United States
Name:
C1861W-SRST-F/K9
- Description:
- 1861,WLAN,8-user SRST/CME,4FXS,4FXO,8xPOE,SP Svcs,HWIC slot
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- Brand:
- Cisco
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- GTIN:
- 882658208157
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Larger orders are dispatched through freight forwarding partners. Delivery takes 7–10 business days, globally.
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Every shipment is delivered directly to your address — regardless of country or carrier.
Our best-in-class warranties
3-Year Extended Warranty
Extended protection, enterprise-grade.
All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
Professional repairs & replacements.
If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
RMA process, simplified.
Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
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What’s covered — and what’s best avoided.
Your warranty covers defects under normal use. For continued protection, avoid accidental damage, unauthorized repairs, third-party parts, or extreme environments.
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In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.
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Return any product within 14 days of delivery if it doesn’t meet your technical or operational needs.
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Refund or restock, your call.
Changed your mind? Get a refund (restocking fees may apply) or swap with another product.
30-Day Hardware Replacement
Covered for any early faults.
All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.
Replacements shipped in 10 days or less.
Once your return is inspected and approved, we dispatch the replacement promptly to keep your operations moving.
RMA protocol keeps it smooth.
Just ensure all accessories and original packaging are intact — we’ll take care of the technical validation.
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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.
What is the price of C1861W-SRST-F/K9?
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Explore more options from Routers or explore other Cisco products.
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
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|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Fixed | Fixed | Fixed | Fixed | Fixed |
| Broadband | DSL | N/A | N/A | N/A | N/A |
| Built-in Security Features | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention / Malware Protection | Firewall, Intrusion Prevention, Malware Protection | 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 | Wired / Wireless | Wired | Wired | Wired |
| Depth | N/A | N/A | 14.6 inches | 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 | NIM | EHWIC / WIC | EHWIC | EHWIC | EHWIC |
| Features | Voice / VPN / IPv6 Compatible / Firewall | VPN / Firewall / Integrated Wireless / QoS | VPN, Firewall, Intrusion Prevention, NAT, QoS, Routing | VPN / Voice / NAT / Firewall | VPN / VoIP / Firewall / IPv6 Compatible |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 128 MB | 256 MB | 256 MB | 256 MB | 128 MB |
| Form Factor | Rack-mount / Desktop | Desktop | Desktop / Rack-mount | Desktop | Rack-mount |
| Height | N/A | N/A | 1.73 inches | 1.72 inches | N/A |
| High Availability Support | Not Supported | Not Supported | Not Supported | Not Supported | Supported |
| Integrated Services | Voice / N/A | Voice / Video / Data | Voice, VPN, Security | Voice | Voice |
| Interface Ports | RJ-45 | RJ-45 / Combo Ports | RJ-45 | RJ-45 | RJ-45 |
| LAN Ports | 2 LAN Ports | 4 LAN Ports | 2 LAN Ports | Modular LAN | N/A |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 256 MB | 256 MB | 128 MB | 512 MB | 256 MB |
| Modular Slots Available | 2 Slots | 1 Slot | 2 Slots | 2 Slots | 1 Slot |
| Network Protocols | IPv4 / IPv6 / ICMP / TCP / UDP | TCP/IP | IPv4, IPv6, TCP/IP | IPv4 / IPv6 / MPLS / VPN | IP |
| Power | 95 W | 65W | 65 Watts | 45 Watt | 60 Watt |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | CISCO1841-2SHDSL | Cisco 1861 Integrated Services Router Wireless | Cisco 1841 Integrated Services Router C1841-3G-V-SEC/K9 | 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 | Telnet / SSH / SNMP | CLI / HTTP / SNMP | Telnet, SSH, SNMP, HTTP/HTTPS | Telnet / SSH / SNMP | Telnet, SSH, SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / BGP / 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 | N/A | Fast Ethernet | Fast Ethernet | 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 | 25 Mbps | 33 Mbps | 0.035 Gbps | 0.025 Gbps |
| Use Case | Enterprise / Small Business | Branch Office / Enterprise | Enterprise / Small Business | Enterprise / Small Business | Business |
| VPN Support | IPSec / SSL VPN / N/A | IPSec / SSL VPN | IPSec / SSL VPN | IPSec / SSL VPN | IPSec / SSL VPN |
| WAN Configuration | Dual WAN | WAN | WAN | WAN | WAN |
| WAN Ports | 2 WAN | 2 WAN | 1 WAN | 2 WAN | 2 WAN |
| Weight | N/A | N/A | 8.6 lbs | 9.5 lbs | N/A |
| Wi-Fi Standard | N/A | 802.11n | N/A | N/A | N/A |
| Width | N/A | N/A | 17.2 inches | 17 inches | N/A |
| Wireless Support | No | Yes | No | No | No |
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