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by Cisco
Product Line: Cisco C1861W-SRST-F/K9
Product Type: router
Original price $0.00 - Original price $701.00
Original price
$0.00 - $701.00
Current price $701.00
Title: Used

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Product Description

The C1861W-SRST-F/K9 Cisco integrates a WLAN slot for wireless connectivity and supports both SRST and CME, accommodating up to 8 users. It features 4 FXO ports and 4 FXS ports, with 256 GB DRAM and 128 MB of flash memory, ensuring efficient call processing and data storage. Power requirements are met with an AC input voltage of 100 to 240 VAC, and it operates within a temperature range of 0 °C to 40 °C, making it suitable for various environments.

Key Feature for the C1861W-SRST-F/K9

  • What PSTN interfaces are available on this device?
    The device features 4 FXO ports for PSTN interfaces.
  • Does the product support SRST?
    Yes, SRST support is available.
  • How many users can this hardware support?
    It can support up to 8 users.
  • Is there WLAN capability?
    Yes, there is WLAN slot availability.
  • What is the RAM capacity of the device?
    The device has 256 GB DRAM.
  • What type of power input does the device require?
    AC Input Voltage ranges from 100 to 240 VAC, with an AC Input Current of 4 to 2 A.
  • How many FXS ports does the device have?
    There are 4 FXS ports available on the device.
  • What are the operating temperature limits?
    The minimum operating temperature is 0 °C, and the maximum is 40 °C.
  • What flash memory capacity does the device feature?
    The device is equipped with 128 MB of flash memory.
  • What are the noise level specifications?
    The noise level is 34 dBA at 25.6 °C.

Product Review

The Cisco C1861W-SRST-F/K9 integrates key features such as WLAN support, SRST and CME capabilities, making it a versatile choice for small-scale deployments. However, its limitation to 8 users and 4 FXO ports might restrict its application in larger, more demanding environments. Additionally, while it offers a reasonable balance between power consumption and performance, its 256 MB DRAM and 128 MB flash memory could be insufficient for advanced applications or future expansions.


The Cisco C1861W-SRST-F/K9 is a versatile integrated services router designed to meet the needs of small to medium-sized businesses. This device combines voice, data, and wireless capabilities, providing a comprehensive communication solution. It supports Survivable Remote Site Telephony (SRST) and Cisco Unified Communications Manager Express (CME), ensuring continuous operation and connectivity for voice services in the event of WAN failures. Key hardware specifications of the Cisco C1861W-SRST-F/K9 include: - WLAN slot availability for wireless connectivity options. - Support for SRST and CME, enhancing voice communication reliability and flexibility. - Four Foreign Exchange Office (FXO) ports for connecting to the Public Switched Telephone Network (PSTN), allowing direct lines to the external telephone network. - Capability to support up to 8 users, making it suitable for small office environments. - Includes four Foreign Exchange Station (FXS) ports for direct connection of standard telephones, fax machines, or analog devices. - Equipped with 256 MB of DRAM and 128 MB of flash memory, facilitating smooth operation and sufficient storage for firmware and configuration files. - The AC input voltage ranges from 100 to 240 VAC, with an input current of 4 to 2 A, accommodating a wide variety of power sources and ensuring global usability. - Power dissipation varies, consuming 80 W without IP phone support and increasing to 175 W when IP phone support is utilized. Additional specifications highlight the device's operational parameters and physical characteristics: - It operates within a temperature range of 0 °C to 40 °C and can function at a relative humidity between 10% (non-condensing) to 85% (non-condensing), ensuring reliability across diverse environmental conditions. - The operating altitude is specified up to 6000 ft at 31 °C, indicating its suitability for use in high-altitude locations. - Dimensions are provided as 2.625 inches in height, 10.5 inches in width, and 11.05 inches in depth, with a rack height of 1.5 RU, making it compact and rack-mountable for efficient space utilization. - Weighing 8 lbs, it is relatively lightweight, facilitating easy installation and reconfiguration as needed. - Noise level is maintained at 34 dBA at 25.6 °C, ensuring a quiet operation that is ideal for office environments. - Compliance with safety standards including CAN/CSA-C22.2 No. 60950-1, EN 60950-1, and UL 60950-1, affirms its safety for use in various regions. - The device features one console port for management and six voicemail ports, enhancing its capabilities as a voice messaging solution. In summary, the Cisco C1861W-SRST-F/K9 integrates essential networking functions with voice and wireless capabilities in a single device, supporting small to medium-sized businesses with a reliable, scalable, and efficient communication solution. Its comprehensive feature set, combined with operational flexibility, makes it an ideal choice for offices seeking to streamline their communication infrastructure.


Part Number and Manufacturer Cisco C1861W-SRST-F/K9
WLAN Availability Yes
Support for SRST Yes
Support for CME Yes
Public Switched Telephone Network Interface Four FXO Ports
User Capacity 8
FXS Port Count 4
Memory Capacity 256 MB DRAM
Storage Memory 128 MB
Input Voltage (AC) 100 to 240 VAC
Input Current (AC) 4 to 2 A
Energy Consumption 80 W without IP Phone, 175 W with IP Phone
Lowest Operating Temperature 0 °C
Highest Operating Temperature 40 °C
Minimum Humidity for Operation 10% (Non-Condensing)
Maximum Humidity for Operation 85% (Non-Condensing)
Maximal Operational Altitude 6000 ft @ 31 °C
Dimensions (Height x Width x Depth) 2.625 x 10.5 x 11.05 Inches
Unit Rack Height 1.5 RU
Device Weight 8 lbs
Sound Emission 34 dBA @ 25.6 °C
Compliance with Safety Regulations CAN/CSA-C22.2 No. 60950-1, EN 60950-1, UL 60950-1
Number of Console Ports 1
Voicemail Port Availability 6

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