United States$5,000,000+
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O
Olivia Mitchell
5
Powerful SRST router with stable voice and data. Ensures business continuity during WAN interruptions.
C1861W-SRST-F/K9
1861,WLAN,8-user SRST/CME,4FXS,4FXO,8xPOE,SP Svcs,HWIC slot
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C1861W-SRST-F/K9
- Description:
- 1861,WLAN,8-user SRST/CME,4FXS,4FXO,8xPOE,SP Svcs,HWIC slot
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- Brand:
- Cisco
- GTIN:
- 882658208157
- Condition:
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C1861W-SRST-F/K9 Overview
C1861W-SRST-F/K9 is a fixed, enterprise-grade router designed for branch office and small-to-medium business applications. It delivers secure connectivity with dual WAN interfaces and four LAN ports, supports integrated voice, video, and data services, and operates on an AC power supply while providing built-in VPN capabilities for remote access and site-to-site connectivity.
Engineered with modular capabilities through an optional expansion slot, this router offers robust firewall features and QoS support to maintain high performance and reliable throughput, up to 25 Mbps. Ideal for environments requiring integrated wireless (802.11n) support and comprehensive routing protocols such as OSPF, BGP, EIGRP, and RIP, C1861W-SRST-F/K9 ensures secure, resilient connectivity without redundant hardware options.
C1861W-SRST-F/K9 price is is available on request. Get immediate quote.
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C1861W-SRST-F/K9 Specifications
- Product Type
- Enterprise Router
- VPN Support
- IPSec / SSL VPN
- Power Source
- AC Power Supply
- Routing Protocols
- OSPF / BGP / EIGRP / RIP / Static Routing
- Broadband
- N/A
- Architecture
- Fixed
- WAN Configuration
- WAN
- WAN Ports
- 2 WAN
- LAN Ports
- 4 LAN Ports
- Ethernet Technology
- 10/100
- Wi-Fi Standard
- 802.11n
- Connectivity Type
- Wired / Wireless
- Network Protocols
- TCP/IP
- Remote Management
- CLI / HTTP / SNMP
- Compliance Standards
- FCC / CE
- Wireless Support
- Yes
- Speed/Capacity
- Fast Ethernet
- Firewall Features
- Yes
- Features
- VPN / Firewall / Integrated Wireless / QoS
- Use Case
- Branch Office / Enterprise
- Management
- Managed
- Form Factor
- Desktop
- Integrated Services
- Voice / Video / Data
- High Availability Support
- Not Supported
- Safety
- N/A
- EMC
- N/A
- Telecom
- N/A
- Throughput Capacity
- 25 Mbps
- QoS Features
- Supported
- Built-in Security Features
- Firewall / Intrusion Prevention / Malware Protection
- Expansion Slots
- EHWIC / WIC
- Modular Slots Available
- 1 Slot
- Stacking Capability
- No
- 5G Support
- No
- Memory
- 256 MB
- Flash Memory
- 256 MB
- Interface Ports
- RJ-45 / Combo Ports
- Power
- 65W
- Device Type
- Router
- Product Name
- Cisco 1861 Integrated Services Router Wireless
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
C1861W-SRST-F/K9 Use Case
Voice Service Continuity with Cisco C1861W-SRST-F/K9 SRST and PSTN Fallback
In a retail or branch environment, the Cisco C1861W-SRST-F/K9 router’s 8-user SRST/CME and 4FXO/4FXS ports deliver uninterrupted voice communications. When the WAN link fails, SRST maintains local call control for up to eight IP phones while FXO ports route calls over PSTN and FXS ports support analog devices. Outcome: zero voice downtime, consistent customer support, and reduced telephony operational risk.
Converged PoE and WLAN for Small Office Power and Connectivity
For remote or satellite offices, the Cisco C1861W-SRST-F/K9 leverages eight PoE ports plus integrated 802.11n WLAN to power IP phones and wireless access points without separate injectors. Built-in SP services deliver QoS for voice and data over a single infrastructure. Outcome: lower CapEx, faster deployments, and scalable converged network services.
Modular WAN Redundancy and Security with HWIC Slot on Cisco C1861W-SRST-F/K9
Enterprises requiring flexible WAN and secure site-to-site connectivity install a 4G LTE or additional Ethernet module in the Cisco C1861W-SRST-F/K9’s HWIC slot. Coupled with embedded firewall and VPN SP services, this setup provides automatic failover and end-to-end encryption. Outcome: resilient broadband access, enhanced security posture, and cost-effective bandwidth scaling.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 C1861W-SRST-F/K9 |  C1841-3G-V-SEC/K9 |  CISCO1841-2SHDSL |  C1861-SRST-B/K9 |  C1861-UC-4FXO-K9 | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Fixed | Fixed | Fixed | Fixed | Fixed |
| Broadband | N/A | N/A | DSL | N/A | N/A |
| Built-in Security Features | Firewall / Intrusion Prevention / Malware Protection | Firewall, Intrusion Prevention, Malware Protection | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention |
| Compliance Standards | FCC / CE | FCC, CE | FCC / CE | IEEE 802.3 / IEEE 802.3u / FCC / CE | FCC, CE |
| Connectivity Type | Wired / Wireless | Wired | Wired | Wired | Wired |
| Depth | N/A | 14.6 inches | N/A | 12 inches | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | N/A | FCC / CE | FCC, CE |
| Ethernet Technology | 10/100 | 10/100 | 10/100 | 10/100 | 10/100 |
| Expansion Slots | EHWIC / WIC | EHWIC | NIM | EHWIC | EHWIC |
| Features | VPN / Firewall / Integrated Wireless / QoS | VPN, Firewall, Intrusion Prevention, NAT, QoS, Routing | Voice / VPN / IPv6 Compatible / Firewall | VPN / Voice / NAT / Firewall | VPN / VoIP / Firewall / IPv6 Compatible |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 256 MB | 128 MB | 256 MB | 128 MB |
| Form Factor | Desktop | Desktop / Rack-mount | Rack-mount / Desktop | Desktop | Rack-mount |
| Height | N/A | 1.73 inches | N/A | 1.72 inches | N/A |
| High Availability Support | Not Supported | Not Supported | Not Supported | Not Supported | Supported |
| Integrated Services | Voice / Video / Data | Voice, VPN, Security | Voice / N/A | Voice | Voice |
| Interface Ports | RJ-45 / Combo Ports | RJ-45 | RJ-45 | RJ-45 | RJ-45 |
| LAN Ports | 4 LAN Ports | 2 LAN Ports | 2 LAN Ports | Modular LAN | N/A |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 256 MB | 128 MB | 256 MB | 512 MB | 256 MB |
| Modular Slots Available | 1 Slot | 2 Slots | 2 Slots | 2 Slots | 1 Slot |
| Network Protocols | TCP/IP | IPv4, IPv6, TCP/IP | IPv4 / IPv6 / ICMP / TCP / UDP | IPv4 / IPv6 / MPLS / VPN | IP |
| Power | 65W | 65 Watts | 95 W | 45 Watt | 60 Watt |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | Cisco 1861 Integrated Services Router Wireless | Cisco 1841 Integrated Services Router C1841-3G-V-SEC/K9 | CISCO1841-2SHDSL | Cisco 1861 Integrated Services Router with SRST | Cisco 1861 Unified Communications Integrated Services Router (C1861-UC-4FXO-K9) |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Integrated Services Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | CLI / HTTP / SNMP | Telnet, SSH, SNMP, HTTP/HTTPS | Telnet / SSH / SNMP | Telnet / SSH / SNMP | Telnet, SSH, SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / BGP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / BGP / Static Routing | OSPF / EIGRP / RIP / Static Routing |
| Safety | N/A | N/A | N/A | UL / CE / RoHS | UL, cUL |
| Speed/Capacity | Fast Ethernet | Fast Ethernet | N/A | Gigabit | N/A |
| Stacking Capability | No | No | No | No | No |
| Telecom | N/A | N/A | N/A | N/A | FCC Part 68 |
| Throughput Capacity | 25 Mbps | 33 Mbps | 25 Mbps | 0.035 Gbps | 0.025 Gbps |
| Use Case | Branch Office / Enterprise | Enterprise / Small Business | Enterprise / Small Business | Enterprise / Small Business | Business |
| VPN Support | IPSec / SSL VPN | IPSec / SSL VPN | IPSec / SSL VPN / N/A | IPSec / SSL VPN | IPSec / SSL VPN |
| WAN Configuration | WAN | WAN | Dual WAN | WAN | WAN |
| WAN Ports | 2 WAN | 1 WAN | 2 WAN | 2 WAN | 2 WAN |
| Weight | N/A | 8.6 lbs | N/A | 9.5 lbs | N/A |
| Wi-Fi Standard | 802.11n | N/A | N/A | N/A | N/A |
| Width | N/A | 17.2 inches | N/A | 17 inches | N/A |
| Wireless Support | Yes | No | No | No | No |
Reviews & Ratings
D
David Adams
4
Cisco 1861W-SRST-F delivers reliable performance with POE and WLAN support. Easy to configure for branch offices.
S
Sophia Walker
5
Handles voice, data, and POE devices efficiently. Solid all-in-one solution for small offices.
B
Benjamin Young
3
Consistent uptime and dependable SRST backup. Excellent choice for remote or branch office deployments.
J
James White
4
Trusted Cisco build and reliable performance. Voice and data continuity is seamless under load.