stage AI Audio DSP Processing Suite

1. Intelligent Background Noise Suppression: Multi-stage digital filtering algorithm to eliminate disruptive ambient background sounds including HVAC fan hum, keyboard tapping, paper rustling and idle office chatter without distorting natural human speech waveforms;
2. Full Digital Acoustic Echo Cancellation (AEC): Dual independent echo canceller circuits paired with ultra-tight active lip synchronization to eliminate audio-video synchronization delay and remote call echo feedback;
3. Automatic Gain Control (AGC): Real-time balancing of inconsistent speaker voice volume levels to deliver uniform consistent audio loudness to all remote meeting participants;
4. True Full-Duplex Simultaneous Two-Way Audio Transmission: Supports simultaneous speaking from local and remote participants without audio cut-off or muting artifacts;
5. Built-In Self-Hear Monitoring Function: Local microphone audio preview capability for administrators to test audio input levels and verify microphone functionality before scheduled meetings;
6. Additional Professional Audio Optimizations: Dedicated de-reverberation filter to reduce echo in large hard-surface conference rooms, independent music mode DSP preset optimized for high-fidelity presentation audio playback.

Supported Audio Codecs & Audio Output Interfaces

• Wideband HD Voice Codec Support: G.711a/μ, G.722 wideband 20kHz HD voice, G.722.1, G.728, G.729A/B, AAC-LD and Opus stereo lossless voice transmission formatsCisco Russ...;
• Dual Independent Audio Output Channels:
  1. One 4-pin 3.5mm stereo mini-jack line output port for connecting external conference room stereo speakers, wired headsets and hearing induction loop assistive audio systems for accessibility compliance;
  2. Embedded HDMI digital audio output channel to transmit synchronized meeting audio signals to the connected flat-panel display built-in speakers.

4. Hardware Interfaces, Network Security, Power & Physical Specifications

Full Hardware Connectivity Interfaces

All ports are positioned on the rear panel of the codec chassis with concealed cable routing design for clean conference room cable management:

1. Network Port: Single RJ45 Gigabit Ethernet (10/100/1000 Mbps) wired LAN port supporting IEEE 802.3af Power over Ethernet (PoE), enabling single cable delivery of both network data transmission and device power supply to eliminate separate AC power outlet requirements near wall-mounted displays;
2. Video I/O Ports: Two independent HDMI 2.0 output ports for dual-display conference room layouts; one HDMI input port for camera audio/video signal reception;
3. Audio I/O Ports: Two microphone mini-jack inputs, one stereo line input, one stereo line output as detailed in the audio section above;
4. USB Interfaces: One USB-A 2.0 port reserved for future peripheral expansion and local firmware upgrade media; one Micro USB service debugging port for batch firmware upgrades, centralized bulk device configuration deployment and remote IT troubleshooting by enterprise IT administrators;
5. Control & Security Interfaces: Factory reset pinhole for full device configuration restoration to factory default settings; Kensington security lock slot for physical anti-theft protection of the codec chassis installed in shared conference room spaces.

Network Security & QoS Compliance Standards

• Dual-stack IPv4 / IPv6 network protocol support, DHCP automatic dynamic IP address assignment via PoE wired Ethernet;
• Enterprise network security standards compliance: IEEE 802.1X EAP device authentication for secure corporate LAN access, IEEE 802.1Q VLAN tagging for segmented corporate network deployment, IEEE 802.1p Layer 2 QoS priority marking to prioritize real-time voice and video media traffic over standard office data packets to eliminate meeting audio/video latency;
• End-to-End Encryption Support: H.235 v3 standard AES 128/256-bit SRTP media stream encryption for all SIP/H.323 call signaling traffic and meeting audio/video media payloads; automatic encryption key generation and secure exchange between call endpoints; full dual-stream presentation sharing encryption support;
• Secure Remote Device Administration: Encrypted management access via SSH secure shell, HTTPS TLS encrypted web administration portal, XML/SOAP remote API interfaces for integration with third-party room control systems;
• Digital Certificate Management Support: Manufacturer-Installed Certificates (MIC), Locally Significant Certificates (LSC), CAPF Certificate Authority Proxy Function authentication for seamless CUCM on-premises unified communications integration; X.509 DER/Base64 digital certificates with 1024/2048-bit key size compatibility;
• Firewall Traversal Support: Fully compatible with Cisco Expressway-C / Expressway-E cross-firewall traversal gateways and industry-standard H.460.18 / H.460.19 protocols for secure off-site remote endpoint registration across corporate network firewalls via PoE wired network infrastructure.

Power Supply Specifications

• Primary Power Input Options: Dual power delivery modes for flexible conference room deployment:
  1. IEEE 802.3af PoE power supply via the Gigabit Ethernet LAN port (primary recommended deployment method);
  2. External universal auto-sensing AC power supply adapter as secondary backup power input;
• AC Mains Input Compatibility: External power supply supports universal global mains voltage range 100–240 VAC, 50/60 Hz for worldwide enterprise deployment across all regional power grid standards;
• Power Consumption Metrics: Maximum full-load active meeting operating power consumption 40 Watts for combined codec + Precision 40 camera operation; low-power energy-efficient standby power draw compliant with EU Class B energy consumption standards.

Environmental Operating & Physical Dimensions

• Operating Environmental Range: Ambient operating temperature range 0°C to 40°C (32°F to 95°F); relative humidity 10%–90% non-condensing humidity for stable 24/7 continuous conference room operation;
• Storage & Transport Environmental Range: Storage and shipping temperature range -20°C to 60°C (-4°F to 140°F), relative humidity 10%–90% non-condensing humidity for warehouse inventory storage and inter-region equipment transportation;
• Chassis Physical Dimensions (Codec Main Unit): Width 300 mm, Height 180 mm, Depth 34 mm; total codec unit weight approximately 1.4 kg; full complete Quick Set kit (codec, Precision 40 camera, microphone, remote, cables and mounting hardware) total shipping weight approximately 3.2 kg;
• Mounting Options: Standard wall mounting bracket kit included with all Quick Set bundles; chassis designed for placement on top of flat-panel displays or permanent wall mounting with optional reinforced heavy-duty wall bracket accessories.

5. Enterprise Call Control & Intelligent Meeting Workflow Functions

Standard Core Enterprise Call Feature Set

• Supported Call Types: Point-to-point direct HD video calls, ad-hoc multi-party embedded MultiSite 4-way video conferencing (requires licensed MultiSite upgrade);
• Complete Call Control Operations: Call hold, attended call transfer, blind call transfer, local microphone mute, local camera privacy shutter control, customizable speed dial shortcuts for frequently contacted conference rooms and remote participants;
• Directory & Call Log Management: Full corporate LDAP directory lookup compatibility integrated with Cisco TelePresence Management Suite (TMS) and CUCM; unlimited local contact directory storage capacity; persistent local call history storage for received, placed and missed calls with full timestamp records for audit tracking;
• Supplementary Telephony Collaboration Features: Integrated visual voicemail support, URI dialing, RFC 4733 DTMF tone transmission for PSTN dial-in participants; NTP network time synchronization for accurate meeting log timestamps, DNS service discovery, automatic gatekeeper discovery for legacy H.323 endpoint interoperability.

Intelligent Meeting Workflow Automation Functions

1. OBTP (One Button To Push) Scheduled Meeting Join: Single-touch one-click meeting join functionality for all pre-scheduled Webex cloud meetings and CUCM/TMS scheduled on-premises telepresence meetings; fully compatible with both cloud-hosted and on-premises enterprise wired PoE deployment architectures;
2. Passive Infrared Motion Sensor Automatic Wake-Up: Built-in passive motion detection sensor automatically powers on the telepresence codec and camera unit when human presence is detected inside the conference room, eliminating manual power-on operations before scheduled meetings;
3. Multi-Platform Meeting Interoperability: Native certified support for Cisco Webex Meetings, Microsoft Teams Rooms, Zoom for Cisco Rooms and Google Meet conference sessions without requiring auxiliary external AV switching hardware or third-party media bridges;
4. Multi-Mode Device Control Interfaces: Full conference function control via three independent user interface methods:
   • TRC6 infrared remote control with on-screen graphical user interface (OSD) menu navigation;
   • Optional Cisco Touch 10 standalone touchscreen control unit (sold separately) for simplified touch-based meeting operation;
   • Wireless mobile device control via Cisco Intelligent Proximity mobile app for compatible smartphones and tablets (radio-enabled K9 variant exclusive feature);
5. Third-Party Room Automation Integration: Supports wired control linkage with third-party conference room peripherals including auxiliary secondary display screens, conference room lighting systems, motorized window blinds and external audio processors via standardized xAPI control system interfaces and fully customizable automation macros for end-to-end automated conference room workflow management;
6. Large-Scale Conference Digital Whiteboard Content Sharing: Supports offline whiteboard canvas data transmission and real-time presentation slide annotation during active video calls; annotated files can be saved to Cisco Webex cloud storage and securely shared with meeting participants via email or mobile device links;
7. Digital Signage & Kiosk Mode: Configurable automatic screen scheduler to display corporate brand announcements, office workspace calendars, meeting room occupancy information and company safety briefings on the connected flat-panel display when no active meeting is running.

6. Supported Call Control & Enterprise Compatibility Platforms

1. Cloud Deployment Architecture: Cisco Webex Cloud Service, centralized global device full-lifecycle management via cloud-based Webex Control Hub administrator portal (device registration supported exclusively via PoE Gigabit Ethernet wired network infrastructure);
2. On-Premises Unified Communications Deployment: Cisco Unified Communications Manager (CUCM) v8.6 and later stable official software releases with dedicated SX20 hardware compatibility packs;
3. Remote Registration Firewall Traversal Gateway: Cisco Expressway-C / Expressway-E cross-firewall traversal gateways for secure off-site remote endpoint registration across corporate network firewalls via PoE wired network infrastructure;
4. Third-Party Interoperability Compliance: Fully standards-compliant SIP and H.323 telepresence communication protocols, compatible with all industry-standard third-party video conferencing platforms, IP PBX telephone systems and multi-vendor telepresence endpoint hardware from competing collaboration vendors.

7. Core Deployment Advantages of Radio-Enabled CTS-SX20N-P40-K9 (SX20 Quick Set N Generation K9 Variant with Precision 40 Camera)

1. Integrated dedicated Intelligent Proximity audio signal transmitter hardware built into the codec chassis enables seamless wireless mobile content casting and smartphone pairing functionality, eliminating the requirement for separate external auxiliary speakers needed on legacy non-N generation CTS-SX20-P40-K9 models to support proximity wireless signal transmission;
2. Compact low-profile all-in-one codec single-body design consolidates high-performance telepresence codec, integrated audio processing circuits and built-in proximity wireless hardware into one lightweight chassis unit, removing separate standalone codec boxes, external camera control peripherals and scattered loose wiring harnesses to drastically simplify medium conference room AV deployment and reduce visible cable clutter in professional meeting spaces;
3. IEEE 802.3af PoE single-cable combined power and data transmission eliminates the need for dedicated separate AC power wall outlets near wall-mounted conference room displays, cutting on-site electrical installation labor costs and simplifying standardized network wiring for mass enterprise medium conference room rollout deployments;
4. Balanced Precision 40 PTZ camera with 4x optical zoom and 70° horizontal field of view provides flexible hardware configuration matching standard medium rectangular conference room physical dimensions and layout requirements, delivering full panoramic room participant framing for remote meeting attendees without expensive multi-camera installation setups;
5. Native multi-vendor meeting platform certification fully supports Cisco Webex, Microsoft Teams Rooms, Zoom and Google Meet without proprietary platform lock-in, perfectly suited for modern hybrid enterprise collaboration ecosystems where internal employees utilize multiple competing third-party conferencing applications for internal and client-facing meetings;
6. Optional licensed embedded MultiSite 4-way multiparty conferencing feature eliminates capital expenditure costs for external dedicated MCU media bridge hardware deployments for organizations requiring frequent small-group multi-participant video conferences, reducing overall enterprise telepresence infrastructure total cost of ownership (TCO);
7. Dual independent HDMI video output ports support flexible dual-display conference room layout designs, enabling dedicated separation of live participant video grid content and presentation slide/document sharing content across two separate flat-panel displays to deliver enhanced meeting viewing experience for all in-room conference participants;
8. Centralized mass wired PoE device fleet management via Webex Control Hub or CUCM simplifies bulk firmware batch upgrades, batch standardized configuration template deployment, real-time distributed endpoint hardware health monitoring and remote IT troubleshooting, drastically reducing daily enterprise IT administration workload for large-scale distributed medium conference room endpoint fleets across global corporate office locations;
9. Minimalist premium matte silver aluminum front panel industrial design harmonizes seamlessly with modern corporate executive office, medium-sized professional conference room and corporate training auditorium interior aesthetics, occupying minimal space on top of flat-panel displays or wall-mounted surfaces and eliminating bulky scattered separate AV hardware visual clutter in professional enterprise meeting spaces.

8. Supplementary Product Specification Notes

1. SKU & PID Naming Definition Recap:
   • CTS-SX20N-P40-K9 = Cisco TelePresence SX20 Quick Set revised N hardware generation mid-size conference room video conferencing endpoint codec unit, factory integrated with built-in Intelligent Proximity wireless audio signal transmitter hardware, bundled with Precision 40 4x optical zoom PTZ camera;
   • K9 = Encrypted secure enterprise firmware variant with full AES-SRTP media stream encryption support, radio-enabled hardware platform supporting wireless mobile content casting via Cisco Intelligent Proximity; Matching high-security No-Radio counterpart model: CTS-SX20N-P40-NR-K9 with all wireless proximity signal transmitter hardware factory removed from the codec chassis. All core video, audio, codec call processing and multi-site conferencing features remain fully identical between K9 and NR variants; the only permanently disabled functionality on NR hardware units is wireless mobile content casting and smartphone pairing via Cisco Intelligent Proximity.
2. Regulatory Compliance Certifications: Fully compliant with global international industry certification standards including EU Low-Voltage Directive 2006/95/EC (IEC/EN 60950-1), EMC Directive 2004/108/EC, UL 60950-1, CAN/CSA-C22.2 No. 60950-1, FCC CFR 47 Part 15 Class A electromagnetic emissions certification and NRTL global product safety approval.
3. Factory Hardware Warranty Terms: Standard 1-year limited hardware warranty coverage for brand-new factory-sealed CTS-SX20N-P40-K9 complete Quick Set video conferencing systems purchased through official Cisco authorized global distribution channel partners. Important lifecycle limitation note: The product EoS/EoSS status restricts active hardware replacement warranty service eligibility for all hardware units purchased after the October 29, 2019 official End-of-Sale cutoff date.
4. UNSPSC Classification Code: 43191500 (Mid-size conference room compact integrated codec and Precision 40 PTZ camera telepresence video conferencing Quick Set endpoint, PoE supported, radio-enabled enterprise encrypted K9 variant).