© 2011 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 12 of 20
Feature Description
Voice features
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Echo cancellation: This feature cancels echo on tail circuits up to 64 msec (configurable tail length).
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Silence suppression and voice activity detection (VAD): Bandwidth is used only when someone is
speaking. During silent periods of a phone call, bandwidth is available for data traffic.
●
Comfort-noise generation: This feature reassures the phone user that the connection is being
maintained, even when no voice packets are being transmitted.
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Caller ID support: Per-port caller ID (with per-call unblocking) is configurable over analog FXS.
●
Dial-plan mapping: This feature simplifies configuration and management through automatic
mapping of dialed phone numbers to IP addresses.
Voice port-specific features
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FXS: FXS provides battery polarity reversal detection and initiation for disconnect supervision and
far-end answer supervision.
●
ISDN BRI network side and phantom power: The BRI port provides the ability to connect a private
branch exchange (PBX) or private automatic branch exchange (PABX) configured as user side
directly to the router. It also provides phantom power to accommodate equipment that requires it.
●
LED indicators show voice-processing resources and port status.
System Specifications
Tables 9 and 10 list the system specifications for the Cisco 880 Series Routers.
Table 10. System Specifications
Feature Description
Default DRAM
●
256 MB on Cisco 880 Series data models
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512 MB on Cisco 880 Series WLAN, Embedded 3G WWAN, and SRST/CUBE models
Maximum DRAM
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768 MB on Cisco 880 Series data and CUBE models
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1024 MB on Cisco 880 Series WLAN
Default and maximum flash memory
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128 MB on Cisco 880 Series data, Embedded 3G WWAN and CUBE models
●
256 MB on Cisco 880 Series SRST models
WAN
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Fast Ethernet
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Multi-mode VDSL2 and ADSl2/2+ over ISDN with ISDN backup
●
Multi-mode VDSL2 and ADSl2/2+ over POTS
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ADSL2/2+ over ISDN with ISDN backup
●
ADSL2/2+ over POTS with ISDN backup
●
VDSL2 over POTS with ISDN backup
●
G.SHDSL (2- and 4-wire support) with ISDN backup
●
Fast Ethernet and 3G WAN for Code Division Multiple Access (CDMA) and high-speed downlink
packet access (HSDPA)
LAN switch Managed 4-port 10/100BASE-T with autosensing MDI/MDX for auto crossover
Standard 802.11g/n access point based
on IEEE 802.11n draft 2.0 standard
Optional on all models
Console or auxiliary port RJ-45
One USB 1.1 port for advanced
security features such as security
tokens or USB flash memory
●
One USB 1.1 port on Cisco 880 Series Routers
●
USB devices supported:
◦
USB eTokens
◦
USB flash memory
Note: USB 1.1 port cannot be used for connecting external devices other than those specified at:
http://www.cisco.com/en/US/prod/collateral/modules/ps6247/product_data_sheet0900aecd80232473.ht
ml.
ISDN BRI S/T Available on:
●
Cisco 886, 886VA, 887, 887V, and 888 for out-of-band management and dial backup or primary
3G express card modem Available on:
●
Cisco 881G, 886G, 887G, 887VG, and 888G for out-of-band management and backup or primary
●
Cisco 888G for out-of-band management and backup or primary
Note: Cisco 887VG currently ships with HSPA modem only.
External power supply Universal 100 to 240 VAC input; 60W, 12 VDC output
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