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Name:
C881SRSTW-GN-A-K9
- Description:
- Cisco SRST881 ENet FXS - FXO Sec Router 802.11n FCC Comp
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3 Year Extended Warranty
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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.
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.
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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.
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C881SRSTW-GN-A-K9 Overview
C881SRSTW-GN-A-K9 is a compact integrated services router engineered with a fixed architecture that delivers robust performance for small to mid‑sized branch offices. It supports dual power options with redundant AC supplies and features a balance of WAN and LAN interfaces, ensuring dependable connectivity while integrating diverse services including VPN, firewall, voice, and video.
Built to support a range of routing protocols such as OSPF, EIGRP, RIP, and static routing, this device incorporates VPN features and basic modular expansion capabilities for integrated services. With a throughput capacity of up to 150 Mbps, built‑in firewall security, and remote management via SSH, Telnet, and SNMP, it is ideally suited for business environments requiring secure, high‑availability connectivity and optimized performance.
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C881SRSTW-GN-A-K9 Specifications
| Product Type | Integrated Services Router |
| VPN Support | IPSec / SSL VPN / N/A |
| Power Source | AC Power Supply / Redundant |
| Routing Protocols | OSPF / EIGRP / RIP / Static Routing |
| Broadband | N/A |
| Architecture | Fixed |
| WAN Configuration | Dual WAN |
| WAN Ports | 2 WAN |
| LAN Ports | 4 LAN Ports |
| Ethernet Technology | 10/100 |
| Wi-Fi Standard | WiFi 4 |
| Connectivity Type | Wired / Wireless / Ethernet |
| Network Protocols | IPv4 / IPv6 |
| Remote Management | SSH / Telnet / SNMP |
| Compliance Standards | FCC / CE |
| Wireless Support | Yes |
| Speed/Capacity | Fast Ethernet |
| Firewall Features | Yes |
| Features | VPN / Firewall / IPv6 Compatible / NAT |
| Use Case | Business / Small Business / Enterprise |
| Management | Managed |
| Form Factor | Desktop |
| Integrated Services | Voice / Video / N/A |
| High Availability Support | Not Supported |
| Safety | N/A |
| EMC | N/A |
| Telecom | N/A |
| Throughput Capacity | 150 Mbps |
| QoS Features | Supported |
| Built-in Security Features | Firewall / Intrusion Prevention |
| Expansion Slots | N/A |
| Modular Slots Available | N/A |
| Stacking Capability | No |
| 5G Support | No |
| Memory | 256 MB |
| Flash Memory | 128 MB |
| Interface Ports | RJ-45 / Combo Ports |
| Power | 25 W |
| Device Type | Router |
| Product Name | Cisco 881SRSTW-GN-A-K9 Integrated Services Router |
| Height | N/A |
| Width | N/A |
| Depth | N/A |
| Weight | N/A |
C881SRSTW-GN-A-K9 Use Case
Branch Office Telephony Continuity with Cisco SRST881
In distributed enterprises, Cisco SRST881 switches to Survivable Remote Site Telephony (SRST) and PSTN fallback via built-in FXO/FXS when the WAN link to the central IP PBX fails. Outcome: continuous voice services with zero downtime, preserved customer support, and uninterrupted branch productivity.
Secure Retail POS and Guest Wi-Fi Segmentation
Retail stores use SRST881’s integrated firewall, VLAN routing and 802.11n wireless to isolate point-of-sale terminals from guest networks while enforcing PCI-compliant encryption. Outcome: protected payment transactions, enhanced in-store Wi-Fi experience, and simplified network security management.
Rapid Deployment for Pop-Up Offices and Events with 4G Backup
Event organizers and temporary sites deploy SRST881 for fast network setup using 802.11n wireless, 4G LTE failover and secure IPsec tunnels. The router’s FXO port also ensures PSTN voice continuity. Outcome: swift, reliable connectivity and voice services without fixed infrastructure dependencies.
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 | Modular | Fixed | Fixed |
| Broadband | N/A | N/A | DSL | N/A | N/A |
| Built-in Security Features | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention |
| Compliance Standards | FCC / CE | FCC / CE | FCC / CE | FCC, CE, RoHS | FCC / CE |
| Connectivity Type | Wired | Wired | Wired | Wired / Wireless | Wired / Wireless / Ethernet |
| Depth | N/A | N/A | N/A | N/A | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | FCC / CE | N/A | N/A | N/A | N/A |
| Ethernet Technology | 10/100 | 10/100 | 10/100 | 10/100 | 10/100 |
| Expansion Slots | N/A | N/A | NIM | N/A | N/A |
| Features | VPN / IPv6 Compatible / Firewall / Syslog | VPN / NAT / QoS / Firewall | VPN / VoIP / IPv6 Compatible / Firewall / NAT | VPN / VoIP / IPv6 Compatible / Firewall | VPN / Firewall / IPv6 Compatible / NAT |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 128 MB | 128 MB | 128 MB | 256 MB | 128 MB |
| Form Factor | Desktop | Desktop | Desktop | Desktop | Desktop |
| Height | N/A | N/A | N/A | N/A | N/A |
| High Availability Support | Supported | Supported | Not Supported | Not Supported | Not Supported |
| Integrated Services | Voice | Voice / Video / Security | Voice / Video / WAN Optimization | Voice | Voice / Video / N/A |
| Interface Ports | RJ-45 | RJ-45 | RJ-45 / Modular Interface | RJ-45 | RJ-45 / Combo Ports |
| LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 256 MB | 256 MB | 512 MB | 512 MB | 256 MB |
| Modular Slots Available | N/A | N/A | 1 Slot | N/A | N/A |
| Network Protocols | IPv4 / IPv6 | IPv4 / IPv6 | IPv4 / IPv6 | IPv4, IPv6, TCP/IP, UDP, ICMP | IPv4 / IPv6 |
| Power | 35 W | 65 Watts | 65 Watt | 50 Watt | 25 W |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply, Redundant | AC Power Supply | AC Power Supply / Redundant |
| Product Name | CISCO886-SEC-K9 | CISCO887-K9 | CISCO877-M-K9 | CISCO857W-G-E-K9 | Cisco 881SRSTW-GN-A-K9 Integrated Services Router |
| Product Type | Branch Router | Enterprise Router | Integrated Services Router | Integrated Services Router | Integrated Services Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | Telnet / SSH / SNMP | CLI / SSH / Telnet / SNMP | Telnet / SSH | HTTP, HTTPS, SNMP, SSH | SSH / Telnet / SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / Static Routing | RIP / OSPF / EIGRP / BGP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / Static Routing |
| Safety | UL / CE | N/A | N/A | UL, CE | N/A |
| Speed/Capacity | Gigabit | 100 Mbps | Fast Ethernet | N/A | Fast Ethernet |
| Stacking Capability | No | No | No | No | No |
| Telecom | FCC / CE | N/A | N/A | N/A | N/A |
| Throughput Capacity | 0.3 Gbps | 20 Mbps | 30 Mbps | 60 Mbps | 150 Mbps |
| Use Case | Enterprise | Enterprise Branch | Small Business / Branch Office | Small Business | Business / Small Business / Enterprise |
| VPN Support | IPSec VPN / SSL VPN | IPSec / SSL VPN / DMVPN / N/A | IPSec | IPSec / SSL VPN | IPSec / SSL VPN / N/A |
| WAN Configuration | Dual WAN | WAN | Single WAN with Optional Modular Expansion | WAN | Dual WAN |
| WAN Ports | 2 WAN | 1 WAN | 1 WAN Port | 1 WAN | 2 WAN |
| Weight | N/A | N/A | N/A | N/A | N/A |
| Wi-Fi Standard | N/A | N/A | N/A | WiFi 4 | WiFi 4 |
| Width | N/A | N/A | N/A | N/A | N/A |
| Wireless Support | No | No | No | Yes | Yes |
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Questions & Answers
Q
What is the Cisco SRST881 ENet FXS/FXO Sec Router (SKU: C881SRSTW-GN-A-K9)?
A
The Cisco SRST881 (SKU C881SRSTW-GN-A-K9) is an integrated branch router with embedded SRST for high-availability VoIP, 802.11n wireless, security features and FCC compliance.
Q
What are the key features of the Cisco SRST881 router?
A
Key features include Survivable Remote Site Telephony (SRST), dual FXS/FXO voice ports, 802.11n wireless, integrated security (VPN, firewall, IPSec) and FCC compliance.
Q
How many concurrent VoIP calls can the SRST881 support in SRST mode?
A
The SRST881 supports up to 12 concurrent G.711 VoIP calls in Survivable Remote Site Telephony (SRST) mode.
Q
Does the SRST881 support 802.11n wireless connectivity?
A
Yes, the SRST881 includes an integrated 2.4 GHz 802.11n radio delivering data rates up to 144 Mbps for wireless LAN access.
Q
What security features are built into the Cisco SRST881?
A
Built-in security includes a stateful firewall, IPsec VPN, secure management (SSH, SSL), intrusion prevention and URL filtering.
Q
Is the Cisco SRST881 router FCC compliant?
A
Yes, the Cisco SRST881 (C881SRSTW-GN-A-K9) meets FCC Part 15 Class B requirements for emission and interference control.
Q
How do I configure the SRST881 for a remote office failover?
A
Use the Cisco IOS SRST software image, provision dial-peers for local call routing, configure TFTP to sync dial plan and verify voice port status.
Q
What WAN connectivity options are available on the SRST881?
A
The SRST881 offers one 10/100 Mbps Ethernet WAN port and supports DSL or cable modem via Ethernet uplink.
Q
How many FXS and FXO ports are included on the SRST881?
A
The SRST881 provides two FXS ports for IP phones and one FXO port for PSTN failover.
Q
Can the SRST881 integrate with Cisco Unified Communications Manager?
A
Yes, the SRST881 seamlessly integrates with Cisco Unified Communications Manager for centralized call processing and SRST fallback.
Q
How does the SRST881 ensure business continuity during WAN outages?
A
During WAN outages, SRST activates on the router, enabling local call processing and PSTN fallback via FXS/FXO ports.
Q
What are the power requirements and physical dimensions of the SRST881?
A
The SRST881 operates on 12 VDC at 1.5 A, weighs 1.1 lb and measures 7.5” × 7.0” × 1.5”.
Q
How do I upgrade the firmware on the Cisco SRST881?
A
Upload the new IOS image via TFTP or USB and update the boot variable in ROMMON, then reload the router.
Q
What management interfaces does the SRST881 support?
A
Management options include Cisco IOS CLI, Cisco Configuration Professional GUI, SNMPv2/v3 and embedded HTTP/HTTPS.
Q
What warranty and support options are available for the SRST881?
A
Cisco offers a one-year limited hardware warranty, with optional SMARTnet support contracts for extended coverage and 24×7 technical assistance.
Q
Does the SRST881 support VPN tunnels for secure site-to-site connectivity?
A
Yes, the SRST881 supports up to five IPsec site-to-site VPN tunnels with AES and 3DES encryption.
Q
Where can I purchase the Cisco SRST881 (SKU: C881SRSTW-GN-A-K9)?
A
The SRST881 is available through Cisco authorized partners, resellers and Cisco’s online storefront.
