United States
Name:
C1861-SRST-C-B/K9
- Description:
- 1861,8-user SRST or CME,CUE,4FXS,2BRI,8POE,SP Svcs,HWIC slot
- Rating:
-
(0)
Added to cart 8 times recently
- Availability:
-
In stock - Ready to Ship
- Brand:
- Cisco
- Condition:
- GTIN:
- 882658184963
- Warranty:
-
3 - List Price:
-
- Price:
-
3 Year Extended Warranty
Same-day Shipping
14-Day Money Back Guarantee
Need Additional Discount on Product?
Request a quote below - Get Exclusive Pricing and Support.
Exclusive Bulk Discounts tailored to your order size
Priority Processing with a dedicated account manager
Fast Response: Get your custom quote within 5-10 minutes during business hours (Mon-Fri, 6:00 AM – 6:00 PM PST)
Holiday Bonus: Submissions on holidays receive priority handling the next business day
Shipping:
Payment:
Shipping as per your need
Same-day Shipping
Express Delivery Across the USA
Need it fast? Choose Express Shipping and receive your order within 1–3 business days.
Free Ground Shipping Available
Standard ground delivery across the U.S. takes 2–6 days, depending on your location — no extra charge.
International Shipments Made Simple
For all international orders, we ship via your UPS, FedEx, or DHL account — or to your U.S.-based freight forwarder.
Delivery Timelines
Under 100 KG? Ships Express.
Smaller shipments go via DHL or FedEx Express — delivered worldwide in approximately 3 business days.
Over 100 KG? Ships via Freight.
Larger orders are dispatched through freight forwarding partners. Delivery takes 7–10 business days, globally.
Always Delivered to Your Door
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.
Service Boundaries & Exclusions
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.
Know your location’s service type.
In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.
Minimal documentation required.
To initiate service, just submit the invoice and warranty card — no red tape, no waiting.
14-Day Money Back Guarantee
Free 14-Day Returns
Tested it, but it’s not a fit?
Return any product within 14 days of delivery if it doesn’t meet your technical or operational needs.
Initiate returns with ease.
Our RMA process is streamlined — just raise a request, follow the packaging guidelines, and we’ll handle the rest.
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.
TRUSTED, TRIED, PROVEN
C1861-SRST-C-B/K9 Overview
C1861-SRST-C-B/K9 is a high-performance enterprise router built with a fixed architecture that provides reliable connectivity with flexible power options, including a redundant AC power supply to ensure continuous operation. It features dedicated 10/100 WAN and LAN interfaces along with integrated services such as voice and video to support unified communications in branch offices and remote sites.
Designed with modular capabilities, this router offers expansion slots for additional network interface modules and advanced VPN features that secure remote connectivity. With throughput reaching up to 0.02 Gbps, built-in redundancy for high availability, and optimized performance for business-critical use cases, C1861-SRST-C-B/K9 is ideally suited for enterprise and small business deployments.
What is the price of C1861-SRST-C-B/K9?
Pricing for C1861-SRST-C-B/K9 is available on request. Get immediate quote or for exclusive discounts, opt for bulk quotation for C1861-SRST-C-B/K9.
Explore more options from Routers or explore other Cisco products.
C1861-SRST-C-B/K9 Specifications
| Product Type | Enterprise Router |
| VPN Support | IPSec VPN / N/A |
| Power Source | AC Power Supply / Redundant |
| Routing Protocols | OSPF / EIGRP / RIP / Static Routing |
| Broadband | N/A |
| Architecture | Fixed |
| WAN Configuration | WAN |
| WAN Ports | 1 WAN |
| LAN Ports | 4 LAN Ports |
| Ethernet Technology | 10/100 |
| Wi-Fi Standard | N/A |
| Connectivity Type | Wired |
| Network Protocols | IPv4, IPv6 |
| Remote Management | HTTP, HTTPS, SSH, Telnet |
| Compliance Standards | FCC, CE |
| Wireless Support | No |
| Speed/Capacity | N/A |
| Firewall Features | Yes |
| Features | VPN, Voice, Video, IPv6 Compatible, Firewall |
| Use Case | Enterprise, Small Business |
| Management | Managed |
| Form Factor | Desktop |
| Integrated Services | Voice, Video |
| High Availability Support | Supported |
| Safety | N/A |
| EMC | N/A |
| Telecom | N/A |
| Throughput Capacity | 0.02 Gbps |
| QoS Features | Supported |
| Built-in Security Features | Firewall, Intrusion Prevention |
| Expansion Slots | EHWIC |
| Modular Slots Available | 1 Slot |
| Stacking Capability | No |
| 5G Support | No |
| Memory | 256 MB |
| Flash Memory | 256 MB |
| Interface Ports | RJ-45 |
| Power | 65 W |
| Device Type | Router |
| Product Name | C1861-SRST-C-B/K9 |
| Height | N/A |
| Width | N/A |
| Depth | N/A |
| Weight | N/A |
C1861-SRST-C-B/K9 Use Case
High-Availability Branch Office Telephony with SRST and PoE
In distributed branch environments, the Cisco C1861-SRST-C-B/K9 router delivers 8-user SRST and 8 PoE ports to sustain IP phone operations during WAN outages. By enabling local call processing and power over Ethernet for critical handsets, organizations maintain uninterrupted voice services, reinforce disaster resilience, and uphold corporate SLAs.
All-in-One SMB Unified Communications with CME, CUE, FXS and BRI
A growing SMB consolidates telephony by deploying the Cisco 1861 platform with CME, CUE, 4 FXS ports for analog fax/phones, and 2 BRI interfaces for ISDN backup. The integrated solution streamlines voice, voicemail, and fax services into a single appliance, reducing CAPEX, lowering operational complexity, and accelerating time-to-service.
Service Provider Edge Aggregation with SP Services and HWIC Expansion
Service providers leverage the C1861-SRST-C-B/K9 with SP Services license and an HWIC slot to aggregate multi-protocol voice/data across multi-dwelling units. With 8 PoE ports for customer IP handsets, 4 FXS for analog fallback, and 2 BRI for redundancy, providers deliver rapid service provisioning, scalable growth, and optimized bandwidth utilization for improved ROI.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
|
|
|
|
|
|
|
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Fixed | Fixed | Fixed | Fixed | Fixed |
| Broadband | N/A | DSL | N/A | DSL | N/A |
| Built-in Security Features | Firewall, Intrusion Prevention | Firewall, Intrusion Prevention | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention / Malware Protection |
| Compliance Standards | FCC, CE | IEEE 802.3, 802.3u, 802.3ab | FCC / CE / UL | FCC / CE | FCC / CE |
| Connectivity Type | Wired | Wired | Wired | Wired / Ethernet | Wired |
| Depth | N/A | 13 inches | N/A | 16.0 inches | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | FCC, CE | N/A | FCC Part 15 | N/A |
| Ethernet Technology | 10/100 | 10/100/1000 | 10/100 | 10/100 | 10/100 |
| Expansion Slots | EHWIC | NIM, EHWIC | EHWIC | EHWIC / NIM | EHWIC |
| Features | VPN, Voice, Video, IPv6 Compatible, Firewall | VPN, VoIP, IPv6 Compatible, Firewall, MPLS | VPN / VoIP / IPv6 Compatible / Firewall | VPN / IPv6 Compatible / Firewall | VPN / IPv6 Compatible / Firewall / Voice |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 256 MB | 256 MB | 256 MB | 128 MB |
| Form Factor | Desktop | Rack-mount | Desktop | Rack-mount | Rack-mount |
| Height | N/A | 1.75 inches | N/A | 1.7 inches | 1.75 inches |
| High Availability Support | Supported | Supported | Not Supported | Not Supported | Not Supported |
| Integrated Services | Voice, Video | Voice, Video, WAN Optimization | Voice / Video / WAN Optimization | Voice / Video | Voice / Video |
| Interface Ports | RJ-45 | RJ-45, Combo Ports | RJ-45 | RJ-45 | RJ-45 |
| LAN Ports | 4 LAN Ports | 4 LAN Ports | N/A | N/A | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 256 MB | 512 MB | 128 MB | 128 MB | 256 MB |
| Modular Slots Available | 1 Slot | 2 Slots | 2 Slots | 2 Slots | 2 Slots |
| Network Protocols | IPv4, IPv6 | IP, TCP, UDP, HTTP, SNMP | IPv4 / IPv6 | IPv4 / IPv6 | TCP/IP / IPX |
| Power | 65 W | 150W | 65W | 60 W | 65 Watts |
| Power Source | AC Power Supply / Redundant | AC Power Supply with Redundant Option | AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | C1861-SRST-C-B/K9 | Cisco 1802 Integrated Services Router | Cisco C1841-3G-S Integrated Services Router | Cisco 1841 ADSL2-B Router | Cisco 1803/K9 Integrated Services Router |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | HTTP, HTTPS, SSH, Telnet | Telnet, SSH, SNMP, HTTPS | Telnet / SSH / SNMP | Telnet / SSH / SNMP | CLI / SNMP |
| Routing Protocols | OSPF / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing |
| Safety | N/A | UL, CE | N/A | UL Listed | N/A |
| Speed/Capacity | N/A | Gigabit | N/A | N/A | Fast Ethernet |
| Stacking Capability | No | Yes | No | No | No |
| Telecom | N/A | ETSI | N/A | N/A | N/A |
| Throughput Capacity | 0.02 Gbps | 1 Gbps | 0.025 Gbps | 0.025 Gbps | 25 Mbps |
| Use Case | Enterprise, Small Business | Enterprise / Business | Enterprise | Business | Small Business / Enterprise |
| VPN Support | IPSec VPN / N/A | IPSec / SSL VPN | IPSec | IPSec / SSL VPN | IPSec / GRE / DMVPN |
| WAN Configuration | WAN | Dual WAN | WAN | WAN | Dual WAN |
| WAN Ports | 1 WAN | 2 WAN | 1 WAN | 1 WAN | 2 WAN |
| Weight | N/A | 15 lbs | N/A | 13 lbs | 6.6 lbs |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | N/A | 17 inches | N/A | 19.0 inches | 17 inches |
| Wireless Support | No | No | No | No | No |
Showing - of 0 Results
Questions & Answers
Q
What is the Cisco 1861-SRST-C-B/K9 router?
A
The Cisco 1861-SRST-C-B/K9 is a high-performance Integrated Services Router delivering 8-user SRST or CME failover, CUE voice mail, 4 FXS, 2 BRI, 8 PoE ports, service provider services, and an HWIC slot for expansion.
Q
How many Power over Ethernet (PoE) ports does the 1861-SRST-C-B/K9 offer?
A
It provides eight IEEE 802.3af-compliant PoE ports with a total power budget of up to 110W to support IP phones, cameras, and wireless access points.
Q
Does the Cisco 1861-SRST-C-B/K9 support Survivable Remote Site Telephony (SRST)?
A
Yes, it supports up to eight concurrent SRST sessions for automatic Cisco Unified Communications Manager failover at remote sites.
Q
What voice interfaces are integrated in the 1861-SRST-C-B/K9?
A
It includes four FXS ports for analog phones and two BRI interfaces for ISDN connectivity, enabling flexible voice deployments.
Q
Can I expand the Cisco 1861-SRST-C-B/K9 with additional modules?
A
Yes, the router features one HWIC slot that supports a wide range of interface cards, including additional Ethernet, serial, and voice modules.
Q
What routing throughput does the 1861-SRST-C-B/K9 deliver?
A
It provides up to 25 Mbps of IP forwarding performance, ensuring reliable data, voice, and video transport for branch applications.
Q
What are the memory and storage specifications of the 1861-SRST-C-B/K9?
A
The router ships with 256 MB of DRAM and a 64 MB CompactFlash card for Cisco IOS images and configuration files.
Q
How is the Cisco 1861-SRST-C-B/K9 managed?
A
You can manage it via Cisco IOS CLI, web-based Device Manager, or network management tools such as Cisco Works for centralized administration.
Q
What power supply options does the 1861-SRST-C-B/K9 use?
A
It includes an integrated internal AC power supply (100–240V) with optional DC power module support for carrier environments.
Q
What are the physical dimensions and weight of the Cisco 1861-SRST-C-B/K9?
A
The chassis measures 1.75 x 17.5 x 15 inches (4.45 x 44.45 x 38.1 cm) and weighs approximately 13.2 lbs (6 kg).
Q
Which Cisco IOS software license is required for advanced features?
A
To enable full security, VPN, and voice features you need the Cisco IOS Security license plus the Cisco Unified Communications license for CME or CUE.
Q
Can the 1861-SRST-C-B/K9 integrate with Cisco Unity Express (CUE)?
A
Yes, the router supports the Cisco Unity Express application module for on-premises voicemail and automated attendant services.
Q
How do I configure SRST on the Cisco 1861-SRST-C-B/K9?
A
Enable SRST with the 'telephony-service' and 'srst' commands in Cisco IOS, define port assignments, and register IP phones to local SRST.
Q
What service provider interfaces are supported by this router?
A
It supports up to two BRI S/T interfaces and multiple WAN options via the HWIC slot, including T1/E1 and serial connections.
Q
What warranty and support options are available for the 1861-SRST-C-B/K9?
A
Cisco offers a one-year limited hardware warranty with optional SMARTnet service for 24/7 access to software updates and technical support.
