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C1861W-SRST-F/K9
1861,WLAN,8-user SRST/CME,4FXS,4FXO,8xPOE,SP Svcs,HWIC slot
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Enterprise Clients
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Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
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.
Request bulk order quote for C1861W-SRST-F/K9 for additional pricing. Browse the full Router Isr 1800 series or explore all Cisco products.
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.
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.
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.
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| 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 |
| 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 |
| Device Type | Router | Router | Router | Router | Router |
| 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 |
| 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 |
| 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 |
| Stacking Capability | No | No | No | No | No |
| 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 |
| Wireless Support | Yes | No | No | No | No |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Powerful SRST router with stable voice and data. Ensures business continuity during WAN interruptions.
Cisco 1861W-SRST-F delivers reliable performance with POE and WLAN support. Easy to configure for branch offices.
Handles voice, data, and POE devices efficiently. Solid all-in-one solution for small offices.
Consistent uptime and dependable SRST backup. Excellent choice for remote or branch office deployments.
Trusted Cisco build and reliable performance. Voice and data continuity is seamless under load.
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