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Feature
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Specification
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Default DRAM
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128 MB
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Maximum DRAM
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256 MB
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Default Flash Memory
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24 MB (28 MB for Advanced IP Services Feature Set)
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Maximum Flash Memory
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52 MB
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WAN
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• 871: 100 MB Ethernet
• 876: ADSL over ISDN (ADSL2/ADSL2+ Annex B)
• 877: ADSL over analog telephone lines (ADSL2/ADSL2+ Annex A and Annex M (except UK Mask))
• 878: G.SHDSL (2- and 4-wire support)
• 3 Mbps IMIX aggregate performance for Cisco 878
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LAN Switch
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Managed 4-port 10/100BASE-T with autosensing MDI/MDX (Media Device In/Media Device Cross Over) for autocrossover
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802.11b/g WLANs
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Optional on all models
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Console Port
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RJ-45
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USB 2.0 Ports For Advanced Security Features Such as Security Tokens
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• 2 USB 2.0 ports on Cisco 871 only
• USB 2.0 ports cannot be used for connecting external devices other than those specified for the Cisco 871
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ISDN Basic Rate Interface (BRI) S/T
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Only available on:
• Cisco 876 for out-of-band management and dial backup
• Cisco 878 for out-of-band management
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LEDs
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PPP, VPN, ADSL, G.SHDSL, WLAN, LAN
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External Power Supply
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Universal 100 to 240 VAC
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Inline PoE
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Optional external adapter for inline PoE for IP phones or external wireless access points
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DSL Specifications
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• ST-Microelectronics 20190 Chipset
• Supports ADSL over basic telephone service with Annex A and Annex B ITU G. 992.1 (ADSL), G.992.3 (ADSL2), and G.992.5 (ADSL2+)
• Supports ADSL over basic telephone service with Annex M (except UK Mask) (extended upstream bandwidth) G.992.3 (ADSL2) and G.992.5 (ADSL2+)
• G.994.1 ITU G.hs
• Support for Reach-extended ADSL2 (G.922.3) Annex L
• Complies with T1.413 ANSI ADSL DMT issue 2
• DSL Forum TR-067
• The chipset does not provide interoperability with carrierless amplitude modulation/phase modulation (CAP)-based ADSL lines
• Annex A and Annex B are supported starting with Cisco IOS Software Release 12.4(4)T.
• Annex M (except UK Mask) is supported starting with the special Cisco IOS Software Release 12.4(11)XJ; and requires the CISCO877-M-K9 or CISCO877W-G-E-M-K9 SKU.
• The ADSL2 standard (ITU G.992.3) adds new features and functions targeted at improving ADSL performance and interoperability. In addition, the standard adds support for new applications, services, and deployment scenarios. Among the changes are improvements in data rate and reach performance, rate adaptation, improved diagnostics, and power enhancements. The conventional ADSL standard (ITU G.992.1) provides downstream data rates of up to 8 Mbps and upstream data rates of up to 0.8 Mbps, and ADSL2 provides higher downstream rates of up to 12 Mbps and upstream data rates of up to 1 Mbps.
• The ADSL2+ standard (ITU G.992.5) doubles the bandwidth used for downstream data transmission, effectively doubling the maximum downstream data rates, and achieving downstream data rates of up to 24 Mbps and upstream data rates of up to 1.5 Mbps.
• Cisco 877-M supports ITU G.992.3 Annex M (except UK Mask), and is optimized for PSD Mask EU-64 M9. Annex M adds capabilities for extended upstream bandwidth above 2.0Mbps. This allows carriers and enterprises to cover applications traditionally served by T1, E1, G.SHDSL without overhauling the transport infrastructure. Exact data rates vary depending on the distance from the DSL access multiplexer (DSLAM), DSLAM type, line card and chipset, and firmware, noise profile, quality of copper, etc. The reach-extended ADSL2 standard (G.992.3)
• Annex L increases performance on loop lengths greater than 16,000 feet from the Central Office.
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Wireless Specifications
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Data Rates Supported
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1, 2, 5.5, 6, 9, 11, 12, 18, 24, 36, 48, and 54 Mbps
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Receive Sensitivity
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802.11b
• -94dBm @ 1 Mbps
• -93dBm @ 2 Mbps
• -92dBm @ 5.5 Mbps
• -90dBm @ 11 Mbps
802.11g
• -92dBm @ 6 Mbps
• -90dBm @ 9 Mbps
• -89dBm @ 12 Mbps
• -87dBm @ 18 Mbps
• -85dBm @ 24 Mbps
• -81dBm @ 36 Mbps
• -76dBm @ 48 Mbps
• -73dBm @ 54 Mbps
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Maximum Transmit Power
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Note: Maximum power setting subject to changes by channel & by region depending on regulations
• 802.11b Average: 80mW (19dBm), Peak: (FCC) 245mW (23.9dBm)
• 802.11g Average: 50mW (17dBm)
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Immunity
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• IEC 61000-4-2:1995 Immunity to Electrostatic Discharges
• IEC 61000-4-3:1995 Immunity to Radio Frequency Electromagnetic Fields
• IEC 61000-4-4:1995 Immunity to Electrical Fast Transients
• IEC 61000-4-5:1995vImmunity to Power Line Transients (Surges)
• IEC 61000-4-6:1996 Immunity to Radio Frequency Induced Conducted Disturbances
• IEC 6100-4-8: 1003 Immunity to Power-Frequency Magnetic Fields (N/A for most of Cisco equipment)
• IEC 61000-4-11:1995 Immunity to Voltage Dips, Voltage Variations, and Short Voltage Interruptions
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Physical Dimensions and Weight
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Product dimensions:
• H x W x D = 2.00 x 10.25 x 8.50 in. (50.8 mm x 260.4 mm x 215.9.9 mm) (nonwireless models)
• H x W x D = 2.00 x 10.25 x 9.13 in. (50.8 mm x 260.4 mm x 231.9 mm) (wireless models with antenna connectors, excludes antennae)
• Weight: 2.10 lb (0.954 kg) maximum
Optional external PoE adapter dimensions:
• H x W x D = 1.13 x 4.00 x 10.25 in. (28.9 x 101.6 x 260.4 mm) (cables included)
• H x W x D = 1.13 x 4.00 x 4.25 in. (28.9 x 101.6 x 108 mm) (cables not included)
• Weight = 0.32 lb (0.143 kg)
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Power
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Product power specifications:
• AC input voltage: 100 to 240 VAC
• Frequency: 50 to 60 Hz
• Maximum output power: 26W
• Output voltages: 5 and 12V
Optional external Inline PoE adapter specifications:
• 802.3af compliant (Mid-span power delivered via pins 4,5,7 & 8)
• AC Input Voltage: 100 to 240 VAC
• Frequency: 50 to 60 Hz
• AC Input Current: 1A maximum
• Maximum output power: 80W
• Output voltage: 48 VDC
Optional external Inline PoE adapter specifications:
• 802.3af compliant (Mid-span power delivered via pins 4,5,7 and 8)
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Approvals and Compliance
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• UL 1950/ CSA 950-95, Third Edition
• IEC 950:Second Edition with Amendments 1, 2, 3, and 4
• IEC/EN 60950-1, 1st edition
• CS-03, Canadian Telecom Requirements
• FCC Part 68 U.S. Telecom Requirements
• AS/NZS 3260:1996 with Amendments 1, 2, 3, and 4
• ETSI 300-047
• TS 001 with Amendment 1
• EMI
• AS/NRZ 3548:1992 Class B\
• CFR 47 Part 15 Class B
• EN60555-2 Class B
• EN55022 Class B
• VCCI Class II
• ICES-003, Issue 2, Class B, April 1997S
• IEC 1000-3-2
• UNI 3.1/4.0 PVC
• ITU G.991.2 G.SHDSL
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Certifications
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Environmental Operating Range
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• Nonoperating temperature: -4 to 149°F (-20 to 65°C)
• Nonoperating humidity: 5 to 95 percent relative humidity (noncondensing)
• Nonoperating altitude: 0 to 15,000 ft (0 to 4570m)
• Operating temperature: 32 to 104°F (0 to 40°C)
• Operating humidity: 10 to 85%, relative humidity (noncondensing)
• Operating altitude: 0 to 10,000 ft (0 to 3000m)
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