Data Sheet
Cisco 1760 Modular Access Router
Figure 1
Cisco 1760 Modular Access Router

Introduction
The Cisco 1760 Modular Access Router offers small and medium-sized businesses and enterprise small branch offices a 19-inch rack-mount access solution designed to enable them to grow their e-business capabilities. The two different versions of the Cisco 1760 Modular Access Router, the base version Cisco 1760 router and the preconfigured multiservice-ready Cisco 1760-V router, address the needs of customers who want to deploy e-business applications—now or in the future.
The Cisco 1760 router, as a modular platform in a 19-inch rack-mount form factor, offers customers secure Internet and intranet access, as well as the capability to implement a variety of e-business and voice applications. This includes voice over IP (VoIP), virtual private network (VPN) access, and business-class digital subscriber line (DSL) as required (refer to Figure 1).
The Cisco 1760 router is part of a broad portfolio of access routers optimized to deliver intelligent services such as quality of service (QoS), manageability, availability, and security.
The two different versions of the Cisco 1760 Modular Access Router, the base version Cisco 1760 router and the Cisco 1760-V router, address the needs of customers who want to deploy transformation technologies such as converged voice and data, IP telephony, or videoconferencing.
Key Benefits and Features
The key benefits and features of the Cisco 1760 Modular Access Router are listed in Table 1.
Table 1 Key Benefits and Features of Cisco 1760 Modular Access Router
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1 WAN interface cards and voice interface cards 2 Internetwork Packet Exchange 3 Systems Network Architecture 4 Data/channel service unit 5 Network Termination 1 6 Digital Encryption Standard 7 Triple DES 8 Key telephone system 9 Private branch exchange 10 Asymmetric DSL |
Cisco 1700 Series Routers
The Cisco 1700 Series routers enables a cost-effective, seamless network infrastructure for the small and medium-sized business and small enterprise branch office.
The Cisco 1700 Series of access routers includes the Cisco 1710, 1721, 1751 (includes a base model, the Cisco 1751, and a multiservice-ready model, the Cisco 1751-V), and Cisco 1760 (includes the base version, Cisco 1760, and the multiservice-ready version, Cisco 1760-V). Table 2 compares the Cisco 1760 and Cisco 1760-V routers.
The Cisco 1710 Security Access Router features comprehensive security with VPNs, a Cisco IOS Firewall, and advanced routing functionality in an all-in-one device.
The Cisco 1721 router is a modular device optimized for data-only connections. The Cisco 1751 and Cisco 1760 modular access routers are optimized for multiservice data and voice solutions.
The Cisco 1760 router is the preferred multiservice data and voice solution when a 19-inch rack-mount form factor is required. Compared to the Cisco 1751 router, it offers an additional VIC slot.
Table 2 Cisco 1760 Modular Access Router—Two Versions
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1 Single in-line memory module 2 Double in-line memory module 3 Digital signal processor |
High-Performance Architecture
Cisco IOS Software features and a robust RISC architecture enables the Cisco 1760 router to support applications as shown in Figures 2 and 3.
Figure 2
The Cisco 1760 router enables a multiservice solution

Figure 3
The Cisco 1760 router provides secure connectivity

Comprehensive Feature Set and Benefits
The Cisco 1760 router offers a broad feature set designed to allow businesses not only to attain maximum benefit on their investment but also to easily deploy e-business and voice solutions.
The following tables and figures provide details on the Cisco 1760 router features. Table 3 gives a comprehensive list of features and benefits, and Table 4 gives information on the physical architecture of the Cisco 1760 router. Physical interfaces, including WAN support, voice interface cards, and memory are delineated in Tables 5 through 7. The modular slots and router appearance are detailed in Figure 4.
Table 3 Benefits and Features of Cisco 1760 Modular Access Router
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1 Open Shortest Path First 2 Enhanced Interior Gateway Routing Protocol 3 Hot Standby Router Protocol 4 Voice over Frame Relay 5 Survivable Remote Site Telephony 6 Session Initiation Protocol 7 Media Gateway Control Protocol 8 Coder/decoder 9 Customer premises equipment 10 Intrusion detection system 11 IP Security 12 Internet Key Exchange 13 Certificate Enrollment Protocol 14 Password Authentication Protocol/Challenge Handshake Authentication Protocol 15 Remote Access Dial-In User Service 16 Layer 2 Tunneling Protocol 17 Generic routing encapsulation 18 Layer 2 Forwarding 19 Link fragmentation and interleaving 20 Multilink PPP 21 Low-latency queuing 22 Weighted Random Early Detection 23 Committed Access Rate 24 Weighted Fair Queuing 25 Generic traffic shaping 26 Resource Reservation Protocol 27 Differentiated services code point 28 Frame Relay Fragmentation 29 Frame Relay traffic shaping 30 Compressed Real-Time Transport Protocol 31 Point-to-Point Protocol 32 Serial Line Internet Protocol 33 PPP over Ethernet 34 ISDN leased line 35 Dynamic Host Configuration Protocol 36 Network Address Translation/Port Address Translation 37 Network-based application recognition 38 Simple Network Management Protocol |
Figure 4 shows the four modular slots on the front panel view of the Cisco 1760 Modular Access Router. Two slots are for VICs and two slots are either for VICs or for WICs.
Figure 4
Cisco 1760 Modular Access Router Front Panel View

Table 4 Architecture and Physical Interfaces Support
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1 Virtual LAN 2 Data terminal equipment 3 Carrier Detect 4 Data set ready 5 Request to Send 6 Clear to Send |
Table 5 WAN Support for the Cisco 1760 Router
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1 Basic Rate Interface |
Table 6 Voice Support for the Cisco 1760 Router
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1 Ear and mouth 2 Foreign exchange office 3 Foreign exchange station 4 Direct-inward-dial 5 The Cisco 1760 can support four VIC-4FXS/DID cards with a maximum of eight port in DID mode |
Table 7 Cisco 1760 Router Memory—Defaults and Maximum
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VPN and Security
The Cisco 1760 router is part of the end-to-end Cisco VPN solution. VPNs create secure connections via the Internet to connect geographically dispersed offices, business partners, and remote users while providing security, traffic prioritization, management, and reliability equal to that of private networks.
By supporting industry standards IPSec, L2TP, and DES and 3DES, the Cisco 1760 router delivers robust VPN solutions to ensure data privacy, integrity, and authenticity.
The optional Cisco VPN Hardware Encryption Module for the Cisco 1760 router further optimizes VPN encryption performance. By offloading encryption tasks to the VPN module, the router processor is freed up to handle other operations. The VPN module accelerates the rate at which encryption occurs, speeding the process of transmitting secure data—a critical factor when using 3DES encryption.
The Cisco 1760 router offers integrated security features, including stateful inspection firewall functionality and IDS as an optional Cisco IOS Software feature. By deploying Cisco IOS Software firewall functionality, customers do not need to purchase or manage multiple devices, thus simplifying network management and reducing capital costs. Additionally, remote management applications, such as Cisco Security Device Manager (SDM), make it easier than ever to deploy and monitor VPN and Cisco IOS Firewall on your Cisco 1760 router.
Cisco IOS Software firewall security features include access control lists (ACLs) and user authentication, authorization, and accounting (such as PAP/CHAP, TACACS+, and RADIUS). These security features provide the optimal level of firewall protection to customers.
Voice Implementation
The Cisco 1760 Modular Access Router supports FXO, FXS, E&M, ISDN BRI VICs, and T1/E1 multiflex V/WICs.
The FXO interface allows an analog connection to the central office of the Public Switched Telephone Network (PSTN). The FXS interface connects basic telephone service phones (home phones), fax machines, key sets, and PBXs through ring voltage and dial tone. The E&M interface allows connection for PBX trunk lines (tie lines). The ISDN-BRI NT/TE VIC is used to connect to the PSTN or a PBX/KTS, whereas the T1/E1 multiflex V/WIC (multiflex V/WIC) supports both data and voice services.
The multiservice-ready Cisco 1760-V router version includes all the features needed for immediate integration of data and voice services:
VICs and WICs are available separately.
The Cisco 1760 and Cisco 1760-V routers have two DSP module slots on the motherboard, each of which supports a DSP module with up to five DSPs to allow additional voice-channel support. A maximum of ten DSPs are supported.
DSP Requirements
Cisco 1760 series routers support 3 types of DSP images: high complexity (HC), medium complexity (MC) and Flexi-6. HC and MC are used for analog1 VICs; Flexi-6 is used for T1/E1 VWICs2 and BRI VIC. MC is introduced in Cisco 1760 series starting from Cisco IOS 12.2(8)YN release, which will merge into 12.3(2)T. Therefore, please make sure to use Cisco 12.2(8) YN or later releases when using MC. In addition, starting from 12.2(8)YN release, the default DSP image for BRI VIC is changed from HC to Flexi-6. BRI VIC cannot be configured to HC or MC through CLI, however. If any DSP resources used for analog are left, BRI VIC can automatically take use of those resources by using HC or MC.Table 8 lists the default images for each type of VICs; Table 9 lists IOS support for each DSP image. Table 10 lists the number of channels supported by one DSP (PVDM-256K-4) for each codec type.
Please use the following rules for calculating DSP requirements on the Cisco 1760 series routers:
- a. Each 2-port analog VIC requires 1 DSP (PVDM-256K-4)
- b. Each VIC-2BRI-NT/TE requires 2 DSPs (PVDM-256K-8)
- c. For VWICs, refer to Table 10. For example, 12 G.711 digital T1/E1 voice calls require two DSPs; 12 G.729 calls require four DSPs
- d. Total DSP requirement is the sum of a, b and c. The DSP resources can not be shared between analog VICs and VWICs
2. For the Early Deployment (ED) releases: Cisco IOS 12.2(8)YN or later (Note: not include 12.2(11)YT) or 12.3T train releases or later, please always refer to the DSP Calculator in the following link:
http://www.cisco.com/pcgi-bin/Support/DSP/cisco_prodsel.pl
The DSP calculator optimizes the DSP resources for your configuration and suggests CLI configurations.
Table 8 DSP Firmware for each type of VICs
Table 9 Cisco IOS Support for DSP firmware
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1 It doesn't include Cisco 12.2(11)YT. 12.2(11)YT doesn't support MC. 2 It doesn't include Cisco 12.2(11)YT. 12.2(11)YT doesn't support Flexi-6. 3 It doesn't include Cisco 12.2(11)YT. 12.2(11)YT doesn't support Flexi-6. |
Table 10 The number of channels supported by one DSP (PVDM-256K-4) per codec type
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1 BRI VIC support in Flexi-6 starts from 12.2(8)YN or 12.3(2)T. 2 G.729 and G.729b is not supported in MC or Flexi-6 images |
Table 11 DSP Modules Available on Cisco 1760
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Cisco IOS Technology
The Cisco 1760 Modular Access Router benefits from the power of Cisco IOS Software. For example, through Cisco IOS Software, the Cisco 1760 router delivers QoS capabilities, including RSVP, WFQ, CAR, and DSCP Precedence.
These features enable businesses to prioritize traffic on their networks by user, application, traffic type, and other parameters to ensure that business-critical data and delay-sensitive voice are appropriately prioritized.
Further, for businesses that are increasingly accessing the Internet via DSL, QoS features are necessary to ensure highest voice quality. For DSL services with QoS features, the Cisco 1760 router can be deployed with the ADSL or the G.shdsl WAN Interface Card.
The advanced DSL QoS features include the following:
Cisco IOS Software Feature Sets
The Cisco 1760 router supports a choice of Cisco IOS Software feature sets with rich data features as well as a combined data and voice feature set. Tables 10 and 11 list these feature sets, including the memory requirements.
The Cisco 1760 router was first released on the Cisco IOS 12.2(2)XK release. The Cisco 1760 router will be supported on the 12.2T release in Q3 2002.
Table 13 Cisco 1760 Router Cisco IOS Data Software Feature Sets and Memory Requirements
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Table 14 Cisco 1760 Router Cisco IOS Data & Voice Software Feature Sets and Memory Requirements
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Cisco IOS IP base feature sets include NAT, OSPF, RADIUS, and Next Hop Resolution Protocol (NHRP).
Cisco IOS IP Plus feature sets contain L2TP, L2F, the Border Gateway Protocol (BGP), IP Multicast, Frame Relay switched virtual circuit (SVC), RSVP, the NetWare Link Services Protocol (NLSP), AppleTalk Simple Multicast Routing Protocol (SMRP), the Web Cache Control Protocol (WCCP), and the Network Timing Protocol (NTP).
Encryption is offered in special encryption feature sets (Plus IPSec 56, and Plus IPSec 3DES). The VPN encryption module requires a Cisco IOS IP Plus IPSec image.
DSL is supported in the base IP/DSL Cisco IOS image. In addition, the Cisco IOS IP Plus feature sets support DSL.
Network Management and Ease-of-Installation Tools
The Cisco 1760 router supports a range of network-management and ease-of-installation tools.
Cisco Security Device Manager (SDM) is an intuitive, web-based device management tool embedded within the Cisco IOS access routers. SDM simplifies router and security configuration through smart wizards to enable customers to quickly and easily deploy, configure and monitor a Cisco access router without requiring knowledge of Cisco IOS Command Line Interface (CLI). For more information visit http://www.Cisco.com/go/sdm .
Cisco ConfigMaker is a Microsoft Windows wizard-based tool designed to configure a small network of Cisco routers, switches, hubs, and other network devices from a single PC. This tool makes it easy to configure value-add security features such as the Cisco IOS Firewall feature set, IPSec encryption, Network Address Translation (NAT), the Dynamic-Host-Configuration-Protocol (DHCP) server, and to establish VPN policies (including QoS and security).
Cisco ConfigMaker 2.6 is supported on the Cisco 1760 Modular Access Router.
CiscoView, a member of the CiscoWorks2000 Family, is a Web-based device-management application that provides dynamic status, monitoring, and configuration information for the broad range of Cisco internetworking products. CiscoView displays a physical view of a device chassis, with color-coding of modules and ports for at-a-glance status. Monitoring capabilities display performance and other statistics. Configuration capabilities allow comprehensive changes to devices, given that requisite security privileges are granted.
- Real-time monitoring of key information that relates to device performance, traffic, and usage, with metrics such as utilization percentage, frames transmitted and received, errors, and a variety of other device-specific indicators
- The ability to change device configurations such as IP route, VLAN, and duplex settings
- On-demand access to Cisco.com, Cisco's Web site, for new and updated device support
- A Web-based application that allows multiuser access to a single CiscoView server
CiscoView is supported on the Cisco 1760 router.
CiscoWorks 2000 Resource Manager Essentials, a member of the CiscoWorks2000 family of network management products, is a powerful suite of Web-based applications offering network management solutions for Cisco switches, access servers, and routers. The Resource Manager Essentials browser interface allows easy access to information critical to network uptime and simplifies time-consuming administrative tasks. The Management Connection feature in Resource Manager Essentials adds Web-level integration of other management tools from Cisco and partner companies, thereby enabling utilization of these tools and applications to create a seamless, central point of network administration. Comprising six applications and optional add-on packages such as CiscoWorks for Switched Internetworks Campus, Resource Manager Essentials includes:
CiscoWorks2000 Resource Manager Essentials version 3.3 is supported on the Cisco 1760 router.
Device Fault Manager (DFM) provides real-time fault analysis for devices and alerts network managers of critical conditions within the network. DFM provides:
Device Fault Manager support on the Cisco 1760 router is targeted for Q3CY2002.
Service and Support
Technical Support Services
Technical Support Services for the Cisco 1760 router are available through Cisco SMARTnet and SMARTnet Onsite service programs. Cisco SMARTnet support augments the resources of your operations staff; it provides them access to a wealth of expertise, both on line and via telephone, the ability to refresh their system software at will, and a range of hardware Advance Replacement options. Table 12 details the features and benefits of Cisco SMARTnet offerings.
Cisco SMARTnet Onsite provides all SMARTnet services and complements the hardware Advance-Replacement feature by adding the services of a field engineer, offering support that can be critical for those locations where staffing is insufficient or unavailable to perform parts-replacement activities.
Technical Support Services Delivery
Cisco SMARTnet support is available to customers from both Cisco directly and through Cisco's channel partners. Partners purchasing directly from Cisco may offer Cisco Branded Resale of Cisco SMARTnet Software. Partners purchasing through distribution may offer Packaged Cisco SMARTnet Software.
For partners supporting the Cisco 1760 router with their own service and support infrastructure, Cisco System Integrator Support 98 (SIS98) is available.
Contact your Cisco account manager for appropriate delivery options.
Technical Specifications
Dimensions
Power
The Cisco 1760 router has one universal internal power supply (applicable to all countries) and no external power brick. It has no locking connector on the power cord.
Environmental
Regulatory Approvals (Safety, EMC, and Telecom Compliance)
Safety
EMC
b) EN61000-4-3 Radiated immunity
c) EN61000-4-4 Electrical fast transients
e) EN61000-4-6 Conducted RF immunity
f) EN61000-4-11 AC dips and sags
g) EN61000-3-2 AC harmonics and flicker
Telecom
- Europe: CTR2, CTR3, TBR21
- Canada: CS-03 Part I, II, VI, VIII
- United States: TIA-IS-968
- Japan: JATE
- Australia/New Zealand: TS002, TS003, TS006, S.043, TS031
- Brazil: Anatel
- China: GB-514-92, YD-514-92; Hong Kong: HKTA 2011, 2014, 2015, 2017
- Hungary ETR328 (T)
- Mexico: CFT
- Singapore: IDA
- Poland PB-TE rev. 2 (T)
- South Africa: ICASA
- South Korea: MIC
Product Numbers and Descriptions
For ordering information, Table 13 lists the product part numbers with the respective part descriptions for the two versions, Cisco 1760 and Cisco 1760-V routers, the memory options, the DSP modules, the VPN module and bundled offerings.
This is not a comprehensive list. For further information, please contact your Cisco account manager or your local sales office.
Table 16 Cisco 1760 Router Product Numbers and Descriptions
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1 Analog VICs include VIC-2FXS, VIC-2FXO, VIC-2FXO-M1, VIC-2FXO-M2, VIC-2FXO-M3, VIC-2FXO-EU, VIC-2E/M, VIC-2DID,VIC-4FXS/DID
2 T1/E1 VWICs include VWIC-1MFT-T1, VWIC-2MFT-T1, VWIC-2MFT-T1-DI, VWIC-1MFT-E1, VWIC-2MFT-E1, VWIC-2MFT-E1-DI, VWIC-1MFT-G703, VWIC-2MFT-G703