Cisco AIR-AP1231G-x-K9 Full English Product Description
1. Short Official Part & License Label
AIR-AP1231G-x-K9: Cisco Aironet 1231G Autonomous Indoor Access Point, Single-Band 2.4 GHz 802.11b/g, Runs Cisco Autonomous IOS, Dual RP-TNC External Antenna Connectors (Antennas Sold Separately), 10/100BASE-T Ethernet, Supports 802.3af PoE or Local DC Power, Convertible to LWAPP Lightweight Mode, Multi-SSID VLAN Segmentation, Enterprise WPA/WPA2 Security, Rugged Metal Enclosure, End-of-Sale Legacy Enterprise Connectorized Wireless AP.
(Suffix "x" denotes regional regulatory domain: A=USA, E=Europe, K=Korea, etc.)
2. Full Product Overview
The Cisco AIR-AP1231G-x-K9 belongs to the Aironet 1200 Series, a legacy enterprise-grade autonomous wireless access point built with a durable metal chassis. It ships preloaded withCisco Autonomous IOS, enabling fully standalone operation without a wireless LAN controller. Administrators may upgrade the firmware image to convert the AP into lightweight LWAPP mode (equivalent ordering PID AIR-LAP1231G-x-K9) for centralized management by AireOS CUWN wireless controllers.
This platform operates on the 2.4 GHz ISM band supporting IEEE 802.11g (54 Mbps OFDM) with backward compatibility for 802.11b clients. Distinctively, it provides two RP-TNC antenna ports allowing customers to deploy a wide selection of external directional, omnidirectional or high-gain antennas to tailor RF coverage for warehouses, manufacturing floors, retail spaces and large open offices. Unlike 1100-series APs with fixed internal antennas, the 1231G delivers flexible RF planning capabilities.
Power options include IEEE 802.3af Power over Ethernet to simplify ceiling and wall deployments, plus an optional external 48 VDC power supply. It supports multi-SSID virtual WLANs, enterprise authentication suites, hardware-assisted WPA2 encryption, WMM voice QoS, and Wireless Domain Services (WDS) for Layer 2 roaming across autonomous AP fleets.
Lifecycle Status: AIR-AP1231G-x-K9 reached End-of-Sale (EoS) and End-of-Support (EoL). No official new firmware releases or feature development. Successor models include 1242AG dual-band series and modern Wi-Fi 6 Catalyst access points.
Key Differentiator vs AIR-AP1131AG-x-K9: Single-band 2.4 GHz only, external RP-TNC antenna ports and rugged metal housing; 1131AG uses integrated internal antennas and supports simultaneous dual-band 2.4G+5G. Difference from AIR-LAP1231G-x-K9: AIR-AP1231G boots autonomous IOS by default; LAP variant is factory lightweight LWAPP requiring a wireless controller.
3. Complete Hardware Physical & Interface Specifications
Form Factor & Mechanical
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Form Factor: Rugged metal indoor enclosure, wall / ceiling rail mountable
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Dimensions: 221 mm × 168 mm × 46 mm (8.7” × 6.6” × 1.8”)
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Unit Weight: 0.91 kg (2.0 lbs)
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Mounting: Keyhole slots, compatible with standard ceiling tile brackets; security lock provision
Rear Panel Interface Layout
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1× RJ45 10/100BASE-T Ethernet port, supports 802.3af PoE
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DC power barrel jack for optional 48 VDC external power injector
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RJ45 Console port for local CLI access and recovery
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2× RP-TNC female antenna connectors (2.4 GHz diversity, antennas not included)
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Mode reset pushbutton for factory default restoration
LED Status Indicators
Three top-panel status LEDs:
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Status: System boot state, operational health and fault alerts
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Ethernet: Link integrity and traffic activity
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Radio: Wireless transmit/receive activity
Power & Environmental Parameters
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Power Options: IEEE 802.3af PoE or external 48 VDC power supply
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Typical power consumption: 10 W
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Operating Temperature: 0°C to 40°C (32°F to 104°F)
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Storage Temperature: -20°C to 65°C (-4°F to 149°F)
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Humidity: 10%–90% non-condensing relative humidity
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Regulatory Certifications: UL 60950, CE, FCC Class B, Wi-Fi Alliance certified
Radio Hardware Specifications
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Standards: IEEE 802.11b / 802.11g
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Supported Data Rates: 54, 48, 36, 24, 18, 12, 9, 6 Mbps (802.11g); 11, 5.5, 2, 1 Mbps (802.11b)
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Transmit power: Software configurable, capped per regional regulatory domain
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Antenna Interface: Dual RP-TNC diversity ports (external antennas sold separately)
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Maximum simultaneous BSSIDs (SSIDs): Up to 16
Embedded Hardware Resources
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Processor: IBM PowerPC 405 200 MHz
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RAM: 16 MB
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Flash Storage: 8 MB for IOS firmware and configuration
4. Core Autonomous IOS WLAN Feature Suite
1. RF Management & External Antenna Flexibility
Adjustable transmit power, dynamic rate scaling, beacon interval tuning, 802.11g protection mode for mixed b/g client environments, diversity receive for improved multipath performance. Supports custom antenna gain configuration for accurate RF planning.
2. Multi-SSID Virtual WLAN Segmentation
Multiple isolated SSIDs, independent VLAN tagging per WLAN, SSID broadcast enable/disable, wireless client isolation between users on the same SSID.
3. Enterprise Wireless Security Suite
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Encryption: WEP 40/128-bit, WPA (TKIP), WPA2 (AES-CCMP)
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Authentication: Open, Shared Key, 802.1X, LEAP, PEAP, EAP-TLS, EAP-FAST
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Additional security: MAC address filtering, rogue AP detection, broadcast key rotation
4. Voice & Multimedia QoS
Wi-Fi Multimedia (WMM) traffic prioritization, 802.1p CoS mapping, traffic classification optimized for VoIP over wireless deployments.
5. Wireless Mobility
Wireless Domain Services (WDS) enabling fast Layer 2 roaming between autonomous APs; proxy Mobile IP support for Layer 3 mobility.
6. Management & Diagnostics
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Administration: Embedded HTML web GUI, IOS CLI via SSH, Telnet or serial console
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Monitoring: SNMPv2c, syslog, real-time client association tables, radio statistics
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Firmware upgrade via TFTP; supports bidirectional conversion between autonomous IOS and LWAPP lightweight images
7. Network Integration
Native interoperability with Catalyst switched infrastructure, trunk VLAN support, DHCP relay, static routing capabilities.
5. Typical Deployment Scenarios
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Standalone autonomous 2.4 GHz wireless coverage for warehouses, manufacturing facilities and large retail sites requiring external directional antennas
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Legacy distributed autonomous WLAN architecture without centralized wireless controllers
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Environments with high density of legacy 2.4 GHz IoT, barcode scanners and older Wi-Fi clients
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Migration staging platform for converting autonomous AP fleets to lightweight controller-managed CUWN architecture
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Lab environments for legacy Cisco autonomous IOS wireless configuration and RF planning training
6. Short Sales Listing Tagline
Cisco AIR-AP1231G-x-K9 Legacy Aironet 1231G Autonomous Indoor Access Point, Single-Band 2.4GHz 802.11b/g, Runs Cisco Autonomous IOS, Dual RP-TNC External Antenna Ports (Antennas Not Included), Rugged Metal Enclosure, 10/100BASE-T with 802.3af PoE, Multi-SSID VLAN Tagging, WPA/WPA2 Enterprise Security, Convertible to LWAPP Lightweight Mode, End-of-Sale Connectorized Enterprise Wireless Access Point
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