Name: 1861,WLAN,8-usrSRST/CME,CUE,4FXS,4FXO,8xPOE,SP Svcs,HWICslot
Brand: Cisco
SKU: C1861W-SRST-C-F/K9
Availability: OutOfStock

Question 1

What is the Cisco 1861W Integrated Services Router (SKU C1861W-SRST-C-F/K9)?

Accepted Answer

The Cisco 1861W is a branch-office router featuring integrated WLAN, 8-user SRST/CME, Cisco Unity Express, 4 FXS/4 FXO voice ports, 8-port 10/100 PoE, SP Services performance, and one HWIC slot.

Question 2

Which LAN and WAN interfaces does the C1861W provide?

Accepted Answer

The router includes eight 10/100 PoE LAN ports, two 10/100/1000 WAN ports, and one HWIC slot for WAN or LAN expansion.

Question 3

Does the Cisco 1861W support Power over Ethernet (PoE)?

Accepted Answer

Yes, it offers eight integrated 10/100 PoE ports delivering up to 15.4 W per port for IP phones, cameras, and access points.

Question 4

How many voice FXS and FXO ports are available on the 1861W?

Accepted Answer

It includes four FXS ports for analog phones and four FXO ports for PSTN connectivity, enabling on-premises telephony fallback.

Question 5

Can I deploy wireless LAN with this router?

Accepted Answer

Yes, the 1861W has an onboard WLAN controller supporting up to 24 access points for centralized Wi-Fi management.

Question 6

What voice survivability does the SRST feature provide?

Accepted Answer

SRST (Survivable Remote Site Telephony) ensures up to eight concurrent calls and local call processing if the WAN link fails.

Question 7

Is Cisco Unified Communications Manager Express (CME) supported?

Accepted Answer

Yes, the integrated CME delivers IP telephony features for up to eight users without additional servers.

Question 8

What is Cisco Unity Express (CUE) on this platform?

Accepted Answer

CUE provides embedded voicemail, auto-attendant, and unified messaging for small sites, with support for up to eight mailboxes.

Question 9

What performance does the SP Services license enable?

Accepted Answer

The Service Provider Services performance license unlocks up to 90 Mbps throughput and 75,000 packets per second forwarding.

Question 10

Can I expand the 1861W’s port or module capacity?

Accepted Answer

Yes, one HWIC slot supports additional WAN, voice, security, or specialized modules for future growth.

Question 11

Which security features are built into the C1861W?

Accepted Answer

It includes stateful firewall, intrusion prevention, VPN (IPsec/SSL), content filtering, and advanced encryption to secure branch traffic.

Question 12

How do I manage and configure the Cisco 1861W router?

Accepted Answer

Use Cisco IOS CLI or Cisco Configuration Professional (CCP) for web-based setup, monitoring, and policy management.

Question 13

Is the 1861W compatible with Cisco Unified Communications Manager (CUCM)?

Accepted Answer

Yes, it integrates with CUCM for centralized call control while providing local SRST fallback at the branch.

Question 14

What are the power and environmental requirements?

Accepted Answer

The router accepts 100–240 VAC at 50/60 Hz, consumes up to 180 W, and operates between 0 °C to 40 °C ambient temperature.

Question 15

What warranty and support options are available?

Accepted Answer

Cisco offers a limited lifetime hardware warranty and optional SMARTnet support for rapid hardware replacement and 24/7 technical assistance.

Question 16

What is the maximum VPN capacity on this router?

Accepted Answer

It supports up to 100 IPsec VPN tunnels for secure site-to-site and remote access connectivity.

Question 17

How does the CUE licensing model work on the 1861W?

Accepted Answer

Cisco Unity Express is included with unlimited licenses for voicemail ports and messaging services for up to eight users.

	C1861W-SRST-C-F/K9	C1861W-UC-2BRI-K9	CISCO1802	C1841-3G-V	CISCO1801W-AG-B/K9
5G Support	No	No	No	No	No
Architecture	Fixed	Fixed	Fixed	Fixed	Fixed
Broadband	N/A	N/A	DSL	3G	N/A
Built-in Security Features	Firewall / Intrusion Prevention / Malware Protection	Firewall / Intrusion Prevention / Malware Protection	Firewall, Intrusion Prevention	Firewall / Intrusion Prevention	Firewall / Intrusion Prevention / Malware Protection
Compliance Standards	FCC / CE / UL	FCC / CE	IEEE 802.3, 802.3u, 802.3ab	FCC / CE	FCC, CE, RoHS
Connectivity Type	Wired	Wired / Wireless	Wired	Wired	Wired / Wireless / Ethernet
Depth	N/A	N/A	13 inches	N/A	N/A
Device Type	Router	Router	Router	Router	Router
EMC	N/A	N/A	FCC, CE	N/A	N/A
Ethernet Technology	10/100	10/100	10/100/1000	10/100	10/100
Expansion Slots	EHWIC	N/A	NIM, EHWIC	EHWIC	EHWIC
Features	VPN / VoIP / IPv6 Compatible / Firewall	VPN / VoIP / Firewall / IPv6 Compatible	VPN, VoIP, IPv6 Compatible, Firewall, MPLS	Modular / VPN / Voice / Firewall	VPN / Firewall / Voice / IPv6 Compatible
Firewall Features	Yes	Yes	Yes	Yes	Yes
Flash Memory	128 MB	128 MB	256 MB	128 MB	128 MB
Form Factor	Desktop	Desktop	Rack-mount	Rack-mount	Rack-mount
Height	N/A	N/A	1.75 inches	N/A	N/A
High Availability Support	Not Supported	Not Supported	Supported	Not Supported	Supported
Integrated Services	Voice	Voice	Voice, Video, WAN Optimization	Voice / Data	Voice / Video
Interface Ports	RJ-45	RJ-45	RJ-45, Combo Ports	RJ-45	RJ-45
LAN Ports	4 LAN Ports	4 LAN Ports	4 LAN Ports	2 x10/100 LAN Ports	4 LAN Ports
Management	Managed	Managed	Managed	Managed	Managed
Memory	512 MB	256 MB	512 MB	256 MB	256 MB
Modular Slots Available	1 Slot	N/A	2 Slots	1 Slot	2 Slots
Network Protocols	IPv4, IPv6, MPLS	TCP/IP, UDP, ICMP, IGMP	IP, TCP, UDP, HTTP, SNMP	IPv4 / IPv6	IPv4, IPv6
Power	65W	65 Watts	150W	N/A	65 Watt
Power Source	AC Power Supply	AC Power Supply	AC Power Supply with Redundant Option	AC Power Supply	AC Power Supply
Product Name	Cisco 1861W Integrated Services Router with SRST	Cisco 1861W Integrated Services Router for Unified Communications	Cisco 1802 Integrated Services Router	Cisco C1841-3G-V Integrated Services Router	CISCO1801W-AG-B/K9
Product Type	Enterprise Router	Enterprise Router	Enterprise Router	Enterprise Router	Enterprise Router
QoS Features	Supported	Supported	Supported	Supported	Supported
Remote Management	CLI, SNMP, HTTP/HTTPS	CLI, SNMP, HTTP/HTTPS	Telnet, SSH, SNMP, HTTPS	Telnet / SSH	Telnet, SSH, SNMP
Routing Protocols	OSPF / EIGRP / BGP / RIP / Static Routing	OSPF / BGP / EIGRP / RIP / Static Routing	OSPF / BGP / EIGRP / Static Routing	OSPF / EIGRP / RIP / BGP	OSPF / BGP / EIGRP / RIP / Static Routing
Safety	N/A	N/A	UL, CE	N/A	N/A
Speed/Capacity	Gigabit	N/A	Gigabit	25 Mbps	N/A
Stacking Capability	No	No	Yes	No	No
Telecom	N/A	N/A	ETSI	N/A	N/A
Throughput Capacity	N/A	0.025 Gbps	1 Gbps	25 Mbps	0.1 Gbps
Use Case	Small Business	Business	Enterprise / Business	Enterprise / Small Business	Business / Small Business
VPN Support	IPSec / SSL VPN / DMVPN / N/A	IPSec	IPSec / SSL VPN	IPSec / SSL VPN	IPSec / SSL VPN
WAN Configuration	Dual WAN	WAN	Dual WAN	WAN	WAN
WAN Ports	2 WAN	1 WAN	2 WAN	Modular WAN	1 WAN
Weight	N/A	N/A	15 lbs	N/A	N/A
Wi-Fi Standard	WiFi 4	WiFi 3	N/A	N/A	WiFi 4
Width	N/A	N/A	17 inches	N/A	N/A
Wireless Support	Yes	Yes	No	Yes	Yes

C1861W-SRST-C-F/K9

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Questions & Answers

What is the Cisco 1861W Integrated Services Router (SKU C1861W-SRST-C-F/K9)?

Which LAN and WAN interfaces does the C1861W provide?

Does the Cisco 1861W support Power over Ethernet (PoE)?

How many voice FXS and FXO ports are available on the 1861W?

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