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HWIC-4SHDSL
4-pair G.shdsl HWIC with IMA support Cisco Router High-Speed...
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HWIC-4SHDSL is a high-speed WAN module that delivers four integrated DSL interfaces designed for digital subscriber line connectivity. It features dedicated RJ‑11 connectors, supports DSL protocols operating at data rates up to 2.3Mbps symmetrical, and is engineered for seamless integration with Cisco routers and similar network infrastructures.
This compact HWIC module is optimized for remote site connectivity and network edge applications, ensuring reliable TCP/IP based communications over DSL lines. With a modular form factor for easy installation in the dedicated HWIC slots, it provides an efficient solution for expanding high-speed WAN access in enterprise and service provider environments.
HWIC-4SHDSL price is $505.00, a 51.9% saving from the Cisco list price of $1,050.00. HWIC-4SHDSL is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for HWIC-4SHDSL for additional pricing. Browse the full Router Ehwic Wan Cards series or explore all Cisco products.
A nationwide retail chain deploys Cisco ISR routers equipped with the HWIC-4SHDSL-4-pair G.shdsl HWIC with IMA support to aggregate four SHDSL lines at each of 50 branch outlets. By bonding individual 4 Mbps pairs into a single 16 Mbps symmetric WAN link, the solution delivers unified management, automatic load-balancing and active-standby redundancy. Outcome: 99.99% branch uptime, a 30% drop in monthly bandwidth charges and simplified end-to-end network operations.
A financial services firm relies on Metro Ethernet for primary connectivity but needs rapid failover in case of outages. By installing the HWIC-4SHDSL-4-pair G.shdsl HWIC with IMA support in its Cisco routers, four independent SHDSL loops are bonded into a resilient 20 Mbps backup path. Benefit: sub-50 ms switchover, guaranteed SLA compliance and elimination of costly temporary fibre rentals during network maintenance windows.
An oil and gas operator connects 30 remote pump stations using Cisco routers fitted with the HWIC-4SHDSL-4-pair G.shdsl HWIC with IMA support. Aggregating four SHDSL links provides a 12 Mbps encrypted channel for real-time SCADA telemetry and VoIP voice monitoring. Benefit: deterministic symmetric bandwidth with AES VPN encryption, 40% lower TCO versus satellite backup and rapid deployment even in areas lacking fiber infrastructure.
To get the detailed certification, please go to the Compliance Center.
| HWIC-4SHDSL |  HWIC-3G-HSPA |  HWIC-4ESW-POE |  EHWIC-4G-LTE-BE |  EHWIC-D-8ESG | |
|---|---|---|---|---|---|
| Product Type | WAN Module | Network Module / Network Card | Network Module | Wireless WAN Module | Network Module / Network Card |
| Module Type | DSL | WAN | Ethernet | 4G LTE | Ethernet |
| Data Rate | 2.3Mbps (symmetrical) | N/A | 10/100 Mbps | Up to 100Mbps | 1Gbps |
| Connector Type | RJ-11 | N/A | RJ-45 | SMA | RJ-45 |
| Supported Protocols | TCP/IP | TCP/IP | TCP/IP | TCP/IP | TCP/IP |
| Form Factor | HWIC | Modular | HWIC | Modular (EHWIC) | Modular |
| Operating Temperature | 0 to 70°C | 0 to 55°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | N/A | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | N/A | 3.3V | 3.3V |
| Compatibility | Cisco | Cisco | Cisco | Cisco ISR Routers | Cisco |
| Max Speed | 2.3Mbps | N/A | 100Mbps | 100Mbps | 1Gbps |
| Supported Features | Auto-negotiation | N/A | PoE, VLAN, QoS | Auto-negotiation, QoS, Failover | Auto-negotiation, Jumbo Frames, QoS |
| Power Consumption | N/A | N/A | N/A | N/A | N/A |
| Interface Ports | N/A | N/A | Ethernet | SMA Antenna Connectors | Ethernet |
| Expansion Slots | HWIC | EHWIC | HWIC | EHWIC | EHWIC |
| Product Name | HWIC-4SHDSL | HWIC-3G-HSPA | HWIC-4ESW-POE | EHWIC-4G-LTE-BE | EHWIC-D-8ESG |
| Height | N/A | N/A | N/A | N/A | N/A |
| Width | N/A | N/A | N/A | N/A | N/A |
| Depth | N/A | N/A | N/A | N/A | N/A |
| Weight | N/A | N/A | N/A | N/A | N/A |
The HWIC-4SHDSL offers reliable high-speed DSL connectivity. It's easy to install and has been perfect for our network expansion.
We use the HWIC-4SHDSL for fast and stable internet connections. It has been a reliable addition to our Cisco setup.
The HWIC-4SHDSL delivers excellent performance. It's easy to deploy and provides stable connectivity across our network.
This card provides reliable DSL service. The HWIC-4SHDSL is a great solution for businesses looking to enhance their connectivity.
The HWIC-4SHDSL is a reliable DSL solution. It delivers fast and consistent connectivity, improving the performance of our network.
The Cisco HWIC-4SHDSL is a 4-pair G.shdsl High-Speed WAN Interface Card for Cisco ISR routers, delivering symmetrical data rates up to 15.3 Mbps per pair.
Key features include four G.shdsl pairs, up to 61.2 Mbps aggregate throughput, Inverse Multiplexing for ATM (IMA) support, and an RJ-21 interface for multi-pair connectivity.
The HWIC-4SHDSL is supported on Cisco ISR G2 series routers, including models 1841, 2801, 2811, 2821, 2851, 2911, 2921, 2951, and later platforms with HWIC slots.
G.shdsl is a symmetrical DSL standard that uses advanced single-line modulation over copper pairs to deliver equal upstream and downstream rates up to 15.3 Mbps.
Each G.shdsl pair supports from 192 kbps to 15.3 Mbps; all four pairs can be combined via IMA for up to 61.2 Mbps aggregate bandwidth.
IMA (Inverse Multiplexing for ATM) aggregates multiple G.shdsl channels into a single logical link, boosting bandwidth and providing load-balanced redundancy across four pairs.
Power down the router, insert the HWIC-4SHDSL into an available HWIC slot, secure with the captive screws, reconnect power, then attach the RJ-21 cable and verify with Cisco IOS commands.
Use a DB-78 to RJ-21 or RJ-11 multi-pair cable with 24 AWG or better solid copper conductors; maximum recommended distance per pair is up to 5 km, depending on line quality.
Enter interface configuration mode for the HWIC slot, set ‘encapsulation shdsl’, define the desired line rate with ‘shdsl rate’, enable IMA with ‘shdsl ima group’, and apply your IP or routed protocol settings.
Maximum reach is approximately 5.5 km (18,000 ft) per pair at lower data rates, with distance decreasing as line rate increases.
Use ‘show controllers shdsl detail’, verify signal-to-noise ratio and CRC counters, perform local loopback tests, and check physical cable continuity and pin assignments.
The module requires Cisco IOS 12.4(20)T or later with the SHDSL feature set; later 15.x releases also provide full support and enhanced monitoring MIBs.
The module draws up to 3.5 W from the router’s HWIC slot at 3.3 V and is designed to operate within standard Cisco ISR G2 power specifications.
Yes; you can deploy redundant routers running HSRP or VRRP with IMA channel groups mirrored across devices for sub-second failover.
The HWIC-4SHDSL is available through authorized Cisco resellers and distributors; it includes a one-year limited hardware warranty, extendable with Cisco SMARTnet support.
Monitor performance locally via ‘show controllers shdsl’ and remotely using SNMP with the CISCO-IF-EXT-MIB for line statistics, error rates, and bandwidth utilization.
Yes; with IMA it supports 1+1 protection switching, ensuring continuous operation by automatically rerouting traffic if a G.shdsl channel fails.