Cisco 1760 Full Product Description

1. Short Overview

Suffix Breakdown

• 1760: Rack-mount multiservice modular router in the 1700 lineup
• -V: Voice preloaded variant with factory-installed PVDM DSP modules for native voice compression and conferencing

Core Differentiators vs Cisco 1751

1. 19-inch rack-mount chassis with built-in internal AC power supply (1751 uses external DC wall adapter, fanless desktop only)Cisco
2. Four front modular slots: 2 WIC + 2 dedicated VIC slots (1751 has only 3 mixed WIC/VIC slots)
3. Dual independent PVDM DSP expansion slots (1751 has one single DSP slot, lower voice conference capacity)
4. Higher maximum voice conference capacity: up to 20 conference calls vs 5 on the 1751Cisco
5. Larger maximum Flash memory: up to 64MB vs 16MB on the 1751
6. Higher voice transcoding session limit (20 vs 16) and higher total concurrent VoIP call capacity
7. Front-facing modular slots (1751 slots are rear-mounted) for easier rack installation maintenanceCisco

2. Hardware Interface & Performance Specifications

Modular Expansion Architecture (4 Front Slots + Internal Daughtercard Slots)

1. 2 × WIC (WAN Interface Card) Slots: Cross-compatible with Cisco 1600, 2600, 3600 Series WICs for flexible broadband/leased-line WAN:
   • ISDN BRI, T1/FT1/E1 integrated DSU/CSU, synchronous/asynchronous serial
   • ADSL / G.SHDSL / G.FAST DSL WICs, 4-port Ethernet switch WIC (WIC-4ESW)
2. 2 × VIC (Voice Interface Card) Slots: Dedicated analog/digital telephony expansion for PBX, PSTN, and station lines:
   • VIC-2FXS / VIC-4FXS for analog desk phones, intercoms
   • VIC-2FXO / VIC-2E/M for PSTN trunk lines and PBX tie-lines
   • VIC-2BRI-NT/TE for ISDN voice trunks
3. 2 × Internal PVDM DSP Slots: Accept Packet Voice DSP Modules for voice compression, T.38 fax relay, echo cancellation, and voice conferencing. The C1760-V ships with factory PVDM DSPs.
4. 1 × Internal MOD1700-VPN crypto accelerator slot: Hardware-offloaded IPsec DES/3DES encryption to eliminate CPU overhead for multi-site VPN tunnels

Fixed Built-in Ports (Rear Panel)

1. 1 × 10/100BASE-TX autosensing Fast Ethernet LAN (RJ45): Auto 10/100 Mbps full/half duplex, fully supports IEEE 802.1Q VLAN trunking and inter-VLAN routing for multi-segment office LANs
2. RJ45 Console port (blue): Local out-of-band CLI management, up to 115.2 kbps baud rate
3. RJ45 AUX port (black): Remote out-of-band management via external analog PSTN modem, asynchronous up to 115.2 kbps
4. Power switch, internal AC power inlet (100–240V AC, no external adapter required)
5. Kensington security lock slot for physical rack chassis anti-theft protection

Memory & Performance Benchmarks

• Base C1760 default DRAM: 32MB; max expandable DRAM: 96MB
• C1760-V default DRAM: 64MB; max expandable DRAM: 96MB
• Base C1760 default Flash: 16MB; max supported Flash: 64MB
• C1760-V default Flash: 32MB; max supported Flash: 64MB
• Processor: Motorola MPC860P PowerQUICC 80MHz internal RISC core
• IP forwarding throughput: Up to 12,000 packets per second (pps), optimized for mixed voice/data multiservice loads
• Maximum concurrent IPsec site-to-site VPN tunnels: Up to 100 (depends on IOS feature set and crypto module)
• Voice capacity: Up to 32 concurrent VoIP calls with full PVDM DSP expansion; up to 20 voice conference bridges, 20 transcoding sessions
• Supported IOS releases: Cisco IOS 12.2 XM / 12.4T multiservice maintenance trains (last official firmware branches)

Physical & Power Parameters

• Form factor: 1U 19-inch rack-mount metal chassis (no separate rack brackets needed)
• Internal integrated universal AC power supply (100–240V 50/60Hz input)
• Front panel LEDs: System power, slot status for all four modular bays, Fast Ethernet link/activity, crypto module health, DSP voice status
• Operating environment: Dry indoor central wiring closet use only; operating temperature 0°C to +40°C, non-condensing relative humidity 10–85% RH
• No native PoE power output; all IP cameras, wireless APs, and PoE endpoints require external PoE injectors

3. Cisco IOS Multiservice Software Feature Suite

Routing & WAN Connectivity

• IPv4 core routing protocols: Static routes, RIP v1/v2, OSPF, EIGRP, BGP (IP Plus feature set)
• WAN encapsulations: PPP, HDLC, Frame Relay, ISDN, PPPoE for DSL, Dial-on-Demand Routing (DDR) for redundant backup links
• HSRP for router failover redundancy; NHRP for DMVPN hub-spoke multi-site VPN architectures
• Network Address Translation (NAT): Static NAT, dynamic NAT, PAT overloading for multi-user Internet access
• IEEE 802.1Q VLAN trunking and inter-VLAN routing for segmented internal office subnets

Multiservice Voice & Fax (Key Differentiator vs Data-Only Routers)

1. VoIP call control: H.323, SIP, MGCP, RSVP bandwidth reservation for voice QoS
2. Analog telephony integration via VIC cards: Connect PBX trunk lines, analog desk phones, and fax machines
3. Fax support: T.38 real-time fax relay over IP, fax passthrough, store-and-forward fax
4. Voice compression codecs: G.711, G.729a, G.726 with hardware DSP acceleration to minimize WAN bandwidth consumption
5. Call routing, multi-site dial plans, voice hunt groups, and toll bypass to reduce long-distance PSTN telephony costs

QoS & Bandwidth Management

• Base QoS: Weighted Fair Queuing (WFQ), traffic shaping
• Advanced QoS (IP Plus): Low Latency Queuing (LLQ), Frame Relay Traffic Shaping (FRTS), WRED, DiffServ DSCP marking, Link Fragmentation and Interleaving (LFI) to eliminate voice jitter over low-speed WAN links
• cRTP header compression to reduce VoIP packet overhead on DSL/ISDN circuits

Integrated Enterprise Security Suite

1. IOS Context-Based Access Control (CBAC) stateful firewall: Dynamic deep packet inspection, application-layer filtering for HTTP, FTP, SIP, H.323
2. Optional IOS signature-based IDS for real-time intrusion threat detection and mitigation
3. Full VPN stack:
   • Hardware-accelerated IPsec (DES / 3DES) site-to-site branch tunnels (with MOD1700-VPN module)
   • L2TP, L2F remote worker user VPN
   • Cisco Easy VPN Remote: Centralized security policy pull from headquarters VPN headends to simplify remote branch provisioning
4. AAA authentication framework: PAP/CHAP, RADIUS, TACACS+ for user access audit and centralized control
5. Standard/extended ACLs for granular traffic filtering and access restriction

Management & Operations

• CLI command-line management via Console/AUX out-of-band ports
• SNMP v1/v2c for network monitoring, RMON traffic statistics collection
• Cisco ConfigMaker graphical configuration tool for simplified zero-touch deployment
• AutoInstall: Automated remote configuration download over WAN links
• Dual Flash bank storage for primary and backup IOS image disaster recovery
• Syslog event logging, NTP time synchronization for consistent audit log timestamps

4. Typical Deployment Scenarios

1. Medium multi-line retail flagship rack-mounted edge router: Dual T1 WIC redundant primary/secondary leased-line WAN, ISDN BRI WIC dial backup, four VIC ports for multi-floor analog phones and fax machines, 802.1Q VLAN segmentation to isolate POS payment terminals from employee Wi-Fi LAN, IPsec site-to-site VPN to corporate HQ, integrated firewall for PCI DSS compliance security
2. Regional medium enterprise multiservice rack router: ADSL WIC broadband primary access, dual PVDM DSP modules for 24 concurrent VoIP office calls, hardware VPN accelerator for dozens of concurrent site-to-site tunnels, multi-VLAN routing for separate finance, HR, engineering, and guest office subnets
3. Global ISDN DSL carrier central CPE: G.SHDSL Annex B/J WIC copper access, multiple VIC-2FXO trunk connections to local PBX systems, NAT for multi-user Internet sharing, CBAC stateful firewall protection against external Internet threats
4. Multi-building campus central voice/data aggregation router: Four VIC slots for building intercoms and emergency site phones, dual combo fiber WAN primary/secondary backhaul to campus core network, USB LTE dongle for emergency wireless backup during simultaneous dual fiber and DSL outages

5. Standard Package Contents of C1760 / C1760-V

Separately Sold Optional Accessories

• WAN Interface Cards (WIC-1B-S/T, WIC-T1-DSU, WIC-ADSL, WIC-2SERIAL, WIC-4ESW, etc.)
• Voice Interface Cards (VIC-2FXS, VIC-4FXS, VIC-2FXO, VIC-2E/M, VIC-2BRI-NT/TE)
• PVDM DSP voice compression modules (standard for C1760-V, optional for base C1760)
• MOD1700-VPN hardware IPsec encryption accelerator module
• CAT5e/CAT6 Ethernet patch cords
• RJ11 DSL/ISDN telephone line cables
• CAT4/CAT6 USB LTE cellular dongles for secondary auxiliary wireless backup WAN
• USB flash storage drives for offline configuration backups
• External PoE injectors for IP cameras and wireless access points

Software Licensing Information

Short Commercial Catalog Summary